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Journal articles on the topic 'Hydrazino benzothiazoles'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Renu, B. Ghayalkar, and P. Deshmukh Shirish. "Synthesis and antimicrobial activity of 1-naphthyl-2-hydrazino-1,3-benzothiazolylcarbamide." Journal of Indian Chemical Society Vol. 91, Feb 2014 (2014): 305–8. https://doi.org/10.5281/zenodo.5749148.

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Department of Chemistry, Shri Shivaji College, Akola-444 001, Maharashtra, India <em>E-mail</em> : renughayalkar@gmail.com <em>Manuscript received online 14 March 2013, revised 19 April 2013, accepted 22 April 2013</em> Seven novel 1-naphthyl-2-hydrazino-1,3-benzothiazolylcarbamides were synthesised by interacting 1-naphthyl isocyanate and various 2-hydrazino-1,3-benzothiazoles. The identities of these newly synthesised carbamides have been established on the basis of usual chemical transformations and<strong> </strong>IR, <sup>1</sup>H NMR and Mass spectral studies and screened for their poss

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2

Heda, Kavita. M. "Newly synthesized compounds from 2- hydrazino benzothiazole: Characterization, and evaluation of their antibacterial potential." International Journal of Advance and Applied Research 5, no. 23 (2024): 291–94. https://doi.org/10.5281/zenodo.13622529.

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Abstract:Serial of 1-tetra-O-benzoyl-β-D-glucosyl-3-(2)-hydrazino-1, 3-substituted benzothiozolyl thiocarbamide has been synthesized by the interaction  of   two pharmocophores,  tetra-O-benzoyl-β-D-glucosyl isothiocyanates and amine substituted 2-hydrazino-1,3-benzothiazoles in acetone medium. The reaction mixture was kept at room temp for 24 hrs. In acetone medium. Acetone is evaporated then product is recrystallised by petroleum ether (60-80%).  Benz-fused compounds have been employed in the synthesis of various compounds which show very potential pharmacologic

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3

K. Jassim, Ibtisam, Sawsan S. Harth, Rua M. Dhedan, and Ali Obais Abd. "Synthesis and study the biological activity of some six, five and fused ring heteroatome systems derived from 2-mercapto benzothiazole." Tikrit Journal of Pharmaceutical Sciences 8, no. 1 (2023): 96–105. http://dx.doi.org/10.25130/tjphs.2012.8.1.12.96.105.

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In this paper ,new series of 2-hydrazino benzothiazole [1], 2-N-benzothiazole-N`-phenyl hydrazine carboxamide [2], 2-N-[(3)-N`-phenyl-5-(p-bromophenyl)-2`-hydroxy-1,3-oxazolin-2`-yl] benzothiazol hydrazine [3] , 2-N-benzothiazole-N`-1-naphthyl hydrazine carboxamide [4], 2-N-[(3`)-N`-(1-naphthyl)-5`-(p-bromo phenyl)-2`-hydroxy-1,3-oxazolin-2`-yl)] benzothiazol hydrazine [5], of 2-thiaacetic acid benzothiazole [6] ,2-thiaacetyl chloride benzothiazole [7], 5-amino-2-mercapto-1,3,4-thiadiazole [8], of 2-mercapto-[5-acetamid thiamethyl benzothiazol]-1,3,4-thiadiazole [9], 2-phenyl-5-chloromethyl-1,

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4

SHARMA, K. "ChemInform Abstract: Chemistry of 2-Hydrazinobenzazoles (2-Hydrazino-benzimidazoles Benzothiazoles and Benzoxazoles)." ChemInform 26, no. 26 (2010): no. http://dx.doi.org/10.1002/chin.199526281.

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5

Sharma, Neetesh Kumar, and Raghvendra Singh Bhadauria. "Synthesis and Biological Evaluation of 1-(6-bromobenzo [d]thiazol-2-yl)-2-(disubstituted methylene) hydrazine derivatives." Journal of Drug Delivery and Therapeutics 9, no. 4-A (2019): 577–86. http://dx.doi.org/10.22270/jddt.v9i4-a.3520.

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Synthesis of a series of various 1-(6-bromobenzo[d]thiazol-2-yl)-2-(disubstitutedmethylene)hydrazine derivatives (7a-7e)have been done. Synthesis of a series of intermediates (3 and 5) have been also done, 6-bromo-1,3-benzothiazole-2-amine (3), 2-hydrazino-6-bromo-1, 3-benzothiazole (5) and final product (7a-7e), 1-(6-bromobenzo[d]thiazol-2-yl)-2-(diphenylmethylene) hydrazine (7a), 1-(6-bromobenzo [d]thiazol-2-yl)-2-(propan-2-ylidene) hydrazine (7b), (E)-2-(butan-2-ylidene)-1-(6-bromobenzo[d]thiazol-2-yl)hydrazine (7c), (Z)-1-(6-bromobenzo[d]thiazol-2-yl)-2-(cyclohexylmethylene) hydrazine (7d)

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6

Sharma, Neetesh Kumar, and Raghvendra Singh Bhadauria. "Synthesis and Biological Evaluation of 1-(6-chlorobenzo [d]thiazol-2-yl)-2-(disubstituted methylene) hydrazine derivatives." Journal of Drug Delivery and Therapeutics 9, no. 4-A (2019): 561–72. http://dx.doi.org/10.22270/jddt.v9i4-a.3515.

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Synthesis of a series of various 1-(6-chlorobenzo[d]thiazol-2-yl)-2-(disubstitutedmethylene)hydrazine derivatives (7a-7e)have been done. Synthesis of a series of intermediates (3 and 5) have been also done, 6-Chloro-2-amine-1,3-benzothiazole (3), 2-hydrazino-6-chloro-1, 3-benzothiazole (5) and final product (7a-7e), 1-(6-chlorobenzo[d]thiazol-2-yl)-2-(diphenylmethylene) hydrazine (7a), 1-(6-chlorobenzo [d]thiazol-2-yl)-2-(propan-2-ylidene) hydrazine (7b), (E)-2-(butan-2-ylidene)-1-(6-chlorobenzo[d]thiazol-2-yl)hydrazine (7c), (Z)-1-(6-chlorobenzo[d]thiazol-2-yl)-2-(cyclohexylmethylene) hydrazi

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7

Bhat, M., S. L. Belagali, N. K. H. Kumar, and S. Jagannath. "Anti-mitotic Activity of the Benzothiazole-pyrazole Hybrid Derivatives." Anti-Infective Agents 17, no. 1 (2018): 66–73. http://dx.doi.org/10.2174/2211352516666180914101758.

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Background: Nitrogen-containing heterocyclics are abundant in natural products and also in synthetic drug molecules because of a variety of applications and superior pharmacological profile action. Pyrazoles are the integral architects of many of the heterocyclic compounds with superior biological activity. Methods: Two series of the pyrazole conjugated Benzothiazole derivatives were synthesized. The pyrazoles were synthesized by the Vilsmeier-Haack reaction and then conjugated with benzothiazole hydrazine and hydrazide by imine bond formation. The synthesized compounds were screened for anti-

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8

Lamkane, Rachana B., Priyanka M. Khadasare, Pooja M. Shinde, et al. "Synthesis and Biological Screening of Novel Derivatives of Benzothiazol as Anticonvulsant Agents." SAR Journal of Medical Biochemistry 4, no. 01 (2023): 6–15. http://dx.doi.org/10.36346/sarjmb.2023.v04i01.002.

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The Benzothiazole ring system belongs to a much studied class of compound. In the last few decades, the chemistry of benzothiazole and their fused heterocyclic derivatives have received considerable attention owing to their significant and effective biological activity. The present study aimed to design and synthesize novel derivatives of bezothiazole obtained from 3-chloro-4-flouro aniline treated with potassium thiocynide with chloro acetyl chloride gives (7-chloro-6-fluro-1,3-benzothiazol-2-yl) acetyl chloride which is converted into hydrazide and yields the resultant compound derivatives o

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9

Morscher, Alexandra, Marcus V. N. de Souza, James L. Wardell, and William T. A. Harrison. "Expected and unexpected products of reactions of 2-hydrazinylbenzothiazole with 3-nitrobenzenesulfonyl chloride in different solvents." Acta Crystallographica Section E Crystallographic Communications 74, no. 5 (2018): 673–77. http://dx.doi.org/10.1107/s2056989018005595.

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The syntheses and crystal structures of 2-[2-(propan-2-ylidene)hydrazinyl]-1,3-benzothiazol-3-ium 3-nitrobenzenesulfonate (C10H12N2S+·C6H4NO5S−), (I), 2-[2-(3-nitrobenzenesulfonyl)hydrazinyl]-1,3-benzothiazole (C13H10N4O4S2), (II) and 2-[2-(3-nitrobenzenesulfonyl)hydrazinyl]-1,3-benzothiazol-3-ium 3-nitrobenzenesulfonate (C13H11N4O4S2 +·C6H4NO5S−), (III) are reported. Salt (I) arose from an unexpected reaction of 2-hydrazinylbenzothiazole with the acetone solvent in the presence of 3-nitrobenzenesulfonyl chloride, whereas (II) and (III) were recovered from the equivalent reaction carried out i

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10

S.V, Mamatha, S. L. Belagali, and Mahesh Bhat. "Synthesis and SAR Evaluation of Mercapto Triazolobenzothiazole." Anti-Infective Agents 18, no. 4 (2021): 362–74. http://dx.doi.org/10.2174/2211352517666191204095558.

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Background: Benzothiazoles possess a vast sphere of biological activities including anti- inflammatory, antibacterial activities whereas triazoles display various pharmacological properties including antimicrobial and antitubercular activities. Hence, triazole conjugated benzothiazole side-chain anticipating their interesting biological properties has been focused upon. Objective: The objective of the current work is synthesis and biological evaluation of a new series of benzothiazole appended triazole derivatives. Methods: The target compounds were prepared via a multi-step method involving t

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11

Abbas A. Mohammed, Hamid H. Mohammed, Mustafa T, Zahraa abed hussain, and Zainab N. Mageed. "Synthesis , Characterization and Study the Effect of Benzothiazol-pyrazole Derivatives on the Activity of AST, ALT Enzymes." Journal of Kufa for Chemical Sciences 2, no. 9 (2023): 242–63. http://dx.doi.org/10.36329/jkcm/2022/v2.i9.13297.

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This work includes synthesis some of 2-(4,5-dihydro-1H-pyrazol-1-yl)-1,3-benzothiazole derivatives which synthesized from 2-hydrazino-1,3-benzothiazole with dicarbonyl compounds. The prepared compounds were characterized by FT-IR, 1HNMR and also studied the physical properties. The effect of the biological activity for these compounds were studied on the activity of AST and ALT enzymes in human serum of myocardial infarction patients. The studies show the compounds (A2 and A5) caused inhibition while the compound (A3 and A4) caused activation for the activity for AST and ALT enzymes.

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12

Dinda, Soumitra, Tamanna Sultana, Suhana Sultana, et al. "Ruthenocycles of benzothiazolyl and pyridyl hydrazones with ancillary PAHs: synthesis, structure, electrochemistry and antimicrobial activity." New Journal of Chemistry 44, no. 26 (2020): 11022–34. http://dx.doi.org/10.1039/d0nj01447h.

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The antimicrobial activity of ruthenocycles of pyridyl and benzothiazolyl hydrazones has been investigated. The study established that such activity is comparatively higher for the complex containing benzothiazolyl hydrazone.

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13

Attiya, Hanaa G., Ruwaidah S. Saeed, Fatimah A. Hasheem, and Muna S. Al-Rawi. "Synthesis of Few New Carrier Polymers Derived from 2-hydrazinylbenzo[d]thiazole." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 12, no. 04 (2022): 1792–96. http://dx.doi.org/10.25258/ijddt.12.4.50.

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2-hydrazinylbenzo[d]thiazole compound [1] is produced from reaction of 2-mercapto-benzothiazole with hydrazine hydride in ethanol. Compound [1] reacted with maleic anhydride in DMF to produce (Z)-4-(2-(benzo[d] thiazol-2yl) hydrazinyl)-4-oxobut-2-enoic acid [compound (2)]. While the treatment of compound [2] with the ammonium persulfate (NH4)2S2O8 (as the initiator) in order to produce compound [3], then compound [3] reacted with thionyl chloride in benzene to produce compound [4], finally compound [4] reaction with various drugs: cephalexin, amoxicillin, sulfamethizole, elecoxib obtained poly

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14

Mahdi, Monther. "Synthesis, Characterization and Antimicrobial Activity of Some Novel 1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile Derivatives." JOURNAL OF ADVANCES IN CHEMISTRY 11, no. 6 (2015): 3635–41. http://dx.doi.org/10.24297/jac.v11i6.851.

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The present research work deals with synthesize a series of various substituted benzothiazole containing 6-amino- 4-(substituted aryl)- tetrahydropyrano[2,3-c]pyrazole-5-carbonitrilic by reacting 2-mercaptobenzothiazole with hydrazine hydrate to synthesize hydrazine derivatives of benzothiazole (1), which then reacted with β- keto ester to develop pyrazole derivative (2), and then finally reacted with malononitrile and different aromatic aldehydes to obtain the final compounds (3a-3f). The structures of the intermediates and final compounds are assigned by using FTIR and 1H-NMR. The final comp

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15

Tang, Zheng, Xiao-Ling Ding, Ying Liu, Zhi-Min Zhao, and Bao-Xiang Zhao. "A new probe based on rhodamine B and benzothiazole hydrazine for sensing hypochlorite in living cells and real water samples." RSC Advances 5, no. 121 (2015): 99664–68. http://dx.doi.org/10.1039/c5ra20188h.

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We have developed a novel fluorescent probe (RBT) based on rhodamine B and benzothiazole hydrazine units for the detection of hypochlorite in living cells and real water samples with excellent selectivity and sensitivity.

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16

Aljuhani, Ateyatallah, Mohamed S. Nafie, Nader R. Albujuq, et al. "Discovery of new benzothiazole-1,2,3-triazole hybrid-based hydrazone/thiosemicarbazone derivatives as potent EGFR inhibitors with cytotoxicity against cancer." RSC Advances 15, no. 5 (2025): 3570–91. https://doi.org/10.1039/d4ra07540d.

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17

Duan, Wenzeng, Qingsong Liu, Yanmin Huo, Jichun Cui, Shuwen Gong, and Zhipeng Liu. "AIE-active boron complexes based on benzothiazole–hydrazone chelates." Organic & Biomolecular Chemistry 16, no. 27 (2018): 4977–84. http://dx.doi.org/10.1039/c8ob00755a.

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18

Al-Abboodi1, Doaa Hashim, and Naeemah Al-lami. "NEW METHDOLOGY OF SYNTHESIS PYRAZOLO- THIAZOLO DERIVATIVES WITH STUDY ANTIMICROBAL ACTIVITIES." iraqi journal of market research and consumer protection 16, no. 1 (2024): 1–12. http://dx.doi.org/10.28936/jmracpc16.1.2024.(1).

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In this contribution, new derivatives of thiosemicarbazon, cyclic thiazolidinone, yilidine thiazolidinone, and parazolo-thiazole were synthesized, starting from the reaction of 2 -aminobenzothiazole with p-bromo phenacyl bromide to give the first step of 2(4-bromo phenyl) imidazole (2,1 -b) benzo thiazole (1). Compound (1) then was subjected under Viels Myer Haack to yield 3-carbaldehyde linking with imidazo-benzothiazol (2). Compound (2) condensed with thiosemicarbazide togivenewsynthesis of thiosemicarbazon derivative (3). Compound 4-Oxo-1,3-thiazolidine (4) was constituted from reacting com

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19

Sultana, Faria, Mohd Aslam Saifi, Riyaz Syed, et al. "Synthesis of 2-anilinopyridyl linked benzothiazole hydrazones as apoptosis inducing cytotoxic agents." New Journal of Chemistry 43, no. 18 (2019): 7150–61. http://dx.doi.org/10.1039/c8nj06517a.

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20

Ion, Emilia, Mirela Calinescu, Ana Emandi, Victoria Badea, and Dumitru Negoiu. "Copper(II) Complex Compounds with Mixed Hydrazone Ligands." Revista de Chimie 59, no. 1 (2008): 12–16. http://dx.doi.org/10.37358/rc.08.1.1697.

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Three Cu(II) complex compounds with mixed hydrazone ligands have been prepared and characterized in view of their potential biological activity. The complex compounds have the formulas: [Cu(HLa)(Lc)Br], [CuLaLc] and [CuLbLc] . Na, where HLa = 4-dimethylamino benzaldehyde-2-benzothiazolyl hydrazone, H2Lb = 2-hydroxybenzaldehyde-2-benzothiazolyl hydrazone and HLc = 2-hydroxy-1-naphthyliden-N,N-dimethyl hydrazone. The complexes have been characterized by elemental and thermogravimetrical analysis, infrared, electronic and EPR spectra. EPR spectral studies of the complexes gave axial symmetry, wit

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21

Gangadhar, S. Bhopalkar. "Synthesis, Characterization and Antibacterial Activity of 3-amino-6,9-dimethyl-4-oxo-Pyrazolo[3,4-e] Pyrimido[2,3-b][1,3] Benzothiazole." Chemistry Research Journal 7, no. 3 (2022): 121–24. https://doi.org/10.5281/zenodo.11402591.

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<strong>Abstract </strong> Novel fused heterocyclic compound 3-amino-6,9-dimethyl-4-oxo pyrazolo[3,4-<em>e</em>]-pyrimido[2,1-<em>b</em>][1,3] benzothiazole (4) was prepared by the reaction of 3-cyano-6, 9-dimethyl- 4-oxo 2-methylthio-4H-pyrimido[2,1-<em>b</em>][1,3] benzothiazole (3) with hydrazine hydrate in presence of anhydrous K<sub>2</sub>CO<sub>3</sub> in DMF. The compound (3) was synthesized by the reaction of 2-amino- 4,7- dimethyl [1, 3] benzothiazole (1) with Ethyl -2-cyano-3,3’-bis-methylthio acrylate (2). All the synthesised compounds were characterised by spectral analysis

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22

Kuberkar, Sharad V., Vijay N. Bhosale, Sambhaji P. Vartale, and Santosh G. Badne. "Synthesis and some novel reactions of 8-chloro-2H-[1,2,4]triazino[3,4-b] [1,3]benzothiazole-3,4-dione and 6-chloro-2-hydrazino-1,3-benzothiazole." Journal of Chemical Research 2005, no. 10 (2005): 632–35. http://dx.doi.org/10.3184/030823405774663084.

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3,8-Dichloro-4H-[1,2,4]triazino[3,4-b][1,3]benzothiazole-4-one on reaction independently with sodium hydroxide solution and sodium azide undergo novel ring contraction reactions to give 7-chloro[1,2,4]triazolo[3,4-b][1,3] benzothiazole and 8-chloro tetrazolo[1′,5′:1,5][1,2,4]triazolo[3,4-b][1,3]benzothiazole respectively.

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23

Dahikar, Girish D., and Rajendra O. Ganjiwale. "Synthesis and molecular docking of some new quinazoline analogues as anticonvulsants." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 02 (2025): 487. https://doi.org/10.59467/ijhc.2025.35.487.

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Two series of new compounds, namely, 6-substituted-2-ethyl-3-(6-substituted-benzothiazol-2-yl)-3H-quinazolin-4-ones (De1-De10) and 6-substituted-2-ethyl-3-(pyridin-4-yl-formamide)-3H-quinazolin-4-ones (Ee1-Ee2) were prepared by condensing 6-substituted-2-ethyl-4-oxo-4H-3,1-benzoxazines (A1-2) with 6-substituted-2-aminobenzothiazoles (B1-5) and hydrazide of isonicotinic acid (C), respectively. The anticonvulsant activity of six derivatives was assessed against the Maximal Electroshock induced convulsions model in albino mice. All compounds were administered by the intraperitoneal route at a dos

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24

S., N. SAWHNEY, S. DHINDSA G., and VIR DHARAM. "Synthesis of some 2-Heterocyclylphenothiazines as Potential Anti-inflammatory Agents." Journal of Indian Chemical Society Vol. 65, Sep 1988 (1988): 643–47. https://doi.org/10.5281/zenodo.6042671.

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Department of Chemistry, Kurukshetra University, Kurukshetra-132-119 <em>Manuscript received 20 January 1987 revised 25 April 1988, accepted 4 July 1988</em> Twenty six compounds belonging to five different series (1-5), namely, 2-(2-alkyl- or aryl-4-thiazolyl)- and 2-(2-amino- or substituted-amino-4-thiazolyl) phenothiazines (1 and 2, respectively), their 10-acetyl analogues (3),-(2-amino-6-aryl-4-pyrimidinyl)- and 2-(5-aryl-4,5-dihydro-3-pyrazolyl)-phenothiazines (4 and 5, respectively) have been synthesised throuah different routes, 1 and 2 were synthesised by the condensation of 2-chl

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25

M., B. Deshmukh, Salunkhe S.M., V. Anbhule P., and R. Patil D. "Microwave assisted synthesis of some new 2-substituted-1,4-benzothiazine derivatives." Journal of Indian Chemical Society Vol. 87, Oct 2010 (2010): 1227–30. https://doi.org/10.5281/zenodo.5804923.

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Department of Chemistry, Shivaji University, Kolhapur-416 004, Maharashtra, India <em>E-mail :</em> m_ deshmukh1@rediffmail.com <em>Manuscript received 17 June 2008, revised 12 April 2010, accepted 12 April 2010</em> The nitrogen and sulphur containing compounds are well known for their vital role in medicinal chemistry. Here, we report the synthesis of 2-hydrazido-1,4-benzothiazine (2) from 2-carbethoxy 1,4-benzothiazine-3-(1<em>H</em>)-one (1) and hydrazine hydrate which then treated with acetyl acetone, ethyl acetoacetate, cyanoethylacetate to give substituted 2-(benzothiazine-3-one-2-yl-ox

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26

Liu, Xu-Feng, Xiao-Yong Yu, and Shao-Liang Jiang. "2-Hydrazinyl-4-methyl-1,3-benzothiazole." Acta Crystallographica Section E Structure Reports Online 67, no. 7 (2011): o1641. http://dx.doi.org/10.1107/s1600536811020149.

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27

Fun, Hoong-Kun, Ching Kheng Quah, B. K. Sarojini, B. J. Mohan, and B. Narayana. "1-(5-Chloro-6-fluoro-1,3-benzothiazol-2-yl)hydrazine." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2459. http://dx.doi.org/10.1107/s160053681203156x.

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In the title compound, C7H5ClFN3S, the 1,3-benzothiazole ring system is nearly planar (r.m.s. deviation = 0.023 Å). In the crystal, molecules are linkedviaintermolecular N—H...N hydrogen bonds into a two-dimensional network parallel to (100).

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28

Yang, Xiaofeng, Yan Zhang, Yexin Li, et al. "A diketopyrrolopyrrole-based fluorescence turn-on probe for the detection of Pb2+in aqueous solution and living cells." RSC Advances 6, no. 57 (2016): 52004–8. http://dx.doi.org/10.1039/c6ra07378f.

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A diketopyrrolopyrrole-based fluorescent probeDPP-HBTbearing a benzothiazole hydrazone motif exhibited an obvious fluorescent turn-on response toward Pb<sup>2+</sup>ions with a low detection limit of 2.3 × 10<sup>−10</sup>M in aqueous solution.

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29

Liu, Manman, Qian Liu, and Jian Zhang. "Synthesis of 5-Aryl-1-benzothiazolyl-3-ferrocenyl-2-pyrazoline by Condensation of Ferrocenyl Chalcones with 2-Hydrazinyl-benzothiazole." Asian Journal of Chemistry 27, no. 10 (2015): 3753–55. http://dx.doi.org/10.14233/ajchem.2015.18959.

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30

Nogueira, Antônio, Tatyana R. A. Vasconcelos, James L. Wardell, and Solange M. S. V. Wardell. "Crystal structures of hydrazones, 2-(1,3-benzothiazolyl)-NH—N=CH—Ar, prepared from arenealdehydes and 2-hydrazinyl-1,3-benzothiazole." Zeitschrift für Kristallographie 226, no. 11 (2011): 846–60. http://dx.doi.org/10.1524/zkri.2011.1424.

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31

Rajnikant, Dinesh, Kamni, M. B. Deshmukh, S. S. Jagpat, and S. R. Desai. "Crystallographic investigations of benzothiazol-2-yl-hydrazine." Journal of Chemical Crystallography 35, no. 4 (2005): 293–96. http://dx.doi.org/10.1007/s10870-005-1440-4.

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32

Diana, Rosita, Ugo Caruso, Angela Tuzi, and Barbara Panunzi. "A Highly Water-Soluble Fluorescent and Colorimetric pH Probe." Crystals 10, no. 2 (2020): 83. http://dx.doi.org/10.3390/cryst10020083.

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A new 5-(4-((2-(benzothiazole-2-carbonyl)hydrazono)methyl)-3-hydroxyphenoxy)-N,N,N-trimethylpentan-1-aminium bromide (BTABr) fluorescent and colorimetric pH probe was easily synthesized by the condensation reaction of benzothiazole-2-carbohydrazide with 5-(4-formyl-3-hydroxyphenoxy)-N,N,N-trimethylpentan-1-aminium bromide. The benzothiazole moiety provided the emissive part of the molecule and the charged trimethyl amino group guaranteed outstanding solubility in water, for an organic molecule. pH titration experiments indicated that the probe is useful for monitoring acidic and alkaline solut

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Ali, Samer Abbas. "Synthesis and Preliminary Antibacterial Study of New 2-Mercapto-1, 3- Benzothiazole DerivativesWith Expected Biological Activity." Al Mustansiriyah Journal of Pharmaceutical Sciences 13, no. 1 (2013): 119–24. http://dx.doi.org/10.32947/ajps.v13i1.187.

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Benzothiazoles are bicyclic ring system which have multiple applications. as antitumor , antiviral , antibacterial , anthelmintic and some of them showed glucose level.20 lowering effect.Accordingly, research is conducted to synthesize and evaluate some new derivatives as antibacterial agents by linking 2-aminobenzothiazoles with glycine and glycine derivatives.S-benzo[d]thiazol-2-yl2-(2-(2,4-dinitrophenyl)hydrazinyl) ethanethioate has been tested on hospital strains of E.coli and pseudomonas and found to have good activity at different concentrations.

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Aruna, G., Ravindra Kulkarni, Baswaraj Machaa, Malathi Jojula, Shravan Gunda, and G. Achaiah. "Design, Synthesis and Evaluation of Aryloxybenzylidene Hydrazinyl-Benzoxazoles/Benzothiazoles Analogs as Antimycobacterial Agents." Asian Journal of Organic & Medicinal Chemistry 5, no. 3 (2020): 185–91. http://dx.doi.org/10.14233/ajomc.2020.ajomc-p272.

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Substituted 2-(2-(4-aryloxybenzylidene)hydrazinyl)benzothiazole/benzoxazoles series were designed through molecular hybridization and synthesized in condensation reaction of hydrazinylbenzothiazole/ benzoxazole with substituted aryloxy benzaldehydes. All the synthesized compounds were assigned structure based on spectral data and were evaluated for antimycobacterial activity. Among both benzothiazole and benzoxazole derivatives, the compounds 8f and 9e were found to show most potent antitubercular activity with MIC value of 0.89 and 0.92 μM which are on a par with those of standard antitubercu

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35

Fun, Hoong-Kun, Chin Wei Ooi, B. K. Sarojini, B. J. Mohan, and B. Narayana. "1-(6-Chloro-1,3-benzothiazol-2-yl)hydrazine." Acta Crystallographica Section E Structure Reports Online 68, no. 3 (2012): o691—o692. http://dx.doi.org/10.1107/s1600536812005442.

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36

Gangadhar, S. Bhopalkar. "Synthesis, Characterization and Anticancer activity of fused Pyrazolo Pyrimido benzothiazoles." Pharmaceutical and Chemical Journal 8, no. 2 (2021): 68–72. https://doi.org/10.5281/zenodo.13960987.

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The  compound 3-amino- 4-imino 6, 9 dimethyl- pyrazolo-[3, 4-<em>e</em>] pyrimido [2, 3-<em>b</em>] [1, 3] benzothiazole(IV) was obtained by the reaction of 3-Cyano -6, 9-dimethyl -2-methylthio -4-imino -4<em>H</em>-pyrimido [2, 1-<em>b</em>] [1, 3]   benzothiazole (III) with Hydrazine hydrate (80%) in presence of anhydrous K<sub>2</sub>CO<sub>3</sub> in DMF as solvent, and screened their <em>in-vitro</em> anticancer activity by the use of Developmental therapeutic program (DTP) as a computational technique.  DTP selection process helps to design and study the anticancer ag

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37

Firyal W. Askar, Khitam J. Nabhan та Hammed H. Mohamed. "تحضير ودراسات مضادات الميكروبات للمجمعات المعدنية لقواعد شيف 2- (بنزيليدين) بنزوثيازول هيدرازون". Journal of the College of Basic Education 15, № 59 (2022): 1–12. http://dx.doi.org/10.35950/cbej.v13i59.6534.

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تضمن هذا البحث تحضير قاعدة شف 2- (benzylidine) benzothiazole hydrazone من تفاعل 2-hydrazinobenzothiazole مع p-hydroxy benzaldehyde جرى تشخيص قاعدة شف بطريق طيف الأشعة تحت الحمراء (IR ) وطيف الاشعة البنفسجية-المرئية (( UV-Vis و ثم استخدام هذه القاعدة كليكاند في تحضير المعقدات الجديدة مع ايونات عناصر البلاديوم , النيكل, البلاتين والنحاس الثنائية و. جرى تناسق هذه الأيونات مع الليكاند من خلال ذرتي نتروجين مجموعة الأزوميثين

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38

Hadi, Falah Haasan, and Hayder Obaid Jamel. "Preparation and characterization of a new ligand derived from the compounds 2-hydrazinobenzothiazole and 2-amino-6-methoxy benzothiazole and its complexes with some metal ions, evaluating its antibacterial activity, and studying its nanoscale properties." Journal of Kufa for Chemical Sciences 4, no. 1 (2024): 133–52. https://doi.org/10.36329/jkcm/2024/v4.i1.14177.

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New-type Schiff bases were prepared: [2-(benzoxazol-2-yl)-hydrazinyl diene][-2,1-diphenyl-N-(6-methoxybenzothiazol-2-yl)-2,1-diphenylethane]. -1-amine (L) of the mixture. 2-mercaptobenzoxazole was dissolved with hydrazine in absolute ethanol as a first stage to form compound A. while the ligand was obtained in its final from the reaction of compound A with both benzal and 2-amino-6-methoxybenzothiazole. The complex of Ni(II) and Pd(II) was prepared by reacting palladium chloride and nickel chloride with ligand L. The structure of the prepared ligand and its complexes was diagnosed using severa

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Fun, Hoong-Kun, Ching Kheng Quah, D. Munirajasekhar, M. Himaja, and B. K. Sarojini. "1-(6-Fluoro-1,3-benzothiazol-2-yl)-2-(1-phenylethylidene)hydrazine." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2438—o2439. http://dx.doi.org/10.1107/s1600536812030851.

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The asymmetric unit of the title compound, C15H12FN3S, consists of two independent molecules with comparable geometries. In one molecule, the 1,3-benzothiazole ring system (r.m.s. deviation = 0.011 Å) forms a dihedral angle of 19.86 (6)° with the phenyl ring. The corresponding r.m.s. deviation and dihedral angle for the other molecule are 0.014 Å and 22.32 (6)°, respectively. In the crystal, molecules are linkedviaN—H...N, C—H...F and C—H...N hydrogen bonds into a three-dimensional network. The crystal studied was a non-merohedral twin with a refined BASF value of 0.301 (2).

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Özdemir, Ahmet, Gülhan Turan-Zitouni, Asim Kaplancikli, and Dilek Altintop. "Synthesis of some new hydrazone derivatives containing benzothiazole moiety." Journal of the Serbian Chemical Society 77, no. 2 (2012): 141–46. http://dx.doi.org/10.2298/jsc110321171o.

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Hydrazones are important classes of compounds found in many synthetic products. Due to their importance in synthetic chemistry, the present article reports the synthesis of a new series of ten compounds based on the coupling of 2-[2(3H)-benzothiazolone-3-yl]acetylhydrazine and 2-(1,3- benzothiazol-2-yl)sulphanylacetylhydrazine with different aldehydes. The structures of the synthesized compounds were confirmed by elemental analyses, IR, 1H-NMR, 13C-NMR and FAB+-MS spectral data.

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Zhang, Shiqing, Lingling Li, Jinbiao Zhu, Xinyue Mu, Liqiang Yan, and Xiongzhi Wu. "A Dual Spectroscopic Probe Based on Benzothiazole for Detection of Hydrazine." ChemistrySelect 6, no. 29 (2021): 7551–56. http://dx.doi.org/10.1002/slct.202102307.

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Baddeley, Thomas C., Marcus V. N. de Souza, James L. Wardell, Mukesh M. Jotani, and Edward R. T. Tiekink. "N′-(1,3-Benzothiazol-2-yl)benzenesulfonohydrazide: crystal structure, Hirshfeld surface analysis and computational chemistry." Acta Crystallographica Section E Crystallographic Communications 75, no. 4 (2019): 516–23. http://dx.doi.org/10.1107/s2056989019003980.

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The asymmetric unit of the title compound, C13H11N3O2S2, comprises two independent molecules (A and B); the crystal structure was determined by employing synchrotron radiation. The molecules exhibit essentially the same features with an almost planar benzothiazole ring (r.m.s. deviation = 0.026 and 0.009 Å for A and B, respectively), which forms an inclined dihedral angle with the phenyl ring [28.3 (3) and 29.1 (3)°, respectively]. A difference between the molecules is noted in a twist about the N—S bonds [the C—S—N—N torsion angles = −56.2 (5) and −68.8 (5)°, respectively], which leads to a m

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43

Abdullah, Shaima H., Bushra A. Khairallah, and Khalid A. Al-Badrany. "Preparation and characterization of some azetidine-2-one derivatives derived from benzothiazole-2-ol and evaluation of their biological activity." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 01 (2025): 37. https://doi.org/10.59467/ijhc.2025.35.37.

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This study involves the use of hydrazones derived from 2-hydroxybenzothiazole as nucleophiles to prepare several heterocyclic azetidine derivatives by reacting the prepared hydrazone with chloroacetyl chloride. Dioxane was used as a solvent, and triethylamine was used as a catalyst. In addition to determining the melting point, the structures of the prepared compounds were confirmed by physical and spectroscopic methods, infrared, proton, and carbon nuclear magnetic resonance (1H and 13C-NMR) spectroscopy, and thin layer chromatography to track the reaction progress. The biological viability w

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44

Chumakov, Yu M., A. Yu Paholnitcaia, P. A. Petrenko, V. I. Tsapkov, D. Poirier, and A. P. Gulea. "Crystal structures of nitrato-{2-[2-(1-pyridine-2-ylethylidene)hydrazine]-1,3-benzothiazolo}aquacopper and chloro-{2-[2-phenyl(pyridine-2-ylethylidene)hydrazine]-1,3-benzothiazolo}copper." Crystallography Reports 60, no. 1 (2015): 75–82. http://dx.doi.org/10.1134/s1063774515010071.

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45

Abdullah, Ahmad H., Jalal A. Zahra, Salim S. Sabri, et al. "Thiophene Ring-opening Reactions III: One-Pot Synthesis and Antitumor Activity of 1,3,4-Thiadiazoline–Benzothiazolo[3,2-b]pyridazine Hybrids†." Current Organic Synthesis 19, no. 2 (2022): 279–90. http://dx.doi.org/10.2174/1570179418666211109112148.

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Introduction: The preparation of model 6-chloro-5-nitrothieno[2,3-c]pyridazines incorporating (2'-halo-5'-nitrophenyl) entity is described. Interaction of these substrates with N'-(aryl)benzothiohydrazides, in the presence of triethylamine, followed a formal [4+1] annulation, furnishing the respective 1,3,4-thiadiazoline–benzothiazolo [3,2-b]pyridazine hybrids directly. This one-pot synthesis implies thiophene ring-opening and two consecutive intramolecular cyclizations. The structures of the synthesized new hybrids are supported by MS, NMR, and IR spectral data and further confirmed by single

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46

Pisal, Pooja, Meenakshi Deodhar, Amol Kale, Ganesh Nigade, and Smita Pawar. "DESIGN, SYNTHESIS, DOCKING STUDIES AND BIOLOGICAL EVALUATION OF 2-PHENYL-3-(SUBSTITUTED BENZO[d] THIAZOL-2-YLAMINO)-QUINAZOLINE-4(3H)-ONE DERIVATIVES AS ANTIMICROBIAL AGENTS." International Journal of Pharmacy and Pharmaceutical Sciences 10, no. 10 (2018): 57. http://dx.doi.org/10.22159/ijpps.2018v10i10.28480.

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Objective: A new series 2-phenyl-3-(substituted benzo[d] thiazol-2-ylamino)-quinazoline-4(3H)-one was prepared by the fusion method by reacting 2-phenyl benzoxazine with 2-hydrazino benzothiazole and it was evaluated for their antimicrobial activity against gram positive, gram negative bacteria and fungi.Methods: Titled compounds were synthesized by fusion reactions. These compounds were evaluated by in vitro antibacterial and antifungal activity using the minimum inhibitory concentration and zone of inhibition methods. The synthesized compounds were characterized with the help of infrared, NM

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Gupta, Pawan, and Aleksandrs Gutcaits. "Development and Validation of a Robust QSAR Model for Benzothiazole Hydrazone Derivatives as Bcl-XL Inhibitors." Letters in Drug Design & Discovery 16, no. 1 (2018): 11–20. http://dx.doi.org/10.2174/1570180815666180502093039.

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Background: B-cell Lymphoma Extra Large (Bcl-XL) belongs to B-cell Lymphoma two (Bcl-2) family. Due to its over-expression and anti-apoptotic role in many cancers, it has been proven to be a more biologically relevant therapeutic target in anti-cancer therapy. In this study, a Quantitative Structure Activity Relationship (QSAR) modeling was performed to establish the link between structural properties and inhibitory potency of benzothiazole hydrazone derivatives against Bcl-XL. Methods: The 53 benzothiazole hydrazone derivatives have been used for model development using genetic algorithm and

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Yurttaş, Leyla, Zafer Asım Kaplancıklı, Gamze Göger, and Fatih Demirci. "Synthesis and anticandidal evaluation of new benzothiazole derivatives with hydrazone moiety." Journal of Enzyme Inhibition and Medicinal Chemistry 31, no. 5 (2015): 714–20. http://dx.doi.org/10.3109/14756366.2015.1060481.

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Sleebs, Brad E., Wilhemus J. A. Kersten, Sanji Kulasegaram, et al. "Discovery of Potent and Selective Benzothiazole Hydrazone Inhibitors of Bcl-XL." Journal of Medicinal Chemistry 56, no. 13 (2013): 5514–40. http://dx.doi.org/10.1021/jm400556w.

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50

Silin, M. A., V. I. Kelarev, N. A. Grigotyeva, and V. N. Koshelev. "ChemInform Abstract: Synthesis of Hydrazide of Benzothiazolyl-2-thioacetic Acid." ChemInform 33, no. 49 (2010): no. http://dx.doi.org/10.1002/chin.200249125.

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