Addition Reactions of Chloro- or Iodomethyllithium to Imines. Synthesis of Enantiopure Aziridines and β-Chloroamines

被引:38
作者
Concellon, Jose M. [1 ]
Rodriguez-Solla, Humberto [1 ]
Bernad, Pablo L. [1 ]
Simal, Carmen [1 ]
机构
[1] Univ Oviedo, Fac Quim, Dept Quim Organ & Inorgan, E-33071 Oviedo, Spain
关键词
AZA-DARZENS REACTION; FUNCTIONALIZED ORGANOLITHIUM COMPOUNDS; HIGHLY DIASTEREOSELECTIVE SYNTHESIS; ASYMMETRIC RADICAL ADDITIONS; CARBOXYLIC-ACID CHLORIDES; ONE-POT TRANSFORMATION; IN-SITU; N-DIPHENYLPHOSPHINYLIMINES; OLEFIN AZIRIDINATION; STEREOSELECTIVE C-2;
D O I
10.1021/jo802596y
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
We report a novel, simple, and efficient synthesis of aziridines and 1-chloroalkan-2-amines by the reaction of imines derived from various aldehydes and p-toluenesulfonamide or benzenesulfonamide with iodoor chloromethyllithium, respectively. Both halogenated anions were generated in situ by treatment of diiodo- or chloroiodomethane with methyllithium at -78 or 0 degrees C. The reaction of in situ generated iodo- or chloromethyllithium could also be performed from chiral 2-aminoaldimines to yield enantiopure aziridines or (2S,3S)-2,3-diamino-1-chloroalkanes with high stereoselectivity.
引用
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页码:2452 / 2459
页数:8
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