Fluorinated (hetero)cycles via ring-closing metathesis of fluoride- and trifluoromethyl-functionalized olefins
De Matteis V, van Delft FL, de Gelder R, Tiebes J, Rutjes FPJT
TETRAHEDRON LETTERS 45 (5): 959-963 JAN 26 2004

Abstract:
Ring-closing metathesis(RCM) has been shown to be a viable tool to incorporate fluoride and trifluoromethyl substituents in (hetero)cyclic ring systems. 2-Fluoroacrylamides were cyclized to the corresponding lactams, and trifluoromethyl- substituted olefins were cyclized to yield trifluoromethylated cyclopentenes, pyrrolines and a dihydrofuran derivative.