Sn. Osipov et al., SYNTHESIS OF FLUORINE-CONTAINING CYCLIC AMINO-ACID DERIVATIVES VIA RING CLOSING OLEFIN METATHESIS, Chemical communications, (18), 1998, pp. 2053-2054
New N-protected alpha-CF3 amino esters with two alkene chains (1,7-die
nes 3 and 1,6-dienes 5) were reacted with the ring closing metathesis
catalyst Ru=CHPh(Cl)(2)(PCy3)(2) to give the alpha-CF3 dehydropipecoli
nate and prolinate derivatives 6 and 7.