Preparation of 2-azaallyl anions and imines from N-chloroamines and their cycloaddition and allylation
作者:Shveta Pandiancherri、David W. Lupton
DOI:10.1016/j.tetlet.2010.11.142
日期:2011.2
Exposure of N-chloroamines to (KOBu)-Bu-t or LDA, in the presence of PMDETA or HMPA, provides 2-azaallyl anions capable of pi 4s + pi 2s cycloaddition reactions with a range of olefins. Good yields were achieved with stabilised systems, however, they were more modest when accessing semi-stabilised 2-azaallyl anions. By modifying the reaction conditions, one-pot dehydrochlorination/allylation can also be achieved with a range of N-chloroamines. (C) 2010 Published by Elsevier Ltd.