The Characterization and Cycloaddition Reaction of 5,6-Dihydro-1,3-dimethyl-6-methylene-5-[(substituted amino)methylene]-2,4(1<i>H</i>,<i>H</i>)-pyrimidinediones
作者:Michihiko Noguchi、Yasutoshi Kiriki、Takashi Ushijima、Shoji Kajigaeshi
DOI:10.1246/bcsj.63.2938
日期:1990.10
5,6-Dihydro-1,3-dimethyl-6-methylene-5-[(substituted amino)methylene]-2,4(1H,3H)-pyrimidinedione intermediates (E) were characterized spectroscopically and chemically. The cycloaddition reaction of E with olefinic dienophiles was carried out in highly regio- and stereoselective manners to give quinazoline derivatives.
对 5,6-二氢-1,3-二甲基-6-亚甲基-5-[(取代氨基)亚甲基]-2,4(1H,3H)-嘧啶二酮中间体(E)进行了光谱学和化学表征。E 与烯烃类亲二烯烃发生的环加成反应具有高度的区域和立体选择性,可得到喹唑啉衍生物。