In Situ Generated Cobalt Catalyst for the Dehydrogenative Coupling of Alcohols and Amines into Imines

被引：22

作者：

Bottaro, Fabrizio ^{[1
]}

Madsen, Robert ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

来源：

CHEMCATCHEM | 2019年 / 11卷 / 11期

关键词：

Alcohols; Cobalt; Dehydrogenation; Imines; Homogeneous catalysis; TRANSFER HYDROGENATION; REVERSIBLE DEHYDROGENATION; AROMATIC-AMINES; IRON CATALYSTS; ACCEPTOR LESS; DIRECT ACCESS; N-ALKYLATION; COMPLEXES; KETONES; SECONDARY;

D O I：

10.1002/cctc.201900392

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An in situ formed cobalt catalyst is developed from cobalt(II)bromide, bis[2-(diisopropylphosphino)-4-methylphenyl]amine and zinc metal. The catalyst mediates the acceptorless dehydrogenative coupling of alcohols and amines into imines with the release of hydrogen gas and the transformation is applied to the synthesis of a variety of imines from different alcohols and amines. The mechanism is investigated with labelled substrates and based on the results a cobalt(I) PNP complex is believed to be the catalytically active species which abstracts hydrogen gas from the alcohol through a metal ligand bifunctional pathway.

引用

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页码：2707 / 2712

页数：6

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