Abstract

New α-alkynyl, α-CF3 amino esters have been prepared from electrophilic imines and used to produce 3-alkenyl-3,4-dehydroproline derivatives, ia enyne metathesis with the precatalyst [RuCCCPh2(Cl)(PCy3)(arene)]O3SCF3. These new conjugated fluorine-containing dienes are active substrates for the Diels–Alder reaction and lead to a new class of bicyclic amino esters.

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