Abstract: The present invention relates to a process for the preparation of trifluoromethylated derivatives of the formula CF.sub.3 CCl.dbd.CHCH.sub.2 OC(.dbd.O)R, wherein R is unsubstituted or substituted C.sub.1 to C.sub.6 straight chain or branched alkyl, unsubstituted or substituted C.sub.3 to C.sub.7 cycloalkyl, unsubstituted or substituted C.sub.2 to C.sub.12 alkenyl, a benzyl group unsubstituted or substituted with R', a phenyl group unsubstituted or substituted with R'; R' is an unsubstituted or substituted C.sub.1 to C.sub.6 straight chain or branched alkyl; and wherein where R and/or R' are substituted each is substituted with R', by reaction of HCFC-353 with carboxylic acid salts. The trifluoromethylated derivatives, particularly CF.sub.3 CCl.dbd.CHCH.sub.2 OC(.dbd.O)CH.sub.3, are versatile intermediates for the synthesis of a wide variety of trifluoromethylated organic compounds, which find utility as pharmaceuticals, agricultural chemicals, and materials such as liquid crystals.