19993-97-6

Upstream product

• 615-20-3 2-chlorobenzo[d][1,3]thiazole 
• 3290-99-1 4-methoxybenzoic acid hydrazide 
• 5347-22-8 2-[2-(4-methoxybenzylidene)hydrazino]-1,3-benzothiazole 
• 193738-04-4 4-(2-Chloro-phenyl)-5-(4-methoxy-phenyl)-2,4-dihydro-[1,2,4]triazole-3-thione 
• 2740-81-0 2-chlorophenylisothiocyanate 
• 149-30-4 2-Mercaptobenzothiazole 
• 615-21-4 1,3-benzothiazol-2-ylhydrazine 
• 123-11-5 4-methoxy-benzaldehyde 
• 13037-60-0 1-bromo-2-isothiocyanatobenzene 
• 615-36-1 2-bromoaniline 

Relevant academic research and scientific papers

Convenient synthesis of benzo[4,5]thiazolo[2,3-c][1,2,4]triazoles with 1 mol% CuCl2·2H2O as catalyst in water

A convenient and efficient procedure for the synthesis of benzo[4,5]thiazolo [2,3-c][1,2,4]triazoles has been developed via a tandem intermolecular C-N bond and intramolecular C-S bond formation sequence from o-bromo-arylisothiocyanates and aroylhydrazides. A series of benzo[4,5]thiazolo[2,3-c][1,2,4]triazoles were provided in excellent overall yields with 1 mol% CuCl2·2H2O/1 mol% 1,10-phenanthroline as the catalyst and water as the solvent. This journal is

Study of oxidative cyclization using PhI(OAc)2 in the formation of benzo[4,5]thiazolo[2,3- C ][1,2,4]triazoles and related heterocycles - Scope and limitations

A one-pot, two-step reaction for the synthesis of benzo[4,5]thiazolo[2,3-c] [1,2,4]triazoles and related heterocycles under mild conditions was herein developed. The key step of this transformation is an oxidative cyclization employing PhI(OAc)2/sub

Synthesis of new triazolo and pyrazolo benzothiazoles

Benzothiazole-2-thiol 1 on heating with excess of hydrazine hydrate yields 2-hydrazino-1,3-benzothiazole (2). Compound 2 on reaction with carbon disulfide in alkaline medium affords [1,2,4] triazolo [3,4-b] [1,3] benzothiazole-3-thiol (3). Condensation of 2 with various substituted aryl aldehydes yields corresponding hydrazine derivatives (4), which on cyclisation with acetic anhydride gave corresponding [1,2,4] triazolo [3,4-6] [1,3] benzothiazoles (5). Some other triazolo derivatives (6,7,8) of benzothiazole were obtained by the cyclization of 2 with benzoyl chloride, acetyl chloride and formic acid respectively. Again compound 2 on condensation with acetyl acetone and ethylacetoacetate gives pyrazolo derivatives (9,10) respectively. The synthesized compounds were characterized by elemental and spectral analysis.

Photochemical synthesis of s-triazolo[3,4-b]benzothiazole and mechanistic studies on benzothiazole formation

A general photochemical synthesis of s-triazolo[3,4-b]benzothizoles from 4,5-disubstituted 1,2,4-triazole-3-thione is described. Steady photolysis, quantum yield determination, and laser flash photolysis experiments have been carried out. An intermolecular electron transfer mechanism has been proposed.

Thallium(III) salts mediated oxidative cyclization of arenecarbaldehyde benzothiazol-2-ylhydrazones to bridged head nitrogen heterocycles

Oxidation of arenecarbaldehydebenzothiazol-2-ylhydrazones (4) with thallium (III) acetate in refluxing acetic acid, thallium (III) acetate and thallium (III) nitrate in acetonitrile in presence of p-toluene sulphonic acid afforded 3-aryl-1,2,4-triazolo [3