19993-96-5

Upstream product

• 615-20-3 2-chlorobenzo[d][1,3]thiazole 
• 613-94-5 benzoic acid hydrazide 
• 16586-67-7 benzaldehyde 2-benzothiazolylhydrazone 
• 37120-60-8 N'-benzothiazol-2-yl-benzohydrazonoyl bromide 
• 92161-94-9 4-(2-chlorophenyl)-5-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione 
• 100-52-7 benzaldehyde 
• 149-30-4 2-Mercaptobenzothiazole 
• 615-21-4 1,3-benzothiazol-2-ylhydrazine 
• 13037-60-0 1-bromo-2-isothiocyanatobenzene 
• 33119-96-9 N-Benzoyl-N'-(2-benzothiazolyl)hydrazine 
• 98-88-4 benzoyl chloride 
• 2740-81-0 2-chlorophenylisothiocyanate 

Relevant academic research and scientific papers

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.

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.

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