| abstract |
The invention relates to a method of preparing α,β-difluoroacrylic acid and α,β-alkyl difluoroacrylates. The inventive method consists in: preparing 2,3-difluoro-2,3-dichloropropanol (I) by radical telomerisation of CFCl=CFCl with CH3OH; oxidising (I) in order to obtain 2,3-difluoro-2,3-dichloropropanoic acid (II); and treating (II) with Zn in order to dechlorinate and, optionally, esterify the acid function before or after the dechlorination step. |