Deprotonation attempts on imidazolium salt tethered by substituted phenol and construction of its magnesium complex by transmetalation

被引：70

作者：

Zhang, Dao ^{[1
]}

Kawaguchi, Hiroyuki

机构：

[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

[2] Inst Mol Sci, Coordinat Chem Labs, Okazaki, Aichi 4448787, Japan

来源：

ORGANOMETALLICS | 2006年 / 25卷 / 22期

关键词：

D O I：

10.1021/om060691t

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Several attempts to deprotonate the imidizolium salt 1-methyl-3-(4,6-di-tert-butyl-2-hydroxybenzyl) imidazolium bromide, H-2[CO]Br (4), tethered by substituted phenol to yield anonic carbene species M[CO] (M = Li, Na) resulted in the formation of {Na[ON](THF)}(2) (5) and {Li[ON](THF)}(2) (6) (1-methyl- 2-(4,6-di-tert-butyl-2-hydroxybenzyl) imidazole, H[ON]) after warming to room temperature from -78 degrees C due to 1,2-aryloxy migration. Treatment of in-situ-generated M[CO] with 1.0 equiV of MesMgBr (Mes = 2,4,6- Me3C6H2) produced a rare magnesium NHC complex, {Mg[OC]( Mes)}(2) (8). Both 5 and 8 have been characterized by an X-ray diffraction study.

引用

页码：5506 / 5509

页数：4

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