期刊
TETRAHEDRON
卷 64, 期 49, 页码 11209-11217出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.09.055
关键词
Ionic liquids; Mechanism reaction; MRH reaction
资金
- MIUR [PRIN 20066034372]
- Universities of Palermo and Bologna
The reactivity of E- and Z-phenylhydrazones of 3-benzoyl-5-phenyl-1,2,4-oxadiazole in the presence of CuCl2 and Cu(ClO4)(2)center dot 6H(2)O has been Studied in four imidazolium ionic liquids [bmim][X] (X = BF4-, PF6-, SbF6- and CF3SO3-), and CF3SO3-). The reaction may follow different mechanistic patterns, depending on the nature of the ionic liquid anion, accounting for both qualitative and kinetic data. In the presence of CuCl2, two processes take place at the same time, i.e., the Et reversible arrow Z isomerization and the rearrangement of Z-isomer into the relevant 4-benzoylamino-2,5-diphenyl-1,2,3-triazole. In contrast. in the presence of Cu(ClO4)(2)center dot 6H(2)O, the rearrangement Occurs only in solution of [bmim][BF4] and [bmim][CF3SO3]. Collected data show that the effect of the ionic liquid on the isomerization and the rearrangement is different. in particular, a higher cross-linking degree seems to favour the triazole, but disfavour the E reversible arrow Z isomerization. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据