Polycyclic N-Heterocyclic Compounds. 55 [1]. A Novel Reaction of N-(5,6-Dihydro[1]benzothiepino[5,4-d]pyrimidin-4-yl)amidine or Its Amide Oxime Derivatives with Hydroxylamine

摘要

The reactions of N-(5,6-dihydro[1]benzothiepino[5,4-d]pyrimidin-4-yl)amidines or its amide oxime derivatives with hydroxylamine hydrochloride under basic condition gave abnormal cyclization products via a ring cleavage of pyrimidine component accompanied with ring closure of [1,2,4]oxadiazole.