Highly β-Regioselective Friedel-Crafts Aminoalkylation of Pyrroles with Cyclic Perfluoroalkylated Imines
作者:Olga I. Shmatova、Nikolay E. Shevchenko、Elisabeth S. Balenkova、Gerd-Volker Röschenthaler、Valentine G. Nenajdenko
DOI:10.1002/ejoc.201201725
日期:2013.5
A Friedel–Crafts-type alkylation reaction was studied between various pyrroles and α-polyfluoroalkylated cyclicimines that were activated by Lewis acids. The reaction proceeded under mild conditions and provided a high yielding synthesis of α-CF3-substituted pyrrolidines and piperidines as well as seven-membered analogues that contained a pyrrole ring. The unpredictably high β-selectivity for the