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Ruthenium complexes of six-electron-donor NUPHOS-Type diphosphines: Highly selective catalysts for the hydrocarboxylation of terminal alkynes

Lookup NU author(s): Dr Simon Doherty, Dr Julian Knight, Dr Rakesh Rath, Emeritus Professor Bill Clegg, Dr Ross Harrington, Dr Rachel Campbell, Hirenkumar Amin

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Abstract

The ruthenium-p-cymene complexes [p-cymene)Ru(1,2,3,4-Me 4-NUPHOS)Cl][SbF6] and [(p-cymene)Ru(1,4-Et 2-2,3-cyclo-C6H8-NUPHO S)Cl][SbF6] were prepared by reaction of [(p-cymene)RuCl2]2 with the corresponding NUPHOS diphosphine in the presence of NaSbF6. The crystal structures of these complexes were determined by single-crystal X-ray crystallography. The highly regio- and stereoselective addition of benzoic acid to phenylacetylene using catalysts based on NUPHOS was studied. The higher cis-to-trans ratios for anti-Markovnikov addition of benzoic acid to terminal alkynes with NUPHOS-based catalysts compared with their biaryl-based counterparts.


Publication metadata

Author(s): Doherty S, Knight JG, Rath RK, Clegg W, Harrington RW, Newman CR, Campbell R, Amin H

Publication type: Article

Publication status: Published

Journal: Organometallics

Year: 2005

Volume: 24

Issue: 11

Pages: 2633-2644

ISSN (print): 0276-7333

ISSN (electronic): 1520-6041

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/om050014j

DOI: 10.1021/om050014j


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