A direct preparation of acetyl-(S)-phenylalanyl-(S)-phenylalanine methyl ester by a double asymmetric hydrogenation
作者:Jean-Claude Poulin、Henri B. Kagan
DOI:10.1039/c39820001261
日期:——
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
乙酰基- (小号)-phenylalanyl-(小号)-phenylalamine甲酯[AC(小号)苯丙氨酸(小号)PheOMe]与高非对映选择性和对映选择性催化加氢制得,使用的[Rh(DIPAMP)(COD)] + BF - 4(dipamp = R,R -1,2-双[(2-甲氧基苯基)苯基膦基]乙烷,cod =环-八--1,5-二烯)作为手性催化剂,含有两个前手性双键碳原子,甘氨酸和苯甲醛很容易获得。