from chlorinated methanes and ethanes. Written below is the synthesis of chlorodifluoromethane from chloroform:
:Brominated derivatives are generated by free-radical reactions of hydrochlorofluorocarbons, replacing C-H bonds with C-Br bonds. The production of the anesthetic 2-bromo-2-chloro-1,1,1-trifluoroethane ("halothane") is written out below:
:

Applications

CFCs

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