Transfer semihydrogenation of alkynes catalyzed by a zero-valent palladium N-heterocyclic carbene complex

被引：156

作者：

Hauwert, Peter ^{[1
]}

Maestri, Giovanni ^{[2
]}

Sprengers, Jeroen W. ^{[1
]}

Catellani, Marta ^{[2
]}

Elsevier, Cornelis J. ^{[1
]}

机构：

[1] Univ Amsterdam, Vant Hoff Inst Mol Sci, NL-1018 WV Amsterdam, Netherlands

[2] Univ Parma, Dipartimento Chim Organ & Ind, I-43100 Parma, Italy

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 17期

关键词：

alkynes; carbene ligands; hydrogen transfer; hydrogenation; palladium;

D O I：

10.1002/anie.200705638

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Chemical Equation Presented) Beyond Lindlar and without hydrogen: Transfer hydrogenation of internal alkynes catalyzed by a palladium(0) catalyst containing an N-heterocyclic carbene ligand gives Z alkenes without over-reduction to alkanes (see scheme). Contrary to most transfer hydrogenations, ketones are not reduced. As such, this is the first catalyst that shows excellent stereo- and chemo-selectivity for the semihydrogenation of alkynes without the need for hydrogen gas. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：3223 / 3226

页数：4

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