Diene-transmissive hetero-Diels–Alder reaction of cross-conjugated azatrienes: a novel and efficient method for the synthesis of ring-fused nitrogen heterocycles

Abstract

A diene-transmissive hetero-Diels–Alder reaction of cross- conjugated azatrienes, which provides a novel and efficient synthetic method for ring-fused, nitrogen-heterocyclic frameworks such as quinazolin-2-ones and pyrimido[5,4-c]- pyridazin-6-ones, is described for the first time.