Ruthenium(II) Picolyl-NHC Complexes: Synthesis, Characterization, and Catalytic Activity in Amine N-alkylation and Transfer Hydrogenation Reactions

被引：129

作者：

Fernandez, Francys E. ^{[1
]}

Carmen Puerta, M. ^{[1
]}

Valerga, Pedro ^{[1
]}

机构：

[1] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat & Ingn Met & Quim Inorgan, Cadiz 11510, Spain

来源：

ORGANOMETALLICS | 2012年 / 31卷 / 19期

关键词：

HETEROCYCLIC-CARBENE COMPLEXES; C-H ACTIVATION; EFFICIENT CATALYSTS; NICKEL(II) COMPLEXES; POLYMERIZATION BEHAVIOR; RHODIUM(I) COMPLEXES; PALLADIUM COMPLEXES; BORROWING HYDROGEN; IRIDIUM COMPLEXES; RU(II) COMPLEXES;

D O I：

10.1021/om300692a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Ruthenium(II) p-cymene complexes with picolyl-functionalized N-heterocyclic carbenes [(eta(6)-p-cymene)Ru(L)(Cl)]-[PF6] (L = 3-methyl-1-(2-picolyl)imidazol-2-ylidene (1a), 3-isopropyl-1-(2-picolyl)imidazol-2-ylidene (1b), 3,4,5-trimethyl-1-(2-picoly)imidazol-2-ylidene (1c), 3-mesityl-1-(2-picolyl)imidazol-2-ylidene (1d), 3-methyl-1-(2-picolyl)benzoimidazol-2-ylidene (1f), 3-methyl-1-(2-picolyl)-4,5-dichloroimidazol-2-ylidene (1f), 3-phenyl-1-(2-picolyl)imidazol-2-ylidene (1g)) have been synthesized and characterized. Compounds 1 a-g were recrystallized, and X-ray crystal structures are reported for 1a,f. Furthermore, compounds 1a-f show catalytic activity in transfer hydrogenation of ketones and N-alkylation of amines. Notably, complexes 1a,c,f were found to be very efficient and versatile catalysts toward transfer hydrogenation of a wide range of ketones and imines in addition to N-alkylation of several amines.

引用

页码：6868 / 6879

页数：12

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