Rapid and General Protocol towards Catalyst-Free Friedel-Crafts C-Alkylation of Indoles in Water Assisted by Microwave Irradiation
作者:Margherita De Rosa、Annunziata Soriente
DOI:10.1002/ejoc.200901333
日期:2010.2
uncatalyzed Friedel― Crafts alkylation of indoles using microwave irradiation in water is described. A series of functionalized indole derivatives has been synthesized in very short times with moderate to good yields. The combination of microwave irradiation and superheated water offers significant advantages over conventional methods, such as higher selectivities, simplicity, shorter reaction times, and
We report novel iridium(III)-catalyzed reactions that afford substituted indoles via the indirect functionalization of alcohols via C-3 selective alkylation of indoles with alcohols and a one-pot cascade strategy from amino- or nitro-phenyl ethyl alcohols, which incorporates oxidative cyclization and C-3 alkylation.