A. Marinetti, S. Jus, J. Genêt
Apr 1, 2001
Citations
0
Influential Citations
10
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Optically pure 1,2-bis(phosphetano)ethanes 3 (BPE-4) have been prepared from 1,2-bis(phosphino)ethane and the cyclic sulfates of symmetrical anti -1,3-diols. Diphosphine 3c (R=cyclohexyl) is an easily accessible, air-stable chiral ligand. Its suitability to the ruthenium-catalysed hydrogenation of functionalised ketones has been examined by using several catalyst precursors. Significant enantiomeric excesses were obtained. A ruthenium complex containing two coordinated diphosphines 3c was characterised by X-ray diffraction studies.