Hydrovinylation and [2+2] cycloaddition reactions of alkynes and alkenes catalyzed by a well-defined cationic ruthenium-alkylidene complex

被引：136

作者：

Yi, CS ^{[1
]}

Lee, DW ^{[1
]}

Chen, YZ ^{[1
]}

机构：

[1] Marquette Univ, Dept Chem, Milwaukee, WI 53201 USA

来源：

ORGANOMETALLICS | 1999年 / 18卷 / 11期

关键词：

D O I：

10.1021/om990129l

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The cationic ruthenium-alkylidene complex [(PCy3)(2)(CO)(Cl)Ru=CHCH=C(CH3)(2)]+BF4- (1) was found to catalyze both hydrovinylation and [2+2] cycloaddition reactions of alkynes and alkenes. The reaction of R'C=CR" (R' = H, Ph, n-Pr; R" = Ph, n-Pr, p-Tol, SiEt3, CH2CH2OH) with ethylene in the presence of 1 (3 mol %) produced the hydrovinylation products 2 and 3. The analogous reaction of dimethyl acetylenedicarboxylate (R' = R" = CO2Me) with ethylene and norbornene resulted in the formation of the [2+2] cycloaddition products 4. Based on the experimental evidence, a plausible mechanism of the hydrovinylation, reaction has been proposed via a sequential insertion of alkyne and ethylene to the hydride complex 7.

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页码：2043 / 2045

页数：3

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