Studies on the reactions of silyl enol ether with perfluoroorganic compounds——Ⅲ.Synthesis of perfluoroalkylated α,β-unsaturated aldehydes and their derivatives

Per-and poly-fluoroalkylated α,β-unsaturated alkenals were synthesized by the reaction of silyl enol ether of alkanals with per-and poly-fluoroalkyl iodide initiated by Na_2S_2_O4 conveniently in high yield.Their corresponding alkenol and 2,4-dinitrophenylhydrazone were also synthesized.