NOVEL REACTIONS OF BENZOTHIAZOLIUM<i>N</i>-PHENACYLIDE WITH METHYLENECYCLOPROPENES
作者:Otohiko Tsuge、Hiroshi Shimoharada、Michihiko Noguchi
DOI:10.1246/cl.1981.1199
日期:1981.9.5
Benzothiazolium N-phenacylide reacted with methylenecyclopropenes having an acyl group on the 4-position to give 3a,11a-dihydro-5aH-furo[3′,2′:2,3]pyrido[6,1-b]benzothiazole derivative via an intermediary 3-butadienylbenzothiazolium betaine. The reaction of the ylide with a methylenecyclopropene bearing two cyano groups on the 4-position in THF gave a cyclobutane together with benzothiazole, whereas
苯并噻唑鎓 N-苯甲酰化物与在 4-位具有酰基的亚甲基环丙烯反应得到 3a,11a-二氢-5aH-呋喃[3',2':2,3]吡啶并[6,1-b]苯并噻唑衍生物中间体 3-丁二烯基苯并噻唑甜菜碱。叶立德与在 THF 中的 4-位带有两个氰基的亚甲基环丙烯反应得到环丁烷和苯并噻唑,而在乙醇中的反应中得到 3-丁二烯基-2-乙氧基苯并噻唑啉衍生物。