A novel oxidative (3 + 3) cycloaddition/ring-opening reaction of N,N′-cyclic azomethine imines with the in situ generated diaza-oxylallyl cations from simple urea derivatives in the presence of base and PhI(OAc)₂ has been developed. This transformation performs well over a broad substrate scope, which provides facile and rapid access to 1,2,3,5-tetrazine-4(1H)-one derivatives in good yields.

中文翻译：

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简单尿素衍生物与N,N′-环状甲亚胺亚胺的氧化(3+3)环加成/开环反应构建1,2,3,5-四嗪-4(1H)-酮衍生物

_{在碱和 PhI(OAc) 2}存在下，N , N'-环状偶氮甲碱亚胺与简单尿素衍生物原位生成的二氮杂-草烯丙基阳离子发生了一种新型氧化 ( 3 + 3) 环加成/开环反应。。该转化在广泛的底物范围内表现良好，从而以良好的产率轻松快速地获得 1,2,3,5-四嗪-4(1 H )-one 衍生物。