The reaction of fluoroalkynes with ammonia and benzylamine gave perflu
oroalkylated enamines predominantly as the Z isomer, which were hydrog
enated with palladium on carbon to afford perfluoroalkylated beta-amin
o acids in good yield. The reaction of fluoroalkynes with diethyl phos
phite afforded perfluoroalkylated vinyl phosphonates in moderate yield
.