MECHANISM OF ELECTROPHILIC SUBSTITUTION WITH PARTICIPATION OF ION-PAIRS IN ORGANOMETALLIC CHEMISTRY (SE2 ION-PAIR MECHANISM)

被引:20
作者
BELETSKAYA, IP
KASHIN, AN
REUTOV, OA
机构
[1] Physical Organic Laboratory, Chemical Department, University of Moscow, Moscow
关键词
D O I
10.1016/S0022-328X(00)90418-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A new mechanism SE2 ion pair) has been suggested for the reaction of organotin compounds with electron-withdrawing groups (R = 9-Me-fluorenyl, indenyl, PhCC etc.). It has been shown that some RSnMe3 compounds may undergo ionization or dissociation in polar solvents. In low-polar solvents optically active indenyl derivatives of tin racemize slowly but the rate of racemization is increased by addition of hexamethylphosphoric triamide. This result was explained by the loss of configuration when the ion pair R-Sn+Me3 reverts to the covalent form. © 1978.
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页码:31 / 38
页数:8
相关论文
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