Stable 1,4-dialkyl-1,4-dihydropyrazines
Abstract
Stable 8π-electron 1,4-dialkyl-1,4-dihydropyrazines are readily prepared by reaction of N-benzyldiphenacylamine hydrobromide with primary aliphatic amines provided the alkyl group has low migratory aptitude; proof of structure and ready oxidation to stable free radicals is discussed.