Fluoromethanes synthesis

The mtroducuon of a tnfluoromethanethio group into an aromatic nng has a synthetic importance The reaction of tnfluoromethanethio copper with aryl bro mides and iodides provides a convenient route to the synthesis of aryltn fluoromethane sulfides The reaction is not sensitive to the type of substituents or the aromahc nucleus Selectivity can be achieved accordmg to the type of halogen or the aromatic rmg, because iodides react at lower temperatures than bromides, whereas chlondes do not react [f J] (equation 12) (Table 5)... 

The first synthesis of an organic fluoride was devised by the French chemists, Dumas and Peligot.10 During a detailed study of the chemistry of methanol (wood spirit), dimethyl sulfate and anhydrous potassium fluoride were heated together in a glass vessel. Fluoromethane was formed, and characterized, its vapor density being determined (presumably by Dumas method). 

Martynov, B.L, Sokolov, V.B., Aksincnko, A.Y., Goreva, T.V., Epishina, T.A., and Pushin, A.N., Convenient method for the synthesis and some transformations of the lithium salt of Zw. vtdiclhoxy-phosphoryl)fluoromethane, Izv. Akad. Nauk, Ser. Khim., 2039, 1998 Russ. Chem. Bull. (Engl. Transl), 1983, 1998. 

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