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Ru(II) complexes of N-Alkylated TsDPEN ligands in asymmetric transfer hydrogenation of ketones and imines

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Martins, Jose E. D., Clarkson, Guy J. and Wills, Martin (2009) Ru(II) complexes of N-Alkylated TsDPEN ligands in asymmetric transfer hydrogenation of ketones and imines. Organic Letters, Vol.11 (No.4). pp. 847-850. doi:10.1021/ol802801p

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Official URL: http://dx.doi.org/10.1021/ol802801p

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Abstract

N-Alkylated TsDPEN derivatives bearing a small alkyl group act as highly efficient ligands in Ru(II) complexes for the asymmetric transfer hydrogenation of imines and ketones. A larger alkyl group serves to significantly reduce the activity of the catalyst; however, high enantiomeric excesses are still obtained. An X-ray crystal structure of the N-benzyl derivative reveals a conformation that permits hydrogen transfer through a six-membered transition state. A transition state structure for the imine reduction process is proposed.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Chemistry
Library of Congress Subject Headings (LCSH): Hydrogenation, Catalysis, Ketones, Imines, Carbonyl compounds, Ruthenium
Journal or Publication Title: Organic Letters
Publisher: American Chemical Society
ISSN: 1523-7060
Official Date: 19 February 2009
Dates:
DateEvent
19 February 2009Published
Volume: Vol.11
Number: No.4
Number of Pages: 4
Page Range: pp. 847-850
DOI: 10.1021/ol802801p
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Engineering and Physical Sciences Research Council (EPSRC)
Grant number: EP/F019424/1 (EPSRC)

Data sourced from Thomson Reuters' Web of Knowledge

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