Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof
Patent
1993-11-08
1995-02-21
Cintins, Marianne M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus acids or salts thereof
C07C 6200
Patent
active
053918169
ABSTRACT:
A process for forming 1-phenylvinyl-1-phosphonic acid utilizes reacting a mixture of phosphorus trihalide, such as phosphorus trichloride, and acetophenone with water, under conditions in which the water is gradually added to the mixture with cooling to form a reaction mixture, which can be sparged of excess acetophenone with aqueous acid while under vacuum, comprising the 1-phenylvinyl-1-phosphonic acid. This product can be recovered from the reaction mixture by recrystallization from aqueous mineral acid, such as hydrochloric acid.
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Akzo Nobel N.V.
Cintins Marianne M.
Fennelly Richard P.
Mac Miller Keith
Morris Louis A.
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