Reaction of 1,2-dichloro-1,1,2-trifluoro-2-methoxyethane with anhydrous hyd
rogen fluoride (AHF) was investigated in the presence of metal fluorides su
pported on porous aluminum fluoride (PAF). 2-Chloro-1,1,2,2-tetrafluoro-2-m
ethoxyethane, a new compound, was prepared in 85% yield in the presence of
CoF2/PAF. Methyl chlorodifluoroacetate was also obtained and its formation
was discussed. (C) 2001 Elsevier Science B.V. All rights reserved.