DICHLOROMETHYLENATION OF ESTERS AND LACTONES BY TRIPHENYLPHOSPHINE-CARBON TETRACHLORIDE REAGENT.
Reaction of triphenylphosphine-carbon tetrachloride reagent with esters and lactones produced 1-substituated 2,2-dichlorovinyl ethers.Hydrolysis of these ethers in acidic conditions afforded the dichloromethyl ketones.