Regioselective N-alkylation of 2-aminobenzothiazoles with benzylic alcohols
作者:Feng Li、Haixia Shan、Qikai Kang、Lin Chen
DOI:10.1039/c1cc10604j
日期:——
The preparation of 2-(N-alkylamino)benzothiazoles via regioselecive N-alkylation of 2-aminobenzothiazoles has been accomplished by using benzylic alcohols as alkylating agents.
An efficient copper-catalyzed method for the synthesis of a variety of 2-aminobenzothiazoles has been developed. The reaction proceeded from carbodiimide and sodium hydrosulfide via a tandem reaction in the presence of copper(II) trifluoromethanesulfonate to afford the corresponding 2-aminobenzothiazole derivatives in good to perfect yields.