Synthesis of 1,2,3-trisubstituted and 1,2,2,3-tetrasubstituted aziridines from α-chloroketimines
作者:Norbert De Kimpe、Luc Moens
DOI:10.1016/s0040-4020(01)88388-5
日期:1990.1
Secondary α-chloroketimines react with lithium aluminium hydride in ether to afford mixtures of cis- and trans-1,2,3-trisubstituted aziridines. The reaction products are formed by nucleophilic addition of hydride across the imino bond and subsequent intramolecular nucleophilic substitution. Tertiary α-chloroketimines react similarly with lithium aluminium hydride to yield 1,2,2,3-tetrasubstituted aziridines
仲α-氯代酮亚胺与氢化铝锂在乙醚中反应,得到顺式和反式1,2,3-三取代的氮丙啶的混合物。反应产物通过跨亚氨基键的氢化物的亲核加成和随后的分子内亲核取代而形成。叔α-氯代酮亚胺与氢化铝锂类似地反应,生成1,2,2,3-四取代的氮丙啶。α,α-二氯酮亚胺与氢化锂铝以立体有择的方式反应,仅生成顺式氮丙啶。这些结果以中间体α-氯氮丙啶的形成来解释,从该中间体α-氯氮丙啶排出氯离子,得到中间体氯化阿奇铵。后者的应变中间体经历氢化物的立体定向加成,得到顺-氮丙啶。