Yc. Shen et al., SYNTHESIS OF PERFLUOROALKYLATED HETEROCYCLIC PHOSPHONATES, Journal of the Chemical Society. Perkin transactions. I, (8), 1995, pp. 997-999
Perfluoroalkylated heterocyclic phosphonates have been conveniently sy
nthesized by 1,3-dipolar cyclo-addition of aromatic nitrile oxides (or
ethyl diazoacetate or tert-butyl azidoacetate) and perfluoroalkylated
alkynylphosphonates in good to excellent yields with high regioselect
ivity.