Synthesis of polymethyl substituted [2.2]metaparacyclophanes and their Lewis-acid induced isomerisation to [2.2]metacyclophanes
作者:Tomoe Shimizu、Katsuhiro Hita、Arjun Paudel、Junnji Tanaka、Takehiko Yamato
DOI:10.3184/030823409x430185
日期:2009.4
substituted [2.2]metaparacyclophanes using sulfur method and the X-ray structure determination of 4,5,6,8,12,13,15,16-octamethyl[2.2]metaparacyclophane are described. AlCl3-MeNO2-catalysed trans-tert-butylation of 5-tert-butyl-8,12,13,15,16-pentamethyl[2.2]metaparacyclophane in benzene led to isomerisation reaction to afford the strainless 8,12,13,14,16-pentamethyl[2.2]metacyclophane in 85% yield along
描述了硫法制备多甲基取代的[2.2]间对环芳烃和4,5,6,8,12,13,15,16-八甲基[2.2]间对环芳烃的X射线结构测定。AlCl3-MeNO2 催化 5-叔丁基-8,12,13,15,16-五甲基 [2.2] 间对环烷在苯中的叔丁基转移导致异构化反应,得到无应变的 8,12,13,14, 16-五甲基[2.2] 间环芳烷和叔丁基苯的产率为 85%。