Effect of Substitution on the Intramolecular 1,3-Dipolar Cycloaddition of Alkene Tethered Münchnones
作者:Guillaume Bélanger、Myriam April、Étienne Dauphin、Stéphanie Roy
DOI:10.1021/jo061556t
日期:2007.2.1
dipolarophile and the münchnone on the intramolecularcycloaddition outcome was examined. It was found that either nonactivated or electron-poor alkenes can react with the münchnone if these alkenes are tethered at position 4 on the münchnone (2, R2 = alkene tether), whereas only an electron-poor alkene at position 2 (2, R3 = alkene tether) could undergo successful cycloaddition. Also, münchnones substituted