作者:J. W. Lown、K. Matsumoto
DOI:10.1139/v72-090
日期:1972.2.15
Reaction of diphenylcyclopropenethione with a variety of N-substituted pyridinium imines in refluxing benzene gives 2,4,5-trisubstituted-6H-1,3-oxazin-6-thiones in good to excellent yields. The structure of 2,4,5-triphenyl-6H-1,3-oxazin-6-thione prepared in this manner was proven by oxidation and by hydrolysis to the known 2,4,5-triphenyl-6H-1,3-oxazin-6-one. In the preparation of 4,5-diphenyl-2-ethoxy-6H-1
二苯基环丙烯硫酮与多种 N-取代的吡啶亚胺在回流苯中反应,以良好至极好的收率得到 2,4,5-三取代-6H-1,3-恶嗪-6-硫酮。以这种方式制备的 2,4,5-三苯基-6H-1,3-恶嗪-6-硫酮的结构通过氧化和水解为已知的 2,4,5-三苯基-6H-1,3-恶嗪-6-一。在4,5-二苯基-2-乙氧基-6H-1,3-恶嗪-6-硫酮的制备中,将亚胺中的杂芳基由吡啶变为3-甲基吡啶再变为3,5-二甲基吡啶对收率影响不大(约 60%)。