Alkynyliodonium Salts in Organic Synthesis. Preparation of Annelated Dihydropyrroles by Cascade Addition/Bicyclization of Dienyltosylamide Anions with Phenyl(propynyl)iodonium Triflate
作者:Ken S. Feldman、David. A. Mareska
DOI:10.1021/jo9907538
日期:1999.7.1
The addition of simple pentadienyltosylamide derivatives to the two-carbon electrophile phenyl(propynyl)iodonium triflate initiates a sequence of transformations that furnishes complex, highly functionalized cyclopentenannelated dihydropyrrole products in moderate yields with complete stereoselection. This sequence demonstrates that diyls resulting from homolytic scission of alkylidene carbene-alkene
将简单的戊二烯基甲苯磺酰胺衍生物添加到三碳的亲电子苯基(丙炔基)碘鎓三氟甲磺酸盐中可引发一系列转化,以中等收率提供复杂的,高度官能化的环戊烯化二氢吡咯产物,并具有完全的立体选择。该序列表明,由亚烷基卡宾-烯烃加合物的均相裂解产生的二基可以在温和的实验条件下容易地获得,并且在适当的侧基官能团存在下,这些二基可以有效地环化。源自异戊二烯的异构体甲苯磺酰胺遵循简略的反应过程,并通过与二基形成竞争的异构化作用递送氮杂双环[3.1.0]己烷。