Copper-Catalyzed Asymmetric Michael Reactions with α-Amino Acid Amides: Synthesis of an Optically Active Piperidine Derivative
作者:Jens Christoffers、Heiko Scharl
DOI:10.1002/1099-0690(200205)2002:9<1505::aid-ejoc1505>3.0.co;2-k
日期:2002.5
Quaternary stereocenters are obtained at room temperature in copper-catalyzed asymmetric Michael reactions with α-amino acid amides as chiral auxiliaries. L-Valine diethylamide was applied as a chiral auxiliary, and an optically active piperidine derivative was prepared with 97% ee. The optical purity of the product was established by GLC after cyclization to a hexahydroisoquinolonecarboxylate. (© Wiley-VCH
在室温下,以 α-氨基酸酰胺作为手性助剂,在铜催化的不对称迈克尔反应中获得四元立体中心。以L-缬氨酸二乙酰胺为手性助剂,制备了97%ee的旋光哌啶衍生物。在环化为六氢异喹诺酮羧酸盐后,通过 GLC 确定产物的光学纯度。(© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)