Journal of Fluorine Chemistry

Recyclable hafnium (IV) bis (perfluorooctanesulfonyl) amide complex for catalytic Friedel–Crafts acylation and Prins reaction in fluorous biphase system

X Hao, A Yoshida, N Hoshi

Index: Hao, Xiuhua; Yoshida, Akihiro; Hoshi, Nobuto Journal of Fluorine Chemistry, 2007 , vol. 128, # 11 p. 1396 - 1401

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Citation Number: 16

Abstract

In fluorous biphase system, hafnium (IV) bis (perfluorooctanesulfonyl) amide complex (Hf [N (SO2C8F17) 2] 4) was found to be a highly reactive and recyclable Lewis acid catalyst for Friedel–Crafts acylation and Prins reaction at significantly low catalyst loadings (≤ 1mol%). In these reactions, Hf [N (SO2C8F17) 2] 4 is selectively soluble in the lower fluorous phase and can be recovered simply by phase separation. Furthermore, the catalyst can be ...