Reaction of (Me<sub>3</sub>Si)<sub>2</sub>C(SiMe<sub>2</sub>Ph)(SiEt<sub>2</sub>I) with AgBF<sub>4</sub>. 1,3-Migration of the phenyl group
作者:Colin Eaborn、Paul D. Lickiss、Sabah T. Najim、Włodzimierz A. Stańczyk
DOI:10.1039/p29930000059
日期:——
(Me3Si)2C(SiMe2Ph)(SiEt2I) with AgBF4 in Et2O has been shown to give a ca. 2:3 ratio of the unrearranged (Me3Si)2C (SiMe2Ph)(SiEt2F) and the rearranged (Me3Si)2C (SiEt2Ph)(SiMe2F). The reaction is thought to proceed via a cation, II, in which there is a 1,3-phenyl bridge between silicon atoms. Reaction of the organolithium reagent (Me3Si)2C(SiMe2Ph)Li, R′Li, with Me2SiHCl, Et2SiHCl, Et2SiF2 and Et2SiCl2 gives the products
已显示(Me 3 Si)2 C(SiMe 2 Ph)(SiEt 2 I)与AgBF 4在Et 2 O中的反应得到大约1 。未重排的(Me 3 Si)2 C(SiMe 2 Ph)(SiEt 2 F)与重排的(Me 3 Si)2 C(SiEt 2 Ph)(SiMe 2 F)之比为2:3 。该反应被认为是通过阳离子II进行的,其中在硅原子之间存在1,3-苯基桥。有机锂试剂(Me 3 Si)2的反应C(SiMe 2 Ph)Li,R'Li和Me 2 SiHCl,Et 2 SiHCl,Et 2 SiF 2和Et 2 SiCl 2产生产物R'SiMe 2 H,R'SiEt 2 H,R'SiEt 2 F和R'SiEt 2 Cl。