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A new type of chiral 1,1’-binaphthol(BINOL) derived samarium complex, preparedfrom (R)- or (S)-BINOL and SmCl3, serves as an enantioselective catalyst for the Meerwein-Ponndorf-Verley (MPV) reduction in the presence of Molecular Sieves 4A(MS 4A). Moderate enantioselectivity was obtained. Kinetic studies show slight decrease of the enantiomeric excess with the conversion.
A new type of chiral 1,1’-binaphthol (BINOL) derived samarium complex, preparedfrom (R) - or (S) -BINOL and SmCl3, serves as an enantioselective catalyst for the Meerwein- Ponndorf-Verley presence of Molecular Sieves 4A (MS 4A). Moderate enantioselectivity was obtained. Kinetic studies show slight decrease of the enantiomeric excess with the conversion.