ChemInform Abstract: Heterocyclization of 2‐Allylthiobenzimidazoles Under the Action of Bromine.

Abstract

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Synthesis of 2-Mercaptobenzimidazole and Some of its Derivatives

“…Alkylation of 2-mercaptobenzimidazole [1] under basic condition using different alkyl halides and aryl halide gave the thioethor derivatives [2][3][4][5][6][7][8]. As is shown below.…”

“…It possesses other chemical names such as, o-phenylen thiourea, benzimidazol-2-thion with formula of C7H6N2S. [1,2] Some characteristic of 2-mercaptobenzimid-azole are containing of thioamide group (-N-C=S), therefore it is considered one of thioamide compounds for its ability to react under special conditions to give derivatives having substituent at either nitrogen or sulfur atoms [3,4] , 2-mercaptobenzimi-dazole possess the form dimer, because it has (C=S) group, this preferable product is the dimer [5] , it is known to exist in two tautomerism forms , the thiol and thione from as represented below [6,7] .…”