Efficient sulfonation of 1-phenylsulfonyl-1H-pyrroles and 1-phenylsulfonyl-1H-indoles using chlorosulfonic acid in acetonitrile

…, N Wahlström, I Malky, B Stensland, J Bergman

Index: Janosik, Tomasz; Shirani, Hamid; Wahlstroem, Niklas; Malky, Ilham; Stensland, Birgitta; Bergman, Jan Tetrahedron, 2006 , vol. 62, # 8 p. 1699 - 1707

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Citation Number: 21

Abstract

The sulfonation of various 1-phenylsulfonyl-1H-pyrroles and 1-phenylsulfonyl-1H-indoles using chlorosulfonic acid in acetonitrile has been studied, leading to the development of a clean and operationally simple protocol allowing direct synthesis of the corresponding 1- phenylsulfonyl-1H-pyrrole-3-sulfonyl chlorides and 1-phenylsulfonyl-1H-indole-3-sulfonyl chlorides, respectively, both of which may be easily converted to various sulfonamide ...