作者:Helma Wennemers、Markus Wiesner
DOI:10.1055/s-0029-1218651
日期:2010.5
The tripeptide H-d-Pro-Pro-Glu-NH2 is an efficient catalyst for conjugate addition reactions of aldehydes to nitroolefins. Chiral γ-nitroaldehydes are obtained in excellent yields and stereoselectivities in the presence of as little as 1 mol% of the tripeptide catalyst. Under further optimized reaction conditions the product was obtained in essentially perfect stereoselectivity (syn/anti, >99:1, 99%
三肽H - d -Pro-Pro-Pro-Glu-NH 2是用于醛与硝基烯烃的共轭加成反应的有效催化剂。在低至1摩尔%的三肽催化剂存在下,以优异的收率和立体选择性获得了手性γ-硝基醛。在进一步优化的反应条件下,获得的产物具有基本完美的立体选择性(顺/反,> 99:1,99%ee)。 不对称催化-共轭加成反应-有机催化-肽-脯氨酸