Regioselective Friedel−Crafts Alkylation of Anilines and Amino-Substituted Heteroarenes with Hexafluoroacetone Sesquihydrate
作者:Raffaello Masciadri、Matthias Kamer、Nadine Nock
DOI:10.1002/ejoc.200300501
日期:2003.11
aminopyridines, underwent regioselectiveFriedel−Crafts alkylation in neat hexafluoroacetone sesquihydrate in a broad range of temperatures, reaction times, and yields (2%−94%) depending strongly on the electron density of the substrate. Prior N,N-dibenzylation of aniline and 2-aminopyridine strongly promoted substrate reactivity and resulted in higher yields (> 80%). The described Friedel−Crafts alkylations in