Intramolecular Trapping of Esters by 1-Lithio-1-bromocyclopropanes
摘要:
Reaction of 2-acyloxymethyl-1,1-dibromocyclopropanes with methyllithium at -90 degrees C leads to selective bromine-lithium exchange and intramolecular cyclisation to give a 1-bromo-3-oxabicyclo[3.1.0]hexan-2-ol. (C) 2000 Elsevier Science Ltd. All rights reserved.
Intramolecular Trapping of Esters by 1-Lithio-1-bromocyclopropanes
摘要:
Reaction of 2-acyloxymethyl-1,1-dibromocyclopropanes with methyllithium at -90 degrees C leads to selective bromine-lithium exchange and intramolecular cyclisation to give a 1-bromo-3-oxabicyclo[3.1.0]hexan-2-ol. (C) 2000 Elsevier Science Ltd. All rights reserved.
Intramolecular trapping of esters and amides by 1-lithio-1-bromocyclopropanes
作者:Mark S. Baird、Florian A.M. Huber、Viacheslav V. Tverezovzky、Ivan G. Bolesov
DOI:10.1016/s0040-4039(98)01999-6
日期:1998.12
Reaction of 2-acyloxymethyl or 2-acylaminomethyl-1, 1-dibromocycloprapanes with methyllithium at -90 degrees C leads to selective bromine-lithium exchange and intramolecular cyclisation to give a 1-bromo-3-oxa- or 1-broma-3-oxa-bicyclo[3. 1.0]hexan-2-ol. (C) 1998 Elsevier Science Ltd. All rights reserved.