作者:Maria Bucciarelli、Arrigo Forni、Irene Moretti、Giovanni Torre、Alexander Prosyanik、Remir G. Kostyanovsky
DOI:10.1039/c39850000998
日期:——
Classical optical resolution by fractional crystallization of diastereoisomeric salts obtained from the reaction of racemic N-t-butyl-(3a) and N-isopropyl-oxaziridine-3,3-dicarboxylic acid monomethyl ester (3b) with (R)-(+)- and (S)-(–)-1-phenylethylamine, followed by methylation of the optically active (3a) and (3b), affords chiral oxaziridines (2a) and (2b) whose asymmetry is due solely to the nitrogen
由外消旋的N-叔丁基-(3a)和N-异丙基-恶唑烷-3,3-二羧酸单甲酯(3b)与(R)-(+)反应得到的非对映异构盐的分步结晶得到经典的光学拆分-和(S)-(-)-1-苯基乙胺,然后将光学活性的(3a)和(3b)甲基化,得到手性唑基吡啶(2a)和(2b),它们的不对称性仅由氮原子引起。