Eco-friendly solvent-free synthesis of thiazolylpyrazole derivatives
作者:Samir Bondock、Hossam El-Azap、Ez-Eldin M. Kandeel、Mohamed A. Metwally
DOI:10.1007/s00706-008-0930-4
日期:2008.11
corresponding ethyl 3-[(4-phenyl-2-thiazolyl)hydrazono]butanoate which underwent heterocyclization by heating in ethanolic sodium acetate to give thiazolylpyrazolone that coupled chemoselectively with aromaticdiazoniumsalts to furnish arylhydrazonothiazolylpyrazoles. Vilsmeier-Haack reaction of ethyl 3-thiosemicarbazidobutanoate furnished selectively thiazolylpyrazole. A series of pyrazolylthiosemicarbazones
α,α‐Dibromoketone precursors in the synthesis of some new thiazole derivatives: Thiazol‐2‐yl hydrazonobutanoates, thiazol‐2‐yl pyrazole‐4‐carboxylates and acids
作者:Vijay Kiran、Radhika Joshi、Rashmi Pundeer
DOI:10.1002/jhet.3937
日期:2020.5
precursors for the facile synthesis of several new hydrazonothiazoles, ethyl 3‐((4‐arylthiazol‐2‐yl)hydrazono)butanoates, which undergo Vilsmeier‐Haack cyclization to obtain thiazolylpyrazole esters, ethyl 3‐methyl‐1‐(4‐arylthiazol‐2‐yl)‐1H‐pyrazole‐4‐carbxylates, basic hydrolysis of which gives the corresponding acids, 3‐methyl‐1‐(4‐arylthiazol‐2‐yl)‐1H‐pyrazole‐4‐carbxylic acids. All these compounds are
An investigation of the biological effect of structural modifications of isothiosemicarbazones and their cyclic analogues
作者:E Maccioni、M.C Cardia、S Distinto、L Bonsignore、A De Logu
DOI:10.1016/s0014-827x(03)00154-x
日期:2003.9
Several arylideneisothiosemicarbazones and arylidenehydrazothiazoles have been synthesised to obtain new antimicrobial agents. Their activity against both bacteria and fungi has been tested and some interesting informations about their biological activity have been obtained.
Singh, S. P.; Sehgal, Subhash; Diwakar, P., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, p. 573 - 575
作者:Singh, S. P.、Sehgal, Subhash、Diwakar, P.、Vaid, R. K.
DOI:——
日期:——
Dehuri, S. N.; Pradhan, P. C.; Nayak, A., Journal of the Indian Chemical Society, 1983, vol. 60, p. 475 - 478