Journal of the Chemical Society, Dalton Transactions p. 409 - 418 (1995)
Update date:2022-08-04
Topics:
Buisman, Godfried J. H.
Vos, Eric J.
Kamer, Paul C. J.
Leeuwen, Piet W. N. M. van
Chiral diphosphites based on (2R,3R)-butane-2,3-diol, (2R,4R)-pentane-2,4-diol, (2S,5S)-hexane-2,5-diol, (1S,3S)-diphenylpropane-1,3-diol and N-benzyltartarimide as chiral bridges have been used in the rhodium-catalysed asymmetric hydroformylation of styrene.Enantioselectivities up 76percent at 50percent conversion have been obtained with stable hydridorhodium diphosphite catalysts.High regioselectivities (>95percent) and high conversions (>99percent) to 2-phenylpropanal were found under relatively mild reaction conditions <25-40 deg C, 9 bar of CO-H2 (1:1) pressure>.The solution structures of
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