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Journal articles on the topic 'Hydrazine carboxylic acid'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Wu, Shouting, Xi Liang, Fang Luo, et al. "Synthesis, Crystal Structure and Bioactivity of Phenazine-1-carboxylic Acylhydrazone Derivatives." Molecules 26, no. 17 (2021): 5320. http://dx.doi.org/10.3390/molecules26175320.

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A phenazine-1-carboxylic acid intermediate was synthesized from the reaction of aniline and 2-bromo-3-nitro-benzoic acid. It was then esterified and reacted with hydrazine hydrate to afford phenazine-1-carboxylic hydrazine. Finally, 10 new hydrazone compounds 3a–3j were obtained by the condensation reaction of phenazine-1-carboxylic acid hydrazide and the respective aldehyde-containing compound. The structures were characterized by 1H and 13C NMR spectroscopy, MS and single crystal X-ray diffraction. The antitumor activity of the target compounds in vitro (HeLa and A549) was determined by thia

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2

Elshaarawy, Reda F. M., and Christoph Janiak. "2-Thiophenecarbohydrazides: A Novel Efficient Method for the Synthesis of 2-Thiophenecarbohydrazide." Zeitschrift für Naturforschung B 66, no. 12 (2011): 1202–8. http://dx.doi.org/10.1515/znb-2011-1202.

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Hydrazinolysis of carboxylic acid esters in alcoholic solutions is the standard method for preparing carbohydrazides (carboxylic hydrazides). Here we report an efficient process, involving the reaction of activated esters or amides with hydrazine, for the preparation of thiophenecarbohydrazides in yields larger than 90% and high purity. With this new method, a series of heteroaryl-, aryl-, or aralkyl- substituted carbohydrazides were synthesized and characterized. The X-ray crystal structure of 2-thiophenecarbohydrazide (thiophene-2-carboxylic hydrazide, 2-thenoyl-hydrazine) has revealed that

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3

Hamada, Nagwa M. M., Sohila H. Mancy, and Mohamed A. El Sekily. "A Facile Synthesis, Spectroscopic Identification, and Antimicrobial Activities of Some New Heterocyclic Derivatives from D-erythro-2,3-hexodiuloso-1,4-lactone-2-(o-chlorophenyl hydrazone)-3-oxime." International Journal of Chemistry 16, no. 2 (2024): 62. http://dx.doi.org/10.5539/ijc.v16n2p62.

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A new series of different heterocyclic derivatives was prepared via a facile unimolecular condensation of D-iso ascorbic acid with o-chlorophenyl hydrazine to give D-erythro-2,3-hexodiulosono-1,4-lactone 2-( o-chlorophenyl hydrazine (2). Reactions of&nbsp;(2)&nbsp;with hydroxylamine gave the 2-( o-chlorophenyl hydrazone)-3-oxime (3). On boiling with boiling acetyl chloride,&nbsp;(3)&nbsp;gave 2-o-chlorophenyl-4-(2,3-di-O-acetyl-D-erythro-glyceryl-1-yl)-1,2,3-triazole-5-carboxylic acid-5,1́-lactone (4). In the treatment of (3) with benzoyl chloride in pyridine the same dehydrati

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4

Hamada, Nagwa M. M., Sohila H. Mancy, and Mohamed A. El Sekily. "A Facile Synthesis, Spectroscopic Identification, and Antimicrobial Activities of Some New Heterocyclic Derivatives from D-erythro-2,3-hexodiuloso-1,4-lactone-2-(o-chlorophenyl hydrazone)-3-oxime." International Journal of Chemistry 17, no. 2 (2025): 50. https://doi.org/10.5539/ijc.v17n2p50.

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A new series of different heterocyclic derivatives was prepared via a facile unimolecular condensation of D-iso ascorbic acid with o-chlorophenyl hydrazine to give D-erythro-2,3-hexodiulosono-1,4-lactone 2-( o-chlorophenyl hydrazine (2). Reactions of&nbsp;(2)&nbsp;with hydroxylamine gave the 2-( o-chlorophenyl hydrazone)-3-oxime (3). On boiling with boiling acetyl chloride,&nbsp;(3)&nbsp;gave 2-o-chlorophenyl-4-(2,3-di-O-acetyl-D-erythro-glyceryl-1-yl)-1,2,3-triazole-5-carboxylic acid-5,1́-lactone (4). In the treatment of (3) with benzoyl chloride in pyridine the same dehydrati

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5

Gera, Ankur, Chander Mohan, and Sandeep Arora. "Synthesis of Phthaloylglycyl Hydrazide Derivatives: Selective Protection of Phthalimide Group from Hydrazinolysis." Current Organic Synthesis 15, no. 6 (2018): 839–45. http://dx.doi.org/10.2174/1570179415666180601083256.

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Background: N-phthalimide amino acid hydrazide is a class of compounds that have the potential therapeutic use. In general, hydrazinolysis of N-substituted amino acid(s) ester removes the ester group and yields the corresponding hydrazide. However, in case if N-substitution group is phthalimide, phthalimide group is cleaved and not the ester group. The resulted compound, therefore, is amino acid ester rather than Nphthalimide amino acid hydrazide. The above class of compounds, because of susceptibility of phthalimide group to hydrazinolysis, has previously been synthesized by a lengthy three-s

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6

Rai, K. M. Lokanatha, K. B. Umesha, and M. A. Harish Nayaka. "Antioxidant and Antimicrobial Activity of 5-methyl-2-(5-methyl-1,3-diphenyl-1H-pyrazole-4-carbonyl)-2,4-dihydro-pyrazol-3-one." International Journal of Biomedical Science 5, no. 4 (2009): 359–68. http://dx.doi.org/10.59566/ijbs.2009.5359.

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Cycloaddition of nitrile imines 4 generated in situ by the catalytic dehydrogenation of diphenyl hydrazones 3 using Chloramine-T (CAT) as oxidant in glacial acetic acid with enolic form of ethyl acetoacetate 5 afforded Ethyl 3-aryl-5-methyl-1-phenyl-1H-pyrazol-4-carboxylate 6 in 80% yield. The said pyrazoles 6 refluxed with 80% hydrazine hydrate using absolute alcohol as solvent for about 2-3 hours to produce the respective 5-methyl-1,3-diphenyl-1H-pyrazole-4-carboxylic acid hydrazide 7. The alcoholic solution of pyrazole acid hydrazides on heating with ethyl acetoacetate 5 to give the 5-methy

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7

Journal, Baghdad Science. "Synthesis of New Heterocyclic Derivatives from 4-(3, 5-Dimethyl-1-phenyl-1H-pyrazol-4-ylazo)- benzoic acid." Baghdad Science Journal 7, no. 1 (2010): 727–36. http://dx.doi.org/10.21123/bsj.7.1.727-736.

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In this work pyrazolin derivatives were prepared from the diazonium chloride salt of 4-aminobenzoic acid. Azo compounds were prepared from the reaction of an ethanolic solution of sodium acetate and calculated amount of active methylene compound namely, acetyl acetone to obtain the corresponding hydrazono derivative (1). Cyclocondensation reaction of compounds (1) with hydrazine hydrate and phenyl hydrazine in boiling ethanol affording the corresponding pyrazoline-5-one derivatives of 4-aminobenzoic acid (2,3). Then compound (3) was reacted with thionyl chloride to give the corresponding acid

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8

M.A., EI-Sekily, E. Elba M., and S. Fouad F. "Some heterocycles from dehydro-L-ascorbic acid and dehydro-D-isoascorbic acid." Journal of Indian Chemical Society Vol. 77, Mar 2000 (2000): 168–71. https://doi.org/10.5281/zenodo.5867557.

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Department of Chemistry, Faculty of Science, Alexandria, Egypt Department of Physics and Chemistry, Faculty of Education, Damanhour, Alexandria University, Egypt <em>Manuscript received 5 January 1999, revised 7 September 1999, accepted 13 September 1999</em> Reaction of D-<em>erythro</em>-2,3-hexodiulosono-1,4-lactone-2-phenylhydrazone 1 with <em>p</em>-sulfamylphenylhydrazine gives the 3-<em>p</em>sulfamylphenylhydrazone 2, which upon treatment with hydrazine hydrate or CuCl<sub>2</sub> affords pyrazolinedione 4 or 3,6-anhydro derivative 6, respectively. Condensation of the aldehyde 8 w

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9

Sarma, K. Narasimha, M. C. S. Subha, and K. Chowdoji Rao. "A Facial Synthesis and Antimicrobial Activity of Some Pyrazole Derivatives Carrying Indole." E-Journal of Chemistry 7, no. 3 (2010): 745–50. http://dx.doi.org/10.1155/2010/979401.

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The title compounds (7a-h) were prepared by esterification of indole-5-carboxylic acid (1) and subsequent treatment with hydrazine hydrate in methanolviathe hydrazide (3). Finally hydrazide (3) condensed with different substituted aldol (6) in acetic acid / PTSA catalytic media produced (3,5-subsituted-4,5-dihydropyrazol-1-yl)(1H-indol-5-yl)methanone (7a-h) in good yields. All the newly synthesized compounds are by elemental analysis and spectral studies and evaluated for antimicrobial activities.

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10

Martin, Alex. "Synthesis, Characterization and Screening of Anti-tubercular activity of 2, 5-Disubstituted-1, 3, 4-Oxadiazole." Indian Journal of Pharmaceutical and Biological Research 1, no. 03 (2013): 12–19. http://dx.doi.org/10.30750/ijpbr.1.3.3.

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The synthesis of 2-furyl-5-(substituted)-1,3,4-oxadiazoles was carried out by microwave irradiation of 2-furoic acid and ethanol followed by subsequent hydrazinolysis with hydrazine hydrate. Finally furan-2-acid hydrazide was treated with appropriate carboxylic acid in the presence of phosphorous oxychloride to produce title compounds. The structures of the newly synthesized compounds were established on the basis of spectral analysis such as IR, H1NMR and Mass spectral data. The synthesized compounds were screened for their anti-tubercular activity.

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11

Maysoon T. Tawfiq. "Chem.Dept./ College of Education Ibn-Al-Haithem University of Baghdad." journal of the college of basic education 21, no. 87 (2022): 21–49. http://dx.doi.org/10.35950/cbej.v21i87.8849.

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This work includes synthesis a series of some new derivatives of triazine from reaction between the sulfur amino acid (L-cysteine) and different aldehydes in dry ethanol to obtain thiazolidine ring as diastereo isomers (Cis and Trans)- 2- alkylthiazolidine-4- carboxylic acids (1). The thiazolidine derivatives (1) suffered esterfication reaction of carboxylic acid in presence of drops of concentrated sulfuric acid as a catalyst to give the esters : ethyl 2- alkylthiazolidine -4 - carboxylates (2), which reacted with hydrazine hydrate in (addition- elimination) reaction to give acid

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12

Hřebabecký, Hubert, and Antonín Holý. "Preparation of Thymidine-4'-C-carboxylic Acid and Its Derivatives." Collection of Czechoslovak Chemical Communications 62, no. 7 (1997): 1128–35. http://dx.doi.org/10.1135/cccc19971128.

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3',5'-Di-O-benzoyl-4'-C-hydroxymethylthymidine (3) was prepared in four steps from 3'-O-(tert-butyldimethylsilyl)-4'-C-hydroxymethylthymidine (1). Oxidation of 3 with pyridinium dichromate afforded 3',5'-di-O-benzoylthymidine-4'-C-carboxylic acid (4) which on debenzoylation gave free thymidine-4'-C-carboxylic acid, (3R,2S,5R)-3-hydroxy-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)tetrahydrofuran-2-carboxylic acid, (5). Esterification of acid 5 with diazomethane afforded the methyl ester 6. Its isopropyl ester 7 was obtained by transesterification of the methyl ester 6

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13

Wasfy, Ashraf A. F., Mohamed M. H. Arief, Mahassen S. Amine, Shafey G. Donia та Aly A. Aly. "γ-Oxo Carboxylic Acids in Heterocyclic Synthesis, III. Synthesis of Biologically Active 4-Benzylamino-6-(5,5-dioxodibenzothiophen- 2-yl)-2,3,4,5-tetrahydropyridazin-3-ones". Zeitschrift für Naturforschung B 57, № 6 (2002): 668–76. http://dx.doi.org/10.1515/znb-2002-0613.

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α-Benzylamino-β-(5,5-dioxodibenzothiophen-2-carbonyl)propionic acid (1) has been synthesized by treating the corresponding β-aroylacrylic acid with benzylamine in dry benzene. On treatment with hydrazine hydrate the keto acid 1 furnishes the corresponding pyridazinone derivative 2. The behaviour of 2 towards carbon electrophiles, namely, ethyl chloroacetate, acrylonitrile, formaldehyde and secondary amines (under Mannich reaction conditions), aromatic aldehydes and carbon nucleophiles, namely, POCl3/PCl3 and P2S5 has been investigated. The 3-chloropyridazine derivative 13 reacts with hydrazine

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14

Ekram Abdullah Basheer, Kalid Matny Al-jaanaby, and Feras Shauki Al-joboury. "Synthesis a Number of Heterocyclic Compounds and some of chalcones Derived From Levofloxacin." Tikrit Journal of Pure Science 20, no. 5 (2023): 72–83. http://dx.doi.org/10.25130/tjps.v20i5.1243.

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The hydrazide (1) was used as synthone for the following Compound pyridazine-3,6-dione (2) by reaction of hydrazide (1) with maleic anhydride and Compound phthalazine-1,4-dione (3) by the reaction of hydrazide (1) with phthalic anhydride. Substituted thiosemicarbazides (6-7) by hydrazide(1) reaction with substituted isothiocyanates in ethanol. The thiosemicarbazide (5) was, also synthesized by the reaction of hydrazide (1) with ammonium thiocyanate in presence of concentrated hydrochloric acid. 1-Formyl-2-acyl hydrazine (4) was obtained by the reaction hydrazide (1) with formic acid, and Subst

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15

Stepanova, Elena V., and Andrei I. Stepanov. "UNUSUAL WAY OF REACTION OF 3-AMINO-4-(5-CHLOROMETHYL-1,2,4-OXADIAZOLE-3-YL)-FURAZAN WITH HYDRAZINE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 4 (2017): 26. http://dx.doi.org/10.6060/tcct.2017604.5522.

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The results of our study of the pathways of selective reactivity of 3-amino-4-(5-chloromethyl-1,2,4-oxadiazole-3-yl)furazan versus 5-unsubstituted or 5-methyl and 5-trifluoromethyl substituted 4-(5R-1,2,4-oxadiazole-3-yl)furazans (R = H, Me, CF3) towards the action of hydrazine are discussed. If the reductive opening of 1,2,4-oxadiazole ring in unsubstituted at the С-5 atom (1,2,4-oxadiazol-3-yl)furazan derivatives under the treatment with hydrazine can be used as a method for the preparation of a range of amidrazones of 4-R-furazan-3-carboxylic acid. 3-amino-4-(5-trifluoromethyl-1,2,4-oxadiaz

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16

Kantlehner, Willi, Jochen Mezger, Rüdiger Stieglitz, et al. "Orthoamide, LXV [1]. Kondensationsreaktionen von Amidinen, Guanidinen, Hydrazin und Hydrazin-Derivaten mit Orthoamiden von Alkincarbonsäuren / Orthoamides,LXV [1]. Condensation Reactions of Amidines, Guanidines, Hydrazine and Hydrazine Derivatives with Orthoamides of Alkyne Carboxylic Acids." Zeitschrift für Naturforschung B 62, no. 8 (2007): 1015–29. http://dx.doi.org/10.1515/znb-2007-0804.

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The orthoamide derivatives 4 react with amidines 10 and guanidines 11 to give 4-dimethylaminopyrimidines 12. The 3-dimethylamino-pyrazoles 13a - c can be prepared from orthoamides 4 and hydrazine. The hydrazine derivative 14, whose constitution was established by crystal structure analysis, is obtained in low yield when hydrazine is added dropwise to a boiling solution of 4d in THF.Methyl- and phenylhydrazine, undergo reaction with the orthoamides 4a, c yielding mixtures of the isomeric pyrazoles 19 and 20. The reaction of 4c with acylhydrazines 21a - e affords the pyrazole 13b. The pyrazole 2

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17

Khalifa, Nagy M., Ahmed M. Naglah, Mohamed A. Al-Omar, Mohamed H. Abo-Ghalia, and Abd El-Galil E. Amr. "Synthesis and Reactions of New Chiral Linear Carboxamides with an Incorporated Peptide Linkage Using Nalidixic Acid and Amino Acids as Starting Materials." Zeitschrift für Naturforschung B 69, no. 3 (2014): 351–61. http://dx.doi.org/10.5560/znb.2014-3282.

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4bA series of chiral linear carboxamide derivatives (2- 15) with an incorporated peptide linkage have been prepared via the coupling of 1-ethyl-1,4-dihydro-7-methyl-4-oxo-quinoline-3-carboxylic acid (nalidixic acid, 1) with appropriate amino acid methyl esters. Coupling of 1 with amino acid methyl esters gave the corresponding peptide methyl esters 2, which were hydrolyzed with methanolic sodium hydroxide to the corresponding acids 3. Hydrazinolysis of esters 2with hydrazine hydrate afforded the corresponding acid hydrazide derivatives 4. The latter compounds were coupled with appropriate alde

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18

Stepanova, Elena V., and Andrei I. Stepanov. "SYNTHESIS AND REACTIVITY OF 4-NITRO-3-(TETRAZOL-5-YL) FURAZAN WITH N- AND O-NUCLEOPHILES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 5 (2017): 21. http://dx.doi.org/10.6060/tcct.2017605.5523.

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A rational four-stages scheme for the synthesis of 4-nitro-3-(tetrazol-5-yl)furazane is proposed. The synthesis starts from the stage of 3-amino-4-(1,2,4-oxadiazol-3-yl)-furazan preparation by condensation of amidoxime of 4-aminofurazan-3-carboxylic acid with triethyl orthoformate, further reductive ring opening of 1,2,4-oxadiazole cycle. The action of hydrazine results in amidrazone of 4-aminofurazan-3-carboxylic acid formation. On the next step the diazotization of the resulting compound with sodium nitrite in acetic acid gives 3-amino-4-(tetrazol-5-yl)furazane. At last stage the titled 4-ni

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19

Al-Wabli, Reem I., Iman S. Issa, Maha S. Al-mutairi, Aliyah A. Almomen, and Mohamed I. Attia. "A Facile Synthesis and Molecular Characterization of Certain New Anti-Proliferative Indole-Based Chemical Entities." International Journal of Molecular Sciences 24, no. 9 (2023): 7862. http://dx.doi.org/10.3390/ijms24097862.

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Cancer cells frequently develop drug resistance, which leads to chemotherapeutic treatment failure. Additionally, chemotherapies are hindered by their high toxicity. Therefore, the development of new chemotherapeutic drugs with improved clinical outcomes and low toxicity is a major priority. Several indole derivatives exhibit distinctive anti-cancer mechanisms which have been associated with various molecular targets. In this study, target compounds 4a–q were obtained through the reaction of substituted benzyl chloride with hydrazine hydrate, which produces benzyl hydrazine. Subsequently, the

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20

Gu, Jinsong, and Xiuhui Lu. "A mechanistic study of 1,3,5-trisubstituted-1,2,3-triazoles by Ab initio method." Progress in Reaction Kinetics and Mechanism 45 (January 2020): 146867832092329. http://dx.doi.org/10.1177/1468678320923295.

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The mechanism of synthesis of 1,3,5-trisubstituted-1,2,4-triazoles from 3-thiopheneacetic acetic acid, 4-pyridine formamidine, and tri-fluoro ethyl hydrazine has been first investigated with B3LYP/6-311++G** method in this article. According to the potential energy profile, it can be predicted that the course of the reaction consists of six elementary reactions. The 3-thiopheneacetic acetic acid and 4-pyridine formamidine form first an intermediate product through a dehydration reaction; the intermediate product further combines with hydrogen ion to form a positive ions; the positive ion react

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21

Azmi, S. Mobarak Nazir. "Studies of bi-valent complexes of Co(II), Ni(II), Mn(II) and Zn(II) with Hydrazine carboxylic acid and Formyl hydrazine carboxylic acid." International Journal of Advanced Academic Studies 1, no. 2 (2019): 168–70. http://dx.doi.org/10.33545/27068919.2019.v1.i2c.241.

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22

Al-Smaisim, Rafah F., Redha E. Al-Bayati, and Abdul Hussain K. Sharba. "Synthesis of New Heterocyclic compounds derived from Pyrazoline-5-one compound." Al Mustansiriyah Journal of Pharmaceutical Sciences 9, no. 1 (2011): 123–31. http://dx.doi.org/10.32947/ajps.v9i1.278.

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In this work new heterocyclic pyrazolin derivatives have been synthesized from diazonium chloride salt of 4-aminobenzoic acid: firstly, Azo compounds were prepared from the reaction of an ethanolic solution of sodium acetate and calculated amount of active methylene compound namely, (ethyl acetoacetate)obtain the corresponding hydrazono derivative (1). Secondly, Cyclocondensation reaction of compound (1) with hydrazine hydrate (2) in boiling ethanol affording the corresponding pyrazoline-5-one. Then compound (2) reacted with thionyl chloride to give the corresponding acid chloride derivative(3

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23

Journal, Baghdad Science. "Synthesis of Some Heterocyclic Compounds derived from 2-mercapto pyrimidine." Baghdad Science Journal 7, no. 2 (2010): 1014–22. http://dx.doi.org/10.21123/bsj.7.2.1014-1022.

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In this work 2-hydrazino pyrimidine (1) was prepared from 2-mercapto pyrimidine with hydrazine hydrate. Treatment of (1) with active methylene compounds gave 2-(3,5-dimethyl -1 H – Pyrazole-1-yl) pyrimidine , whereas the reaction of (1) with carboxylic anhydride namely maleic anhydride or 1,2,3,6-tetra hydro phthalic anhydride yielded 1-Pyrimidine-2-yl-1,2-dihydro pyridazine-3,6-dione (3) and 2 – Pyrimidin -2-yl -2,3,4 a ,5,8 a – hexahydro phthalazine 1,4 – dione (4) . Reaction of (1) with phenyl isothiocyanate and ethyl chloro acetate afforded 3-Phenyl-1,3-thiazolidine-2,4-dione-2( pyrimidine

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24

Askar, Firyal w., Huda A. Hassan, and Nahida A. Jinzeel. "Synthesis of Some Heterocyclic Compounds derived from 2-mercapto pyrimidine." Baghdad Science Journal 7, no. 2 (2010): 1014–22. http://dx.doi.org/10.21123/bsj.2010.7.2.1014-1022.

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In this work 2-hydrazino pyrimidine (1) was prepared from 2-mercapto pyrimidine with hydrazine hydrate. Treatment of (1) with active methylene compounds gave 2-(3,5-dimethyl -1 H – Pyrazole-1-yl) pyrimidine , whereas the reaction of (1) with carboxylic anhydride namely maleic anhydride or 1,2,3,6-tetra hydro phthalic anhydride yielded 1-Pyrimidine-2-yl-1,2-dihydro pyridazine-3,6-dione (3) and 2 – Pyrimidin -2-yl -2,3,4 a ,5,8 a – hexahydro phthalazine 1,4 – dione (4) . Reaction of (1) with phenyl isothiocyanate and ethyl chloro acetate afforded 3-Phenyl-1,3-thiazolidine-2,4-dione-2( pyrimidine

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25

R, Manimekalai, and Kuppusamy K. "PREPARATION, CHARACTERIZATION AND ANTIBACTERIAL STUDIES OF SOME HYDRAZINIUM CARBOXYLATES." Kongunadu Research Journal 1, no. 2 (2014): 41–48. http://dx.doi.org/10.26524/krj36.

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Some new hydrazinium salt of aromatic carboxylic acids have been prepared by neutralization of acid with hydrazine hydrate in aqueous medium and characterized by Analytical, IR spectral and TG-DTA analysis. All compounds undergo two, three or four step decomposition yielding carbon residue as the final product. The in vitro antibacterial screening of 2,4-dichlorophenoxyacetic acid and its hydrazinium salt against Escherichia coli have been investigated. The antibacterial activity of the prepared hydrazinium salt shows more promising activity than the free acid.

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26

D.K., Ramesh, Gopala Krishna B, Mruthyunjaya J. H., Manjunatha S. Katagi, and Girish Bolakatti. "Synthesis and Antimicrobial Evaluation of Newly Sythesized Triazolothiadiazole Analogs." International Journal of Drug Design and Discovery 4, no. 2 (2025): 1050–55. https://doi.org/10.37285/ijddd.4.2.3.

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Potassium dithiocarbazinate of isonicotinic acid hydrazide 1a was treated with hydrazine hydrate to yield 1,2,4-triazole 1b which up on treatment with various carboxylic acids to get series of novel 6-(substituted)-3-(pyridin-4-yl)-[1,2,4]triazolo[3,4-b]thiadiazole (TT1-TT11) The title compounds were characterized on the basis of IR, 1H NMR, 13C NMR and Mass spectral (MS) studies. Further they were evaluated for antibacterial and antifungal by Agar diffusion assay method, antitubercular activity by Micro-plate Alamar Blue Assay (MABA). Among eleven synthesized novel compounds TT2, TT3, TT10, a

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27

Journal, Baghdad Science. "Synthesis of Some Heterocyclic Compounds Derived from 2-Mercapto Benzoxazole." Baghdad Science Journal 10, no. 3 (2013): 766–78. http://dx.doi.org/10.21123/bsj.10.3.766-778.

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New series of 2-mecapto benzoxazole derivatives (1-20) incorporated into fused to different nitrogen and suphur containing heterocyclic were prepared from 2-meracpto benzoxazole, when treated with hydrazine hydrate to afford 2-hydrazino benzoxazol (1). Compound (1) converted to a variety of pyridazinone andphthalazinone derivatives (2-4) by reaction with different carboxylic anhydride. Also, reaction of (1) with phenyl isothiocyanate and ethyl chloro acetate afforded 3-phenyl-1,3-thiazolidin-2,4-dione-2-(benzoxazole-2-yl-hydrazone) (6). Azomethines (7-10) were prepared through reaction of (1)

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28

Askar, Firyal W., Huda A. Hassan, and Nahida A. Jinzeel. "Synthesis of Some Heterocyclic Compounds Derived from 2-Mercapto Benzoxazole." Baghdad Science Journal 10, no. 3 (2013): 766–78. http://dx.doi.org/10.21123/bsj.2013.10.3.766-778.

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New series of 2-mecapto benzoxazole derivatives (1-20) incorporated into fused to different nitrogen and suphur containing heterocyclic were prepared from 2-meracpto benzoxazole, when treated with hydrazine hydrate to afford 2-hydrazino benzoxazol (1). Compound (1) converted to a variety of pyridazinone andphthalazinone derivatives (2-4) by reaction with different carboxylic anhydride. Also, reaction of (1) with phenyl isothiocyanate and ethyl chloro acetate afforded 3-phenyl-1,3-thiazolidin-2,4-dione-2-(benzoxazole-2-yl-hydrazone) (6). Azomethines (7-10) were prepared through reaction of (1)

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Gajdoš, Peter, Soňa Pavlíková, Filip Bureš, and Alžbeta Krutošíková. "2-[3-(Trifluoromethyl)phenyl]furo[3,2-b]pyrroles: synthesis and reactions." Open Chemistry 3, no. 2 (2005): 311–25. http://dx.doi.org/10.2478/bf02475999.

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AbstractThe synthesis and reactions of methyl 2-[3-(trifluoromethyl)phenyl]-4H-furo[3,2-b]pyrrole-5-carboxylate (1a) are described. Upon reaction with methyl iodide, benzyl chloride, or acetic anhydride, this compound gave N-substituted products 1b-d. By hydrolysis of compounds 1a-c, the corresponding acids 2a-c were formed, or by reaction with hydrazine-hydrate, the corresponding carbohydrazides 3a-c were formed. By heating 2-[3-(trifluoromethyl)phenly]-4H-furo[3,2-b]pyrrole-5-carboxylic acid (2a) in acetic anhydride, 4-acetyl-2-[3-(trifluoromethyl)phenyl]furo[3,2-b]pyrrole (4) was formed. By

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30

Hajalsiddig, Tawassl Tajelsir Hassan, and Ahmed Elsadig Mohammed Saeed. "Synthesis of new 6-substituent 2-phenyl and 2-(furan-2-yl)-3-phenyl-quinoline-4-carboxylic acid derivatives." European Journal of Chemistry 10, no. 1 (2019): 57–63. http://dx.doi.org/10.5155/eurjchem.10.1.57-63.1816.

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A synthesis of substituted quinolines has been achieved by the Doebner reaction which is a three component coupling of arylaldehyde, p-amino-acetophenone and phenyl pyruvic acid. The products of 2,3-diary-6-acetyl-quinoline-4-carboxylic acids were obtained by Claisen Schmidt condensation reaction with aldehydes in the presence of sodium hydroxide in order to give the corresponding α,β-unsaturated carbonyls. The substituted α,β-unsaturated carbonyls were condensed with urea, thiourea, hydrazine, phenyl hydrazine, semicarbazide hydrochloride and ethanolamine to synthesized 2-pyrimidinone, 2-pyri

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31

Roy, Susmita, Sarda Sharma, Karumbaiah N. Chappanda, and Chanchal Chakraborty. "MoS2 Quantum Dot Modified Electrode: An Efficient Probe for Electrochemical Detection of Hydrazine." Designs 7, no. 1 (2023): 13. http://dx.doi.org/10.3390/designs7010013.

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The development of an effective sensor system that can detect carcinogenic hydrazine is of prime scientific interest for the protection of human health and the environment. In the present study, MoS2 quantum dots (QDs) with an average diameter of ~5 nm were synthesized using a facile one-step, bottom-up hydrothermal method using cysteine as reducing as well as capping agents. The presence of cysteine was evaluated by FTIR spectroscopy. The synthesized MoS2 QDs were applied to modify the conventional glassy carbon electrode (GCE) in order to detect hydrazine electrochemically in neutral pH cond

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32

Prakash, Chand Jain, Pal Singh Netra, and Chand Pahwa Suresh. "Synthesis, characterization and spectral studies of cobalt(II) complexes of ethyl and t-butyl esters of hydrazine carboxylic acid." Journal of Indian Chemical Society Vol. 89, Feb 2012 (2012): 275–79. https://doi.org/10.5281/zenodo.5759608.

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Department of Chemistry, Meerut College, Meerut-250 001, Uttar Pradesh, India <em>E-mail</em> : pcjain44@gmail.com <em>Manuscript received 30 December 2009, revised 06 June 2011, accepted 20 June 2011</em> Cobalt(II) complexes of the general compositions, [CoL<sub>2</sub>X<sub>2</sub>] (L = NH<sub>2</sub>NHCOOR; R = Et or Bu<sup>t</sup>; X = CI<sup>-</sup>, Br<sup>-</sup>, I<sup>-</sup>, N0<sub>3</sub><sup>-</sup> and NCS<sup>-</sup>) have been synthesized and characterized by elemental analysis, molar conductance, spectroscopic techniques (UV-Vis, IR) and magnetic moment measurements. The low

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33

Kasimogullari, Rahmi, Belma Zengin, Makbule Maden, Samet Mert, and Cavit Kazaz. "Synthesis of new derivatives of 1-(3-amino-phenyl)-4- benzoyl-5-phenyl-1h-pyrazole-3-carboxylic acid." Journal of the Serbian Chemical Society 75, no. 12 (2010): 1625–35. http://dx.doi.org/10.2298/jsc101018135k.

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4-Benzoyl-1-(3-aminophenyl)-5-phenyl-1H-pyrazole-3- carboxylic acid (1) was synthesized according to the literature.1 2-(3- Aminophenyl)-3,4-diphenyl-2H-pyrazolo[3,4-d]pyridazin-7(6H)-one (5) was obtained by the cyclocondensation reaction of 1 with hydrazine hydrate. New pyrazole derivatives of compounds 1 and 5 were synthesized by their reaction with ?-diketones, ?-ketoesters, ?-naphthol, phenol and various other reagents. The structures of the synthesized compounds were characterized by 1H-NMR, 13C-NMR, IR and Mass spectroscopy, as well as elemental analysis.

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34

Cui, Hu, Youzhi Zhang, Xuanjun Wang, and Liu Yang. "Synthesis of Hydroxy Aminimide from Unsymmetric Dimethyl Hydrazine Through One Pot Reaction: A New Nanoscale Access for the Reutilization of Unsymmetrical Dimethyl Hydrazine." Journal of Nanoscience and Nanotechnology 20, no. 8 (2020): 5123–30. http://dx.doi.org/10.1166/jnn.2020.18500.

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In this paper, two new kinds of hydroxy aminimide were nanoscale synthesized utilizing Unsymmetrical dimethyl hydrazine (UDMH) and economical carboxylic acid methyl ester was analyzed through one pot reaction. The reaction conditions were examined and the best reaction temperature was 20 °C with the reaction time of 60 h, achieving a highest yield of 83.21% for the two aminimides. Structures of the final products are characterized by GC-MS, FT-IR and NMR. Then the thermal stability of the aminimide is tested and it is found that the decomposition temperature of one aminimide is 65.20 °C, which

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35

S, Zine Babasaheb, Najan Sopan A, Dhonde Shrikant P, and Mazahar Farooqui. "Synthesis, Characterization and Biological Evaluation of Schiff's bases containing Indazole Moiety." Der Pharma Chemica 15, no. 3 (2023): 4. https://doi.org/10.5281/zenodo.13319875.

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Indazole containing derivatives represent one of the most important heterocycles in pharmaceuticals. Substituted indazole derivatives bear a variety of functional groups and display versatile biological activities. A series of new Indazolyl derivatives have been prepared from commercially available N-substituted-3-indazole carboxylic acid and methanol with sulphuric acid. Synthesis of these compounds proceeds through the formation of 1-ethyl-1H-indazole -3-carboxylate, by acidic esterification, then conveted in to 1-ethyl-1H-indazole -3-hydrazide using hyrdazine hydrate in ethanol at reflux te

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36

Babasaheb, S. Zine, A. Najan Sopan, and Farooqui Mazahar. "Synthesis, Characterization and Biological Evaluation of Schiff's bases containing Indazole Moiety." DER PHARMA CHEMICA 15, no. 3 (2023): 4. https://doi.org/10.4172/0975-413X.15.3.34-37.

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Indazole containing derivatives represent one of the most important heterocycles in pharmaceuticals. Substituted indazole derivatives bear a variety of functional groups and display versatile biological activities. A series of new Indazolyl derivatives have been prepared from commercially available N-substituted-3-indazole carboxylic acid and methanol with sulphuric acid. Synthesis of these compounds proceeds through the formation of 1-ethyl-1H-indazole -3-carboxylate, by acidic esterification, then conveted in to 1-ethyl-1H-indazole -3-hydrazide using hyrdazine hydrate in ethanol at reflux te

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37

S, Zine Babasaheb, Sopan A. Najan, Shrikant P. Dhonde, and Mazahar Farooqui. "Synthesis, Characterization and Biological Evaluation of Schiff's bases containing Indazole Moiety." Der Pharma Chemica 15, no. 3 (2023): 4. https://doi.org/10.5281/zenodo.10952012.

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Indazole containing derivatives represent one of the most important heterocycles in pharmaceuticals. Substituted indazole derivatives bear a variety of functional groups and display versatile biological activities. A series of new Indazolyl derivatives have been prepared from commercially available N-substituted-3-indazole carboxylic acid and methanol with sulphuric acid. Synthesis of these compounds proceeds through the formation of 1-ethyl-1H-indazole -3-carboxylate, by acidic esterification, then conveted in to 1-ethyl-1H-indazole -3-hydrazide using hyrdazine hydrate in ethanol at reflux te

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38

Ganji, Saidulu, Padma Bukya, Zhong-Wen Liu, Kamaraju Seetha Rama Rao, and David Raju Burri. "A carboxylic acid functionalized SBA-15 supported Pd nanocatalyst: an efficient catalyst for hydrogenation of nitrobenzene to aniline in water." New Journal of Chemistry 43, no. 30 (2019): 11871–75. http://dx.doi.org/10.1039/c9nj01743g.

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39

P., C. Jain, C. Pahwa S., and P. Singh N. "Synthesis, characterization and spectral studies of copper(II) complexes of o-ethyl and o-t-butylesters of hydrazine carboxylic acid." Journal of Indian Chemical Society Vol. 84, Sep 2007 (2007): 934–36. https://doi.org/10.5281/zenodo.5827289.

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Chemical Laboratories, Meerut College, Meerut-250 001, Uttar Pradesh, India . <em>E-mail </em>: pcjain44@gmail.com  <em>Manuscript received 12 February 2007, revised 5 July 2007, accepted 6 July 2007</em> New copper(II) complexes of the general composition CuL<sub>2</sub>X<sub>2</sub> (where L = <em>o</em>-ethyl and <em>o</em>-<em>t</em>-butylesters of hydrazine carboxylic acid, X = Cl<sup>-</sup>, Br<sup>·</sup>, NO<sub>3</sub><sup>-</sup>, NCS<sup>-</sup>) have been synthesized and characterized by elemental analysis, molar conductance, spectroscopic techniques (UV-Vis, IR)

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40

Sangeetha., K.R. "STUDIES ON THE INTERACTION OF HYDRAZINE AND ASPARTIC ACID TOWARDS SOME TRANSITION METALS AND THEIR BIOLOGICAL ACTIVITIES." International Journal of Education &Applied Sciences Research 3, no. 7 (2016): 25–36. https://doi.org/10.5281/zenodo.10700175.

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<strong>Abstract </strong> <strong>Objective -</strong> <em>Literature survey indicates that hydrazine the simplest diamine, is known to form fairly stable complexes with mineral and carboxylic acids. Among the different substituted dicarboxylic acids, the potential tridentate α-amino dicarboxylic acid such as aspartic acid has been found to exhibit a strong interaction towards metal ions. Though the interaction of aspartic acid with aromatic amines, imidazole, bipyridine and phenanthroline towards various metals has been well studied, the studies with simple diamine, hydrazine with the

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41

Abbas, Zahra Mohammed, and Rasmia Mahmood Rumez. "SYNTHESIS, CHARACTERIZATION AND SCREENING OF ANTIMICROBIAL ACTIVITY FOR SOME NEW SCHIFF BASES AND THIAZOLIDINONE DERIVATIVES DERIVED FROM AROMATIC CARBOXYLIC ACID." ChemChemTech 68, no. 7 (2025): 27–34. https://doi.org/10.6060/ivkkt.20256807.7189.

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In this study, the antimicrobial properties of newly synthesized Schiff bases (4a-4e) and thiazolidinone compounds (5a-5e) generated from 3,5-dinitrobenzoic acid were assessed. These compounds were obtained by reacting 3,5-dinitrobenzoic acid (1) with ethanol in a few drops of concentrated H2SO4 to produce the ester (2). The acid hydrazide (3), which was produced by treating the ester with hydrazine hydrate, reacted with the proper aldehydes, including 4-bromobenzaldehyde, 4-chlorobenzaldehyde, 4-hydroxybenzaldehyde, 4-methoxybenzaldehyde, and 4-hydroxy-3-methoxybenzaldehyde, respectively, to

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42

Tran Hoai Tu, Nguyen Trung Nhan, and Dang Hoang Phu. "Synthesis of benzamide derivatives and evaluation of their in vitro and in silico tyrosinase inhibitory activities." Vietnam Journal of Science and Technology 62, no. 4 (2024): 660–69. http://dx.doi.org/10.15625/2525-2518/18302.

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In this research, six benzamide derivatives were traditionally synthesized using hydrazine, carbazide, and hydroxylamine derivatives through the pre- or in situ activation of the carboxylic acid functionality. Their chemical structures were identified as N′-phenylbenzohydrazide, N′-(2,4-dinitrophenyl)benzohydrazide, N′-(benzoyloxy)benzamide, N-dibenzoylurea, 2-amino-5-(4-phenyl)-1,3,4-thiadiazole, and benzohydrazide based on the interpretation of NMR spectroscopic data. Among these products, N′-phenylbenzohydrazide and N-(benzoyloxy)benzamide showed potent tyrosinase inhibitory activity with t

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43

Gaber, Ahmed, Walaa F. Alsanie, Majid Alhomrani, Abdulhakeem S. Alamri, Ibrahim M. El-Deen, and Moamen S. Refat. "Synthesis of 1-[(Aryl)(3-amino-5-oxopyrazolidin-4-ylidene) methyl]-2-oxo-1,2-dihydroquinoline-3-carboxylic Acid Derivatives and Their Breast Anticancer Activity." Crystals 11, no. 5 (2021): 571. http://dx.doi.org/10.3390/cryst11050571.

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This research aimed to produce new 1-[(aryl)(3-amino-5-oxopyrazolidin-4-ylidene) methyl]-2-oxo-1,2-dihydroquinoline-3-carboxylic acid derivatives and check their anticancer effect against the breast cancer MCF-7 cell line. The 2-oxo-1,2-dihydroquinoline-3-carboxylic acid (4) compound was obtained by hydrolyzing ethyl 2-oxo-1,2-dihydroquinoline-3-carboxylate (2) with thiourea and anhydrous potassium carbonate ethanol, which was then treated with ethyl 3-substituted 2-cyanoacrylates (6) in the presence of triethylamine in diethyl formamide to give 1-[2-(ethoxy)carbonyl-2-cyano-1-arylvinyl]-2-oxo

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44

Shabeeb, Ihsan, Luay Al-Essa, Majed Shtaiwi, et al. "New Hydrazide-hydrazone Derivatives of Quinoline 3-Carboxylic Acid Hydrazide: Synthesis, Theoretical Modeling and Antibacterial Evaluation." Letters in Organic Chemistry 16, no. 5 (2019): 430–36. http://dx.doi.org/10.2174/1570178616666181227122326.

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A series of biologically active 3-quinoline carboxylic acid hydrazide-hydrazones has been synthesized from 3-quinoline carboxylic acid hydrazide and a variety of aldehydes, with moderate to good yields. The chemical structures of the new products were confirmed by elemental analysis, IR, and 1H NMR, 13C NMR spectral data. The structural and frontier molecular orbital (FMO) properties and the density functional theory (DFT) calculations were conducted for the new compounds. The new hydrazide-hydrazones exhibited low to moderate antibacterial activity against Staphylococcus aureus and Esherichia

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45

BUTKUS, E., and B. BELINITE-VIL'YAMS. "ChemInform Abstract: Reaction of 4,9-Dioxobicyclo(3.3.1)nonane-2-carboxylic Acid Methyl Ester (I) with Hydrazine Hydrate." ChemInform 26, no. 41 (2010): no. http://dx.doi.org/10.1002/chin.199541206.

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46

KORKODINOVA, L. M., V. L. GEIN, and M. I. VAKHRIN. "ChemInform Abstract: Reaction of 4(3H)-Oxo-3,1-benzoxazin-2-carboxylic Acid N-Allylamide (I) with Hydrazine." ChemInform 25, no. 52 (2010): no. http://dx.doi.org/10.1002/chin.199452190.

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47

G., S. Sanyal, K. Nath P., and Ganguly R. "Studies on oxovanadium(IV) and dioxouranium(VI) complexes of Schiff bases derived from pyrazine-2-carboxylic acid hydrazine and pyrazine-2,3-dicarboxylic acid dihydrazide with salicylaldehyde." Journal of Indian Chemical Society Vol. 79, Jan 2002 (2002): 54–57. https://doi.org/10.5281/zenodo.5840234.

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Department of Chemistry, University of Kalyani, Kalyani-741 235, India <em>E-mail : </em>rakesh_ganguly@yahoo.com                           <em>Fax : </em>91-33-5828282 <em>Manuscript received 6 September 2000, revised 16 March 2001, accepted 12 May 2001</em> Oxovanadium(IV) and dioxouranium(VI) complexes of Schiff bases (L and L') derived respectively from pyrazine-2-carboxylic acid hydrazide and pyrazine-2,3-dicarboxylic acid dihydrazide with salicylaldehyde h

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48

Mateev, Emilio, Muhammed Tilahun Muhammed, Ali Irfan, Shubham Sharma, Maya Georgieva, and Alexander Zlatkov. "Hydrazide-hydrazones as novel antioxidants - in vitro, molecular docking and DFT studies." Pharmacia 71 (October 16, 2024): 1–8. http://dx.doi.org/10.3897/pharmacia.71.e133114.

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The pathogenesis of many diseases, such as obesity, depression, cancer, cataract, and neurodegenerative diseases, is related to the generation of reactive oxygen species (ROS). Structures possessing radical-scavenging properties act as antioxidants and they could prevent the progression of the aforementioned diseases. Therefore, the current work was focused on the resynthesis and the antioxidant evaluation of 13 hydrazide-hydrazones. Two in vitro tests - DPPH and ABTS, were applied for the determination of the antioxidant capacities. The free-radical scavenging assays displayed that the hydraz

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MIYATAKE, Norifumi, Masaharu KAMO, Kazuo SATAKE, Yohtaro UCHIYAMA, and Akira TSUGITA. "Removal of N-terminal formyl groups and deblocking of pyrrolidone carboxylic acid of proteins with anhydrous hydrazine vapor." European Journal of Biochemistry 212, no. 3 (1993): 785–89. http://dx.doi.org/10.1111/j.1432-1033.1993.tb17719.x.

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50

Srivastva, Abhay Nanda, Netra Pal Singh, and Chandra Kiran Shriwastaw. "Physicochemical studies on bioactive Cr(III) coordination compounds with esters of hydrazine carboxylic acid as hetero donor ligands." Research on Chemical Intermediates 43, no. 10 (2017): 5453–65. http://dx.doi.org/10.1007/s11164-017-2939-y.

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