A convenient, simple, and expeditious procedure for the preparation
of novel trifluoromethylated bicyclic pyrazolidinone systems by
noncatalytic 1,3-dipolar cyclization of azomethine imines with tert-butyl 2-(trifluoromethyl)prop-2-enoate
is presented.
bicyclic compounds - fluorine - cycloadditions - heterocycles - imines - drugs