Abstract
Abstract A series of new monodentate phosphite ligands based on carboranes have been synthesized and used for asymmetric Rh-catalyzed hydrogenation of prochiral olefins in CH2Cl2 with the result of up to 99.5% ee. High reactivities (100% conversion in 45–60 min) and enantioselectivities (up to 92%) were obtained in the hydrogenation of dimethyl itaconate in supercritical CO2. In this case the catalytic performance is affected greatly by hydrogen and total pressures.
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