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2 035 449

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C1

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IPC

(21) (22)

Application

5068311/04, 1992-08-25

(22)

Actual filing date

1992-08-25

(45)

Published

1995-05-20

(72)

Inventor

Zapevalov A.Ja.Gorbunova T.I.Saloutin V.I.

(73)

Holder

Otdel Tonkogo Organicheskogo Sinteza Instituta Organicheskoj Khimii Ural'Skogo Otdelenija Ran

METHOD OF SYNTHESIS OF TRIFLUOROACRYLIC ACID FLUOROANHYDRIDE Russian patent published in 1995 - IPC

Abstract RU 2035449 C1

FIELD: organic chemistry. SUBSTANCE: product: trifluoroacrylic acid fluoroanhydride, empirical formula is C3F4O, b. p. is 25.5-26 C, yield is 90-95%. Reagent 1: perfluoroallylfluorosulfate of the formula: CF2= CF-CF2-O-S(O)2F. Reagent 2: potassium and/or sodium bromide. Reaction conditions: in the medium of compound of the formula: CH3O(CH2CH2O)nCH3 where n = 1-4, or in sulfolan, at 20-22 C. EFFECT: improved method of synthesis.

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RU 2 035 449 C1

Authors

Zapevalov A.Ja.

Gorbunova T.I.

Saloutin V.I.

Dates

1995-05-20—Published

1992-08-25—Filed

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