Highly stereoselective formation of cis-enediones from alpha-diazo carbonyl compounds catalysed by [RuCl(eta(5)-C5H5)(PPh3)(2)]

被引：74

作者：

Baratta, W ^{[1
]}

Del Zotto, A ^{[1
]}

Rigo, P ^{[1
]}

机构：

[1] UNIV UDINE, DIPARTIMENTO SCI & TECN CHIM, I-33100 UDINE, ITALY

来源：

CHEMICAL COMMUNICATIONS | 1997年 / 22期

关键词：

D O I：

10.1039/a706459d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Stereoselective decomposition of the a-diazo carbonyl compounds N2CHCOR [R = Me, Pr-n, Pr-i, (CH2)(10)CH3] catalysed by [RuCl(eta(5)-C5H5)(PPh3)(2)] (0.1 mol%) in toluene at 65 degrees C affords quantitatively RCOCH=CHCOR carbene dimers, the cis isomers being formed in 95-97% yield; under the same experimental conditions N2CHCOEt gives diethyl maleate in a purity of greater than 99%, the highest value for a stereoselective carbene-carbene dimer formation reported to date.

引用

页码：2163 / 2164

页数：2

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