Direct synthesis of diverse 2-aminobenzo[b]thiophenes via palladium-catalyzed carbon-sulfur bond formation using Na2S2O3 as the sulfur source.

Chuanwei Hou, Qian He, Chunhao Yang

Index: Org. Lett. 16(19) , 5040-3, (2014)

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Abstract

A novel and direct synthesis of various 2-aminobenzo[b]thiophenes has been developed. The reactions were catalyzed by a combination of Pd(dppf)Cl2 and dppf using odorless and cheap Na2S2O3 as the sulfur source. This strategy allowed us to synthesize important 2-aminobenzo[b]thiophene scaffold more efficiently and conveniently.