1,3-Dipoles Are Not the Only Reactive Species in 2-Acylaziridine Pyrolyses

Article abstract of DOI:10.1021/jo00391a072

Pyrolysis of N-tert-butylaziridines 1 in the presence of acetylenedicarboxylate gives adducts of structure 5, which rearrange to 6, rather than the expected ylide adducts 4.