METHOD OF PRODUCING 2,3,3,3-TETRAFLUOROPROPENE Russian patent published in 2012 - IPC C07C17/20 C07C17/04 C07C19/08 C07C21/18 C07C19/10

Abstract RU 2463285 C2

FIELD: chemistry.

SUBSTANCE: invention relates to versions of producing 2,3,3,3-tetrafluoropropene (1234yf). One of the versions involves (a) contacting 1,1,1-trifluoro-2,3-dichloropropane (243 db) with hydrogen fluoride (HF) in the presence of a zinc-chromium catalyst to form a compound of formula CF₃CHFCH₂X, where X is Cl or F; and (b) dehydrohalogenation of the compound of formula CF₃CHFCH₂X to form 1234yf.

EFFECT: use of the present method enables to obtain 2,3,3,3-tetrafluoropropene using only readily available starting materials and enables to avoid toxic by-products.

56 cl, 5 ex, 1 tbl

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RU 2 463 285 C2

Authors

Smit Dzhon Uil'Jam

Makginess Klehr

Shehrrat Ehndrju Pol

Dates

2012-10-10—Published

2009-04-09—Filed