作者:Cuifen Lu、Longduo Zhang、Hang Su、Guichun Yang、Zuxing Chen
DOI:10.3184/174751912x13497155982090
日期:2012.11
The asymmetric synthesis of both (R)-and (S)-arundic acid has been achieved via the key step of a stereoselective alkylation reaction using non-cross-linked polystyrene (NCPS) supported (4R)- and (4S)-2-phenylimino-2-oxazolidine as chiral auxiliaries. This method is efficient (both enantiomers were obtained in 99% ee and 60% overall yield) and the chiral auxiliaries can be recovered quantitatively
使用非交联聚苯乙烯 (NCPS) 支持的 (4R)- 和 (4S)-2- 通过立体选择性烷基化反应的关键步骤,实现了 (R)- 和 (S)- 茚酸的不对称合成苯基亚氨基-2-恶唑烷作为手性助剂。这种方法是有效的(两种对映异构体均以 99% ee 和 60% 总产率获得)并且手性助剂可以通过简单的过滤进行定量回收。