Academic literature on the topic 'Phenyl hydrazine method'

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Journal articles on the topic "Phenyl hydrazine method"

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Ananthi, Vadamalai, Kaliyaraj Rajalakshmi, Inbasekaran Muthuvel, and Ganesamoorthy Thirunarayanan. "Solid acidic FeCl3/Bentonite catalyzed solvent-free condensation: Synthesis, spectral studies and antimicrobial activities of some aryl hydrazine Schiff’s bases." Annales Universitatis Mariae Curie-Sklodowska, sectio AA – Chemia 71, no. 2 (2017): 127. http://dx.doi.org/10.17951/aa.2016.71.2.127.

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<p>Some aryl hydrazide derivatives have been synthesized including 1-(3-chloro-4-nitrophenyl)-2-(3-substituted benzylidene) hydrazines by FeCl<sub>3</sub>/Bentonite catalyzed solvent-free condensation of substituted phenyl hydrazine and aldehydes under microwave irradiation. The yields of the hydrazides are more than 70%. The synthesized hydrazides are characterized by the physical constants, micro analysis and spectroscopic data. Effect of catalyst, solvent effect substituent effect and optimization of the catalyst was studied by the percentage of isolated yields. From the c
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Kaur, Aneet Kamal, Renu Bala, Poonam Kumari, Sumit Sood, and Karan Singh. "Microwave Assisted Vilsmeier-Haack Reaction on Substituted Cyclohexanone Hydrazones: Synthesis of Novel 4,5,6,7-Tetrahydroindazole Derivatives." Letters in Organic Chemistry 16, no. 3 (2019): 170–75. http://dx.doi.org/10.2174/1570178615666180917101637.

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Vilsmeier-Haack reaction is one of the most important chemical reactions used for formylation of electron-rich arens. Even though Vilsmeier-Haack reaction was studied on a wide variety of hydrazones of enolizable ketones, literature lacks the examples of the use of 4-substituted cyclohexanones as a substrate. The cyclization potential of hydrazones of cyclic keto compounds is still interested topic of investigation. In the present study, the reaction of various hydrazines with 4-substituted cyclohexanones was proceeded and the resulted hydrazones in crude form were treated with Vilsmeier- Haac
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GHAMMAMY, SHAHRIAR, and SAJJAD SEDAGHAT. "Determination and Characterization of New Palladium Complexes and Study of their Properties." Material Science Research India 9, no. 2 (2012): 223–26. http://dx.doi.org/10.13005/msri/090207.

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In the current study, two complexes prepared using ligands derived from hydrazine, tris [N (2, 4 di nitro phenyl) N’-(3-Nitro benzylidene) hydrazine[Pd(C13H10N5O4)]Cl2 and tris [N(2, 4 di nitro phenyl) N’-(3-phenyl alylidene) hydrazine[Pd(C15H13N4O4)]Cl2 using spectrometry techniques of UV-VIS and IR methods. In the current compounds, the way these ligands bonding with central metal investigated using IR method. Substitutions of C=N and C=O indicate that palladium being coordinated with ligands.
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Raut, Santosh, Bharat Dhotre, Atul Tidke, and Mohammad Arif Pathan. "An Operationally Simple and Efficient Synthesis of 7-Benzylidene-substitutedphenyl- 3,3a,4,5,6,7-hexahydro-2H-indazole by Grinding Method." Current Organic Synthesis 17, no. 4 (2020): 313–21. http://dx.doi.org/10.2174/1570179417666200406142118.

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Background: An eco-friendly, operationally simple and efficient reaction is shown between various 2,6-bis-(substituted-benzylidene)-cyclohexanones and differently substituted hydrazine in the presence of acetic acid. Methods: The reaction between various 2,6-bis-(substituted-benzylidene)-cyclohexanones and differently substituted hydrazine in the presence of acetic acid afforded 7-Benzylidene-substituted-phenyl-3,3a,4,5,6,7- hexahydro-2H-indazole in 74 to 92 % yield in short reaction time using the grindstone technique. Results and Discussion: The notable advantages of this method include mild
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Ali, M. M., M. Jesmin, S. M. A. Salam, J. A. Khanam, M. F. Islam, and M. N. Islam. "Pesticidal Activities of Some Schiff Bases Derived from Benzoin, Salicylaldehyde, Aminophenol and 2,4 Dinitrophenyl Hydrazine." Journal of Scientific Research 1, no. 3 (2009): 641–46. http://dx.doi.org/10.3329/jsr.v1i3.2585.

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The pesticidal activities of three Schiff bases namely PDH [N- (1 phenyl 2 hydroxy 2 phenyl ethylidine) 2¢4¢ dinitrophenyl hydrazine], PHP [N(1-phenyl 2 hydroxy -2 phenyl ethylidine) 2¢ hydroxy phenyl imine] and HHP [N (2-hydroxy benzylidine) 2¢ hydroxy phenyl imine] derived from benzoin, salicylaldehyde, 2 aminophenol and 2,4 dinitrophenyl hydrazine were evaluated against Tribolium castaneum. Probit mortality were studied by surface film treatment method at different doses of the compounds. The results showed that the LD50 values as recorded after 24 hours of treatment were 15.1268, 3.0922 an
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Bhandarkar, Subodh, and Bhavana Khobragade. "Synthesis and Biological Study of 2-( 5-aryl-4,5-dihydro-1-substituted-pyrazol-3-yl )-Substituted-Naphthalene-1-Ol." Advanced Materials Research 1110 (June 2015): 306–10. http://dx.doi.org/10.4028/www.scientific.net/amr.1110.306.

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The literature survey reveals that pyrazoline derivatives have been studied extensively because of their ready accessibility, diverse chemical reactivity, broad spectrum of biological activity and variety of Industrial applications. Pyrazolines with sulphonamidoaryl substituent at 3-position show cerebroprotective, antidepressant activity , anti-implantation activity, hypoglycemic activity. Due to this vital biological roll of pyrazoline derivatives it was thought to synthesized titled pyrazolines. 2-Acetyl-1-naphthol is prepared by Modified Nenchi’s method which on treatment with furfuraldehy
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.Gowd, V. S. "Facile and Multicomponent Synthesis of Amino Pyrazole employed by Mg (NO3)2 As Catalyst." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 05 (2025): 1–9. https://doi.org/10.55041/ijsrem48648.

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ABSTRACT: The right path of investigation in the present study, an efficient and cost-effective method for the preparation of derivatives of 5-Amino-1, 3-diaryl-1 H-pyrazole-4-carbonitriles using Phenyl hydrazine, substituted aromatic aldehyde, and malononitrile in acetonitrile as a solvent employing Mg(NO3)2 as a catalyst under solvent condition. The chemical structures of the titled compounds were confirmed by 1H-NMR &13CNMR, Mass spectral and Elemental analysis. Antimicrobial activities of the titled compounds were also examined by various strains and exhibited mild to moderate anti-bac
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Giribabu, G., and Dr KRISHNARAO. "One Pot Multicomponent Synthesis of Amino Pyrazole Promoted by Imidazole and Bioevluation." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 04 (2025): 1–9. https://doi.org/10.55041/ijsrem44605.

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In the present study and followed by conventional method, an efficient and design synthesis a novel series of 5-Amino-1,3-diphenyl-1H-pyrazole-4-carbonitrile derivatives. These derivatives can be obtained by Phenyl hydrazine, aromatic aldehydes, and malononitrile in presence of base catalyst Imidazole in ethanol as a solvent at reflux. All the newly obtained derivatives were evaluated by the advanced spectroscopic analysis such as 1HNMR, 13CNMR and LCMS and structural determination of titled analogous were calculated by elemental analysis. In addition to the newly synthesised compounds were ex
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Komal, Savaliya, and S. Patel Pankaj. "Synthesis and Biological evaluation Of Some New Benzoyl Pyrazole Derivatives bearing a 6,8-Dibromo-2-methylquinazolin-4-one Moiety." Der Pharma Chemica 14, no. 2 (2022): 6. https://doi.org/10.4172/0975-413X.14.2.1-5.

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A new series of 3-[4-(1-benzoyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one have been synthesized by the condensation reaction of 6,8-dibromo-3-{4-[5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl]phenyl}-2-methylquinazolin-4-one with benzoyl chloride by using pyridine as a solvent. The intermediate have been synthesized by refluxation of 6,8-dibromo-3-{4-[3- (substitutedphenyl)prop-2-enoyl]phenyl}-2-methylquinazolin-4-one (0.01M) and 99% hydrazine hydrate (0.015M) by using ethanol (50ml) as a solvent with various aldehydes. The chemical structures
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Savaliya, Komal, and S. Patel Pankaj. "Synthesis and Biological evaluation Of Some New Benzoyl Pyrazole Derivatives bearing a 6,8-Dibromo-2-methylquinazolin-4-one Moiety." Der Pharma Chemica 14, no. 2 (2022): 6. https://doi.org/10.5281/zenodo.13353950.

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A new series of 3-[4-(1-benzoyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one have been synthesized by the condensation reaction of 6,8-dibromo-3-{4-[5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl]phenyl}-2-methylquinazolin-4-one with benzoyl chloride by using pyridine as a solvent. The intermediate have been synthesized by refluxation of 6,8-dibromo-3-{4-[3- (substitutedphenyl)prop-2-enoyl]phenyl}-2-methylquinazolin-4-one (0.01M) and 99% hydrazine hydrate (0.015M) by using ethanol (50ml) as a solvent with various aldehydes. The chemical structures
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Dissertations / Theses on the topic "Phenyl hydrazine method"

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Haelters, Jean-Pierre. "Synthèse de dérivés phosphono-indoliques-benzofuranniques et -pyrroliques à partir d'hydrazones phosphonates." Brest, 1987. http://www.theses.fr/1987BRES2002.

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Des derives phosphonoindoliques sont prepares par cyclisation d'arylhydrazones d'oxoalkylphosphonates selon fisher et par cyclodeshydratation d'arylamino-1 et arylamino-3 oxo-2 propylphosphonates selon bischler. Des indolyl-2 et indolyl-3 phosphonates, des indolylmethyl-2 et des indolylmethyl-3 phosphonates diversement substitues et leurs acides phosphoniques correspondants sont decrits. Toutes structures sont analysees par rmn **(1)h, **(31)p et 1**(3)c. L'analogue phosphore de l'intermediaire a aussi ete prepare. L'extention de la reaction de bischler aux aryloxycetones permet d'atteindre de
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Book chapters on the topic "Phenyl hydrazine method"

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Ghate, Manjunath, and Manohar V. Kulkarni. "Unusual reaction of 4-bromomethyl coumarin with hydrazine hydrate and phenyl hydrazine in ethanol and acetic acid medium: and New method of synthesis of 3-oxo- 4-benzopyridazine." In 19th International Congress on Heterocyclic Chemistry. Elsevier, 2003. http://dx.doi.org/10.1016/b978-0-08-044304-1.50151-9.

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Conference papers on the topic "Phenyl hydrazine method"

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Popusoi, Ana, Nicanor Barba, and Aurelian Gulea. "Synthesis of 1,3-Phenyl(Pyridyl)propenones with thiosemicarbazidic groups." In Scientific seminar with international participation "New frontiers in natural product chemistry". Institute of Chemistry, Republic of Moldova, 2023. http://dx.doi.org/10.19261/nfnpc.2023.ab03.

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The bibliographic study of chalcones of the type 1,3-aryl(heteryl)propen-2-one with thiosemicarbazidic 4- and 1,4-disubstituted and thisemicarbazonic groups respectively gives us the information that they have a wide spectrum of biological activity, but methods of their synthesis are less described in the literature, and they became our object of study. 4,5-Dihydro-1-H-(pyrazol-3-yl)phenylhydrazinecarbothioamides 3a and 3b were obtained according to the following scheme:Reagents and reaction conditions: i, ii) 2-Py, 25oC – 24h, 90-95oC – 3h, 77-82%; iii) DMF, CH3COOH, 70-80oC, 2-3h, 60-63%. Fi
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