Nucleophilic Cycloaromatization of Ynamide-Terminated Enediynes
作者:Andrei Poloukhtine、Valentin Rassadin、Alexander Kuzmin、Vladimir V. Popik
DOI:10.1021/jo101238x
日期:2010.9.3
ynamide fragment. The resulting ketenimmonium cation then cyclizes to produce naphthyl cation, which rapidly reacts with nucleophiles or undergoes Friedel−Crafts addition to aromatic compounds. In alcohols, addition of the nucleophilic solvent across the activated triple bond competes with the cyclization reaction. The ratio of cyclized to solvolysisproducts decreases with the increase in ring size.