(1) Institut für Organische Chemie, Universität Leipzig, D-04103 Leipzig, Bundesrepublik Deutschland
Abstract:
Summary 4,4-Bis(trifluoromethyl)-1-oxa-3-azabuta-1,3-dienes and acrylonitrile react in the presence of equimolar amounts of 4-dimethylaminopyridine (DMAP) to give 2:1-adducts. A sequential [4+2] cycloaddition is proposed.