Organic letters

Palladium-catalyzed synthesis of 2-substituted benzothiazoles via a C− H functionalization/intramolecular C− S bond formation process

K Inamoto, C Hasegawa, K Hiroya, T Doi

Index: Inamoto, Kiyofumi; Hasegawa, Chisa; Hiroya, Kou; Doi, Takayuki Organic Letters, 2008 , vol. 10, # 22 p. 5147 - 5150

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Citation Number: 186

Abstract

Catalytic synthesis of 2-substituted benzothiazoles from thiobenzanilides was achieved in the presence of a palladium catalyst through C− H functionalization/C− S bond formation. This method features the use of a novel catalytic system consisting of 10 mol% of Pd (II), 50 mol% of Cu (I), and 2 equiv of Bu4NBr that produced variously substituted benzothiazoles in high yields with good functional group tolerance.