Oxidative (3+3) Cycloaddition/Ring-Opening Reactions of Simple Urea Derivatives and <i>N</i>,<i>N</i>′-Cyclic Azomethine Imines to Construct 1,2,3,5-Tetrazine-4(1<i>H</i>)-one Derivatives
作者:Zhao-Lin He、Wen Tian、Gang Wang
DOI:10.1021/acs.joc.3c00525
日期:2023.7.7
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.
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。