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Solvent effects in the fluorination of 1,2-dichloro-1,1-difluoroethane (R-132b) to 2-chloro-1,1,1-trifluoroethane (R-133a)

“…First, a molecule of HF adds across the TCE double bond to produce 1,1,2-dichloro-1-fluoroethane (R-131a). Second, direct fluorine-for-chlorine exchange converts R-131a to 1,2-dichloro-1, 1-difluoroethane (R-132b) [7][8][9]. The third reaction is another fluorine-for-chlorine exchange that converts R-132b to R-133a.…”