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Elsevier, Journal of Molecular Catalysis A: Chemical, 1-2(195), p. 1-9

DOI: 10.1016/s1381-1169(02)00537-x

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Pyrrolidine-Based Amino Alcohols: Novel Ligands for the Enantioselective Alkylation of Benzaldehyde”,

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Abstract

A series of easily obtained pyrrolidine-based β-amino alcohols derived from tartaric acid and primary amines was synthesized and used as chiral ligands in the enantioselective alkylation of benzaldehyde. Using diethylzinc, 1-phenyl-1-propanol was obtained with enantiomeric excesses of up to 80% when (3S,4S)-N-(1-naphthylmethyl)-3,4-dihydroxypyrrolidine was used. The nature of the N-substituent on the ligand, as well as the reaction temperature proved to significantly influence reaction product distribution as well as the enantiomeric excess of the chiral alcohol.