A novel hypervalent iodine reagent prepared from o-iodosylbenzoic acid and trifluoromethanesulfonic acid preparation and reactions of alkynyl (o-carboxyphenyl) …

T Kitamura, K Nagata, H Taniguchi

Index: Kitamura, Tsugio; Nagata, Kensuke; Taniguchi, Hiroshi Tetrahedron Letters, 1995 , vol. 36, # 7 p. 1081 - 1084

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Citation Number: 30

Abstract

A hyervalent iodine reagent prepared from o-iodosylbenzoic acid and trifluoromethanesulfonic acid (TfOH)(1: 2) showed a high reactivity toward aromatic substrates, giving aryl (o-carboxyphenyl) iodonium triflates in good to high yields. Treatment of the iodine reagent with 1-trimethylsilylalkynes afforded alkynyliodonium triflates bearing carboxy group in high yields. The alkynyliodonium triflates indicated a high efficiency as a ...