Intramolecular trapping of amides by 1-lithio-1-bromocyclopropanes
作者:Mark S Baird、Florian A.M Huber、Viacheslav V Tverezovsky、Ivan G Bolesov
DOI:10.1016/s0040-4020(00)01120-0
日期:2001.2
Reaction of 2-acylaminomethyl-1,1-dibromocyclopropanes with methyllithium at -90 degreesC leads to selective bromine-lithium exchange and cyclisation to give a 1-bromo-3-azabicyclo[3.1.0]hexan-2-ol. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis of (2S, 3R, 4S)-3,4-methanoproline and analogues by cyclopropylidene insertion
作者:Viacheslav V. Tverezovsky、Mark S. Baird、Ivan G. Bolesov
DOI:10.1016/s0040-4020(97)00988-5
日期:1997.10
Intramolecular insertion of single enantiomers of cyclopropylidenes into 5,6-related CH bonds adjacent to nitrogen has been used to obtain enantiomerically pure methanoproline and a number of analogues with a high degree of one- or two-fold asymmetric induction.