Hydroformylation activity of multinuclear rhodium complexes coordinated to dendritic iminopyridyl and iminophosphine scaffolds

被引：20

作者：

Antonels, Nathan C. ^{[1
]}

Moss, John R. ^{[1
]}

Smith, Gregory S. ^{[1
]}

机构：

[1] Univ Cape Town, Dept Chem, ZA-7701 Rondebosch, South Africa

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2011年 / 696卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

Rhodium; Hydroformylation; Poly(propyleneimine); Metallodendrimers; Iminophosphine; Iminopyridyl; FUNCTIONALIZED CARBOSILANE DENDRIMERS; POLYMER-SUPPORTED CATALYSIS; FLOW MEMBRANE REACTOR; PALLADIUM COMPLEXES; NICKEL-CATALYSTS; RECENT PROGRESS; HYDROGENATION; SILICA;

D O I：

10.1016/j.jorganchem.2010.10.048

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis of poly(propyleneimine)-iminopyridyl and iminophosphine rhodium(I) metallodendrimers, with rhodium coordinated to monodentate (N-donor) and chelating, heterobidentate (P,N) moieties respectively located on the periphery, has been accomplished in order to evaluate their potential as hydroformylation catalysts. Related mononuclear complexes were obtained in a similar manner to model the multinuclear complexes. The multinuclear rhodium(I) complexes were found to be effective catalyst precursors in the hydroformylation of 1-octene, achieving higher conversions, faster reaction rates and slightly enhanced catalytic activity when compared with analogous mononuclear rhodium complexes. Hydroformylation reactions using the tetra-and octanuclear rhodium complexes generally show a chemoselective formation of aldehydes, together with a small amount of isomerisation products. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2003 / 2007

页数：5

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