Rhodium-Catalyzed Tandem Cyclization: Formation of 1<i>H</i>-Indenes and 1-Alkylideneindans from Arylboronate Esters in Aqueous Media
作者:Mark Lautens、Tzvetelina Marquardt
DOI:10.1021/jo049722p
日期:2004.7.1
functionalized organorhodium intermediate which can cyclize onto nonterminal acetylenes in good to excellent yields. The catalytic system involves the use of electron-rich, sterically bulky ligands as tri-tert-butylphosphonium tetrafluoroborate stabilizing the organorhodium intermediates and reduces the incidence of protodeboronation in aqueous media.