A direct preparation of acetyl-(S)-phenylalanyl-(S)-phenylalanine methyl ester by a double asymmetric hydrogenation
- 1 January 1982
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 21,p. 1261-1262
- https://doi.org/10.1039/c39820001261
Abstract
Acetyl-(S)-phenylalanyl-(S)-phenylalamine methyl ester [Ac(S)Phe(S)PheOMe] is obtained with high diastereoselectivity and enantioselectivity by catalytic hydrogenation, using [Rh(dipamp)(cod)]+BF– 4(dipamp =R,R-1,2-bis[(2-Methoxypheny) phenylphosphino] ethane, cod = cyclo-octa-1,5-diene) as chiral catalyst, of a substrate containing two prochiral doubly bonded carbon atoms, which is easily available from glycine and benzaldehyde.Keywords
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