A new approach to the synthesis of unsymmetrical disilenes and germasilene:: Unusual 29Si NMR chemical shifts and regiospecific methanol addition

被引：75

作者：

Ichinohe, M

Arai, Y

Sekiguchi, A ^{[1
]}

Takagi, N

Nagase, S

机构：

[1] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

[2] Inst Mol Sci, Dept Theoret Studies, Okazaki, Aichi 4448585, Japan

来源：

ORGANOMETALLICS | 2001年 / 20卷 / 20期

关键词：

D O I：

10.1021/om010419d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of dilithiosilanes ((Pr3Si)-Pr-i)(2)SiLi2 (1a) and ((Bu2MeSi)-Bu-t)2SiLi2 (1b) with diaryldichlorosilanes [Ar2SiCl2, Ar = Mes (2,4,6-trimethylphenyl) and Tip (2,4,6-triisopropylphenyl)] quantitatively produced the corresponding unsymmetrical 1,1-diaryl-2,2-bis(trialkylsilyl)disilenes, Ar2Si=Si(SiR3)(2) (2, R3Si = (Pr3Si)-Pr-i; 3, R3Si = (Bu2MeSi)-Bu-t). A stable germasilene, Mes(2)Ge = Si((SiMeBu2)-Bu-t)(2) (4), was also synthesized by the reaction of lb with dimesityldichlorogermane. These compounds reveal unusual Si-29 NMR shifts and regioselective methanol additions.

引用

页码：4141 / 4143

页数：3

共 35 条

[1] THERMOLYSIS OF HEXAMESITYLSILADIGERMIRANE OR HEXAMESITYLCYCLOTRIGERMANE IN THE PRESENCE OF 2,3-DIMETHYLBUTADIENE OR WATER [J].