Process for preparing hydrofluoroethers

Details Process for preparing hydrofluoroethers Process for preparing hydrofluoroethers

2006-11-28

2006-11-28

Keys, Rosalynd (Department: 1621)

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

Organic compounds

Oxygen containing

C568S616000, C568S677000, C568S683000, C562S849000, C562S856000

Reexamination Certificate

active

07141704

ABSTRACT:
Process for obtaining hydrofluoroethers of formula (I):in-line-formulae description="In-line Formulae" end="lead"?A-(Rf)n0—CF(Rf1)—O—Rh  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein a mono- or bifunctional carbonyl compound of formula (IV):in-line-formulae description="In-line Formulae" end="lead"?B—Rf—C(O)Rf1  (IV)in-line-formulae description="In-line Formulae" end="tail"?is reacted with at least one equivalent of a fluoroformate of formula (III)in-line-formulae description="In-line Formulae" end="lead"?R—OC(O)F  (III)in-line-formulae description="In-line Formulae" end="tail"?in the presence of an ion fluoride compound (catalyst) and of a dipolar aprotic organic compound, liquid and inert under the reaction conditions.

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