Electrophilic catalysis in nucleophilic substitution reactions in ionic liquids

被引：4

作者：

Cavazza, M ^{[1
]}

Pietra, F ^{[1
]}

机构：

[1] Univ Pisa, Dipartimento Chim & Chim Ind, I-56100 Pisa, Italy

来源：

TETRAHEDRON LETTERS | 2004年 / 45卷 / 18期

关键词：

D O I：

10.1016/j.tetlet.2004.03.050

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

2-Chlorotropone was obtained from 2-tosyloxytropone in 88% yield in the recyclable ionic medium BMIMBF4/LiCl. That Li+ acts as a Lewis acid was proven by the lack of reactivity of 2-tosyloxytropone, under the above conditions, on replacing LiCl with NaCl or BMIMCl, or using BMIMCl alone, or a BMIMBF4/MeCN/KCl mixture. 2-Bromo- and 2-iodotropone were obtained along similar lines from LiBr or LiI, respectively, whereas LiF proved unreactive. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：3633 / 3634

页数：2

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