Why Are (NN2)Ni Pincer Complexes Active for Alkyl-Alkyl Coupling: β-H Elimination Is Kinetically Accessible but Thermodynamically Uphill

被引：75

作者：

Breitenfeld, Jan ^{[1
]}

Vechorkin, Oleg ^{[1
]}

Corminboeuf, Clemence ^{[1
]}

Scopelliti, Rosario ^{[1
]}

Hu, Xile ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, SB ISIC, CH-1015 Lausanne, Switzerland

来源：

ORGANOMETALLICS | 2010年 / 29卷 / 17期

基金：

瑞士国家科学基金会;

关键词：

CATALYZED CROSS-COUPLINGS; GRIGNARD-REAGENTS; HYDRIDE COMPLEXES; NICKEL-COMPLEXES; HALIDES; BROMIDES; IODIDES; LIGAND; NI; HYDROSILYLATION;

D O I：

10.1021/om1007506

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Isomerization and olefin exchange experiments show that beta-H elimination is kinetically viable but thermodynamically unfavorable in[((Me) NN2)Ni-alkyl] complexes. The intermediacy of Ni-hydride species was corroborated by a trapping experiment. The alkyl complex [((NN2)-N-Me)Ni-propyl] catalyzes olefin isomerization.

引用

页码：3686 / 3689

页数：4

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