Formation and rearrangement of gem-dilithiodiphenylethene

被引:5
作者
Maercker, A [1 ]
Bos, B [1 ]
Hajgholipour, MT [1 ]
机构
[1] Univ Siegen, Inst Organ Chem, D-57068 Siegen, Germany
关键词
rearrangement; lithiumorganic compounds; gem-dilithioalkenes; lithiation; quasi dianion complexes;
D O I
10.1016/S0022-328X(98)00568-3
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
1,1-Dilithio-2,2-diphenylethene (14) is accessible through double bromine lithium exchange reaction starting from 1,1-dibromo-2,2-diphenylethene (5) with lithium metal at -110 degrees C. 14 undergoes rearrangement into (E)-1-lithio-2-(2-lithiophenyl)-2-phenylethene (13) at temperatures above -100 degrees C. The (Z)-compound 15 was formed from the (E)-compound 13 at temperatures above -25 degrees C. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:143 / 149
页数:7
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