Synthesis of novel β-aminocyclobutanecarboxylic acid derivatives by a solvent-free aza–Michael addition and subsequent ring closure
作者:Tamara Meiresonne、Sven Mangelinckx、Norbert De Kimpe
DOI:10.1039/c1ob05872j
日期:——
Novel β-aminocyclobutanecarboxylic acid derivatives were prepared via a sequential solvent-free aza-Michael addition of benzophenone imine across 3-halopropylidenemalonates and base-induced ringclosure. These highly substituted cyclobutanedicarboxylic acid derivatives were subjected to a reactivity study which demonstrated the tendency of these donor–acceptor substituted four-membered rings to be