Method for producing fluorinated organic compounds

Details Method for producing fluorinated organic compounds Method for producing fluorinated organic compounds

2008-08-01

2011-12-06

Parsa, Jafar (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S153000

Reexamination Certificate

active

08071825

ABSTRACT:
Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2(1234yf). In certain preferred embodiments the processes comprise first exposing a compound of Formula (IA)in-line-formulae description="In-line Formulae" end="lead"?C(X)2═CClC(X)3  (IA)in-line-formulae description="In-line Formulae" end="tail"?where each X is independently F, Cl or H, preferably CCl2═CClCH2Cl, to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce at least one chlorofluoropropane, preferably in accordance with Formula (IB):in-line-formulae description="In-line Formulae" end="lead"?CF3CClX′C(X′)3  Formula (IB)in-line-formulae description="In-line Formulae" end="tail"?where each X′ is independently F, Cl or H, and then exposing the compound of Formula (IB) to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce a compound of Formula (II)in-line-formulae description="In-line Formulae" end="lead"?CF3CF═CHZ  (II)in-line-formulae description="In-line Formulae" end="tail"?where Z is H, F, Cl, I or Br.

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patent: 2007079431 (2007-07-01), None
Banks et al., Preparation of 2,3,3,3-Tetrafluoropropene From Trifluoroacetylacetone and Sulphur Tetrafluoride, Journal of Fluorine Chemistry, 1997, 171-174, vol. 82, Manchester, UK.

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