Cyclopropanones and related compounds. Part III. Addition of some isoelectronic molecules to olefins and dienes
Abstract
N-Ethylmethyleneaziridine adds to tetracyanoethylene to form a cyclobutane in which the two protons of the methylene of the N-ethyl group have become magnetically different. An unusual reaction takes place between the aziridine and dimethyl acetylenedicarboxylate, producing trimethyl 1-ethylpyrrole-2,3,4-tricarboxylate. Feist's ester gives normal Diels–Alder adducts with furan and cyclopentadiene, but with the less reactive anthracene rearrangement occurs first.