Regio- and stereoselectivity in reactions of 2,3-cis- and trans-3-alkyl-2-vinylaziridines with organocopper reagents: Importance of 2,3-cis-stereochemistry in controlling selectivity
作者:Hiroshi Aoyama、Norio Mimura、Hiroaki Ohno、Kiyonori Ishii、Ayako Toda、Hirokazu Tamamura、Akira Otaka、Nobutaka Fujii、Toshiro Ibuka
DOI:10.1016/s0040-4039(97)01726-7
日期:1997.10
By treatment with organocopper reagents, N-activated 2,3-cis-3-alkyl-2-vinylaziridines produced exclusively (E)-allyl amines in high yields, presumably via an anti-SN2′ reaction pathway. On the other hand, under otherwise identical conditions, N-activated 2,3-trans-3-alkyl-2-vinylaziridines gave an 85-96:15-4 mixture of (E)- and (Z)-allyl amines. In reactions of certain N-activated2,3-trans-3-alkyl-2-vinylaziridines
通过用有机铜试剂处理,N-活化的2,3-顺-3-烷基-2-乙烯基氮丙啶类化合物可能通过反-S N 2'反应途径以高收率专门生产了(E)-烯丙基胺。另一方面,在其他相同条件下,N-活化的2,3-反式-3-烷基-2-乙烯基氮丙啶给出了(E)-和(Z)-烯丙基胺的85-96:15-4混合物。在某些经N活化的2,3-反式-3-烷基-2-乙烯基氮丙啶的反应中,仅以2-3%的产率获得了N 2反应产物。