1: methyl ethyl(1,1,1,3,3,3-hexafluoroisopropyl)phosphonoacetate With potassium hexamethylsilazane in tetrahydrofuran; toluene T=-78°C; Horner-Wadsworth-Emmons reaction; 1 h; 2: benzaldehyde in tetrahydrofuran; toluene T=-78°C; 18 h; Title compound not separated from byproducts;

1: methyl ethyl(1,1,1,3,3,3-hexafluoroisopropyl)phosphonoacetate With potassium hexamethylsilazane in tetrahydrofuran; toluene T=-78°C; Horner-Wadsworth-Emmons reaction; 1 h; 2: benzaldehyde in tetrahydrofuran; toluene T=-78°C; 18 h; Title compound not separated from byproducts;