Tertiary amine functionalized polyacrylonitrile fiber catalyst for the synthesis of tetrahydrothiophenes

C Xu, J Du, L Ma, G Li, M Tao, W Zhang

Index: Xu, Changzhu; Du, Jianguo; Ma, Lichao; Li, Guowei; Tao, Minli; Zhang, Wenqin Tetrahedron, 2013 , vol. 69, # 23 p. 4749 - 4757

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Citation Number: 19

Abstract

A tertiary amine immobilized fiber was prepared and used to efficiently catalyze tandem Michael–intramolecular Henry reactions between 1, 4-dithiane-2, 5-diol and trans-β- nitrostyrenes to form the corresponding tetrahydrothiophene derivatives. This newly developed fiber catalyst is applicable to a wide range of trans-β-nitroalkenes and affords good to excellent yields (75–93%) under mild conditions (with 2.5 mol% fiber catalyst at ...