N-substituted hydroxysuccinimides from (s)-malic acid as new reagents for asymmetric diels-alder additions to enoates
作者:T. Poll、A.F. Abdel Hady、R. Karge、G. Linz、J. Weetman、G. Helmchen
DOI:10.1016/s0040-4039(01)93808-0
日期:1989.1
(S)-N-Methyl-2-hydroxysuccinimide, easily available from natural (S)-malic acid, supplements the previously introduced (R)-pantolactone as chiral auxiliary for asymmetric Diels-Alder reactions of enoates, but yields products of opposite configuration. Practical large-scale preparations of enantiomer pairs of synthetically important Diels-Alder adducts, including adducts from crotonates, are described
(S)-N-甲基-2-羟基琥珀酰亚胺(很容易从天然(S)-苹果酸中获得)补充了先前引入的(R)-泛内酯作为手性助剂,用于烯酸酯的不对称Diels-Alder反应,但产生的构型相反。描述了具有重要合成意义的狄尔斯-阿尔德加合物的对映异构体对的实际大规模制备,包括巴豆酸酯的加合物。