Unexpected “reverse” cyclization of 2-mercaptobenzimidazole with chlorotrifluoroethylene and hexafluoropropene
作者:Kirill I. Petko、Yurii G. Vlasenko、Oleksii D. Kachkovskii
DOI:10.1016/j.jfluchem.2016.03.006
日期:2016.5
The unusual cyclization mode of 2-mercaptobenzimidazole with chlorotrifluoroethylene and hexafluoropropene has been found. Such unexpected products as 2-chloro-2,3,3-trifluoro-2,3-dihydrobenzimidazo[4,5b]thiazole-1,3 and 2-trifluoromethyl-2,3,3-trifluoro-2,3-dihydrobenzimidazo[4,5b]thiazole-1,3 were isolated. The structures of obtained compounds were supported by single crystal X-ray diffraction analysis
已经发现2-巯基苯并咪唑与三氟氯乙烯和六氟丙烯的异常环化模式。出乎意料的产物如2-氯-2,3,3,3-三氟-2,3-二氢苯并咪唑并[4,5b]噻唑-1,3和2-三氟甲基-2,3,3-三氟-2,3-二氢苯并咪唑并[分离出4,5b]噻唑-1,3。通过单晶X射线衍射分析证实了所得化合物的结构,并提出了可能的反应路线。