C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/12 (2006.01) C07F 9/14 (2006.01)
Patent
CA 2362069
The present invention provides a process for producing phosphorohalidate characterized in that a crude reaction product obtained by reacting a phosphorus oxyhalide with an aromatic hydroxy compound in the presence of a Lewis acid catalyst is purified by distillation in the presence of an alkali metal salt. The process of the invention produces a high-purity phosphorohalidate in high yield which contains no impurities such as the phosphorus oxihalidate and aromatic hydroxy compound used as starting materials and the catalyst.
La présente invention concerne un procédé de production de phosphorohalidate caractérisé en ce que un produit de réaction brut obtenu en mettant à réagir un oxyhalogénure de phosphore avec un composé hydroxy aromatique, en présence d'un catalyseur d'acide de Lewis, est purifié par distillation en présence d'un sel de métal alcalin. Grâce à ce procédé, on obtient un haut rendement de phosphorohalidate de grande pureté exempt d'impuretés, comme par exemple l'oxyhalogénure de phosphore et le composé hydroxy aromatique, utilisés comme matière premières, et le catalyseur.
Daihachi Chemical Industry Co. Ltd.
Marks & Clerk
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