Synthesis of 2, 2-dialkylcyclopropylamines from β-chloroimines and application towards the synthesis of1-amino-2, 2-dialkylcyclopropane-carboxylic acids
Base-induced 1, 5-dehydrochlorination of β-chloroimines, having a relatively acidic hydrogen atom at carbon-1 of the N-substituent (eg benzyl, methoxycarbonylmethyl, α- methylbenzyl), afforded N-cyclopropylimines which were easily hydrolyzed into