Issue 39, 2009
From the journal:

Dalton Transactions

Aminophosphine ligands R2P(CH2)nNH2 and ruthenium hydrogenation catalysts RuCl2(R2P(CH2)nNH2)2†

Wenli Jia,*a   Xuanhua Chen,a   Rongwei Guo,a   Christine Sui-Seng,a   Dino Amoroso,a   Alan J. Loughb  and  Kamaluddin Abdur-Rashid*a  

* Corresponding authors

a Kanata Chemical Technologies Inc., 101 College Street, Office 230, MaRS Centre, South Tower, Toronto, Canada
E-mail: kamal@kctchem.com
Web: http://kctchem.com/

b Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Canada

Abstract

The aminophosphine ligands R2P(CH2)2NH2 and R2P(CH2)3NH2 (R = Ph, iPr, tBu) were isolated in good to excellent yields from the reaction of LiPR2 with Cl(CH2)2N(TMS)2 and Cl(CH2)3N(TMS)2, respectively, followed by hydrolysis. This approach allows fine tuning of the ligands' stereoelectronic properties through the variation of the substituents on the phosphine. The aminophosphine ligands were used to prepare the ruthenium complexes RuCl2(R2P(CH2)2NH2)2 and RuCl2(R2P(CH2)3NH2)2 by reacting a 2:1 mixture of the respective ligand and [RuCl2(cod)]n in an appropriate solvent. The resulting complexes were found to be excellent catalysts for the hydrogenation of ketones and imines.

Graphical abstract: Aminophosphine ligands R2P(CH2)nNH2 and ruthenium hydrogenation catalysts RuCl2(R2P(CH2)nNH2)2

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Article information

DOI
https://doi.org/10.1039/B911459A
Article type
Paper
Submitted
11 Jun 2009
Accepted
15 Jul 2009
First published
12 Aug 2009

Dalton Trans., 2009, 8301-8307

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Aminophosphine ligands R2P(CH2)nNH2 and ruthenium hydrogenation catalysts RuCl2(R2P(CH2)nNH2)2

W. Jia, X. Chen, R. Guo, C. Sui-Seng, D. Amoroso, A. J. Lough and K. Abdur-Rashid, Dalton Trans., 2009, 8301 DOI: 10.1039/B911459A

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