A. Marinetti et al., Chiral 1,2-bis(phosphetano)benzenes: Preparation and use in the Ru-catalyzed hydrogenations of carbonyl derivatives, CHEM-EUR J, 5(4), 1999, pp. 1160-1165
Chiral 1,2-bis(phosphetano)benzenes are readily prepared from accessible, o
ptically pure 1,3-diol cyclic sulfates. Their ruthenium complexes catalyze
the enantioselective hydrogenations of functionalized carbonyls with modera
te-to-high enantiomeric excesses. High levels of diastereo- and enantiosele
ctivity are achieved, especially in the hydrogenation of beta-diketones to
the corresponding anti-1,3-diols.