Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-06-06
2006-06-06
Dentz, Bernard (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S319000, C568S322000, C568S397000, C568S415000
Reexamination Certificate
active
07057079
ABSTRACT:
A method of producing a halogen alkenone ether by attaching carboxylic acid halogenides or carboxylic acid anhydrides to a vinyl ether. According to the invention the method is carried out in the presence of an onium salt of a carbonic acid which can be regenerated. The resulting product is obtained in high yields. Alternatively, pyridine which is substituted by one, two or three C1–C3 alkyl groups or other onium salts can be used.
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Braun Max
Claassen Uta
Crowell & Moring LLP
Dentz Bernard
Solvay Fluor und Derivate GmbH
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