Insertion of phenylacetylene into [Pt(GeMe3)(SnMe3)(PMe2Ph)2]

被引：7

作者：

Sagawa, T

Tanaka, R

Ozawa, F ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Int Res Ctr Elements Sci, Kyoto 6110011, Japan

[2] Osaka City Univ, Grad Sch Engn, Dept Appl Chem, Sumiyoshi Ku, Osaka 5588585, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2004年 / 77卷 / 07期

关键词：

D O I：

10.1246/bcsj.77.1287

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of Me3GeSnMe3 with a platinum(0) complex, in situ generated from [Pt(cod)(2)] (cod = 1,5-cyclooctadiene) and 2 molar quantity of PMe2Ph in Et2O, formed a cis-trans mixture of [Pt(GeMe3)(SnMe3)(PMe2Ph)(2)] (1). Recrystallization of crude 1 from CH2Cl2-pentane gave pure cis-1, while the isolated cis isomer was again converted to an equilibrium mixture (cis:trans = 8:2) in solution. The cis-trans mixture of 1 underwent competitive insertion of phenylacetylene into Pt-Sn and Pt-Ge bonds to give cis-[Pt(GeMe3){C(Ph)=CH(SnMe3)}(PMe2Ph)(2)] (2a) and cis-[Pt{C(Ph)=CH(GeMe3)}(SnMe3)(PMe2Ph)(2)](3a), respectively, in a ratio of 80:20, while 2a was thermodynamically less stable, and converted to 3a in solution. The insertion mechanism was examined by kinetic investigations.

引用

页码：1287 / 1295

页数：9

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