Controlled TfOH- or AuCl-catalyzed cycloisomerization and tandem hydrolytic defluorination of 1,2-allenyl perfluoroalkyl ketones†
Abstract
An efficient TfOH- or AuCl-catalyzed cycloisomerization reaction of easily available n-perfluoroalkyl 1,2-allenyl ketones occurring smoothly to form 2-perfluoroalkyl furans has been reported. In the presence of TfOH and H2O, a corresponding tandem hydrolytic defluorination afforded multi-substituted furan-2-yl n-perfluoroalkyl ketones.