P-chiral β-aminophosphine oxides vs. β-aminophosphines as auxiliaries for ruthenium catalysed enantioselective transfer hydrogenation of arylketones
作者:Anna M. Maj、K.M. Pietrusiewicz、Isabelle Suisse、Francine Agbossou、André Mortreux*
DOI:10.1016/s0022-328x(01)00678-7
日期:2001.4
Enantiopure P-chiral β-aminophosphine oxides and the corresponding β-aminophosphines have been synthesised and used as chiral auxiliaries in rutheniumcatalysed asymmetric transfer hydrogenation of arylketones producing optically active alcohols up to 80% ee. Both types of auxiliaries provide comparable induction levels but the β-aminophosphine oxide ligands induce higher catalytic activities generally