FORMATION OF NOVEL CAGE COMPOUNDS VIA END0-[3 + 2] CYCLOADDUCTS BETWEEN THIAZOLIUM<i>N</i>-METHYLIDES AND METHYLENECYCLOPROPENES
作者:Otohiko Tsuge、Hiroshi Shimoharada、Michihiko Noguchi、Shuji Kanemasa
DOI:10.1246/cl.1982.711
日期:1982.5.5
N-phenacylide and N-dicyanomethylide react with a methylenecyclopropene bearing an aryl group on the 4-position to give novel cage compounds, 6,8-thiazapentacyclo[6.3.1.01,10.05,12.07,11]dodecenes. The reaction proceeds via an intramolecular Diels–Alder reaction of the initially formed endo-[3 + 2] cycloadducts, followed by a hydrogen shift.
Thiazolium N-phenacylide 和 N-dicyanomethylide 与在 4 位带有芳基的亚甲基环丙烯反应,得到新型笼状化合物 6,8-噻唑五环 [6.3.1.01,10.05,12.07,11] 十二烯。该反应通过最初形成的内-[3 + 2] 环加合物的分子内 Diels-Alder 反应进行,然后进行氢转移。