benzyloxy-2-pyrrolidinones 7 starting from the known 5-alkyl-1-benzyl-4-benzyloxy-5-hydroxy-2-pyrrolidinones 6 . The method is based on TMSCl-mediated reductive dehydroxylation of 6 with Zn(BH4)2, which allows the synthesis of a variety of 2-pyrrolidinones 7 in 48-75% yields with cis/trans diastereoselectivities ranging from 58:42 to 90:10.
摘要 我们在本文中报道了一种从已知的 5-烷基-1-苄基-4-苄氧基-5-开始的 (4S,5S)-5-烷基-1-苄基-4-苄氧基-
2-吡咯烷酮 7 的灵活方法。羟基-
2-吡咯烷酮 6 . 该方法基于 TMSCl 介导的 6 与 Zn(
BH4)2 的还原脱羟基化,这允许以 48-75% 的产率合成各种
2-吡咯烷酮 7,顺/反非对映选择性范围为 58:42 至 90: 10.