Asymmetric Strecker Synthesis of α-Amino Acids via a Crystallization-Induced Asymmetric Transformation Using (<i>R</i>)-Phenylglycine Amide as Chiral Auxiliary
作者:Wilhelmus H. J. Boesten、Jean-Paul G. Seerden、Ben de Lange、Hubertus J. A. Dielemans、Henk L. M. Elsenberg、Bernard Kaptein、Harold M. Moody、Richard M. Kellogg、Quirinus B. Broxterman
DOI:10.1021/ol007042c
日期:2001.4.1
[reaction: see text]. Diastereoselective Strecker reactions based on (R)-phenylglycine amide as chiralauxiliary are reported. The Strecker reaction is accompanied by an in situ crystallization-induced asymmetric transformation, whereby one diastereomer selectively precipitates and can be isolated in 76-93% yield and dr > 99/1. The diastereomerically pure alpha-amino nitrile obtained from pivaldehyde