The stable silylene Si[(NCH2tBu)2C6H4-1,2]:: insertion into Li-C or Li-Si bonds of lithium alkyls LiR or [LiSi(SiMe3)3(THF)3] [R = Me, tBu or CH(SiMe3)2]

被引：8

作者：

Cai, XP ^{[1
]}

Gehrhus, B ^{[1
]}

Hitchcock, PB ^{[1
]}

Lappert, MF ^{[1
]}

Slootweg, JC ^{[1
]}

机构：

[1] Univ Sussex, Chem Lab, Brighton BN1 9QJ, E Sussex, England

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 643卷

基金：

英国工程与自然科学研究理事会;

关键词：

amino-functionalised silyl anions; lithium; alkyls; sisyls;

D O I：

10.1016/S0022-328X(01)01273-6

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new crystalline amino-functionalised lithium silyls Li[Si{(NCH2'Bu)(2)C6H4-1,2}R](L) [R = Si(SiMe3)(3) (sisyl), L = (THF)(2) (2); R = Me, L = (OEt2)(2) (3); R = 'Bu, L = (THF)(3) (4a) or THF(OEt2) (4b); R = CH(SiMe3)(2), L = (THF)(2) (5)] have been obtained in high yield from the silylene Si[(NCH2'Bu)(2)C6H4-1,2] and Li-R under mild conditions. A by-product in the reaction leading to 4 was the crystalline disilane [1,2-C6H4(NCH2'Bu)(2)('Bu)Si](2) (6). Each of 2-6 was fully characterised by microanalysis, multinuclear NMR spectra and X-ray structures. Each of the compounds 3-6 was thermally stable in solution. whereas the sisyl derivative 2 retained its integrity only at low temperatures, being completely dissociated into its factors at ambient temperature. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：272 / 277

页数：6

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