Method for fluorode carboxylation

C - Chemistry – Metallurgy – 07 – C

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C07C 41/01 (2006.01) C07C 17/363 (2006.01) C07C 19/08 (2006.01) C07C 41/22 (2006.01) C07C 43/12 (2006.01) C07C 51/367 (2006.01)

Patent

CA 2027522

The present invention is directed to a method for replacing a carboxylic acid group with a fluorine group in a halogenated aliphatic carboxylic acid compound having the formula, R-COOH, to prepare a fluorinated product having the formula, R-F, wherein R is a halogenated aliphatic group including straight- and branched-chain aliphatic groups selected from the group consisting of halogenated aliphatic and halogenated alkoxy-substituted aliphatic groups, wherein the method comprises the steps of (a) reacting the halogenated aliphatic carboxylic acid compound with bromine trifluoride, and (b) recovering the fluorinated product.

La présente invention porte sur une méthode permettant de remplacer un groupe carboxylique par un groupe fluor dans un composé d'acide carboxylique aliphatique halogéné de formule R-COOH, en vue de préparer un produit fluoré de formule R-F, dans laquelle R est un groupe aliphatique halogéné comprenant des groupes aliphatiques linéaires et ramifiés choisis parmi un groupe constitué de groupes aliphatiques halogénés et de groupes aliphatiques substitués par un alkoxy halogéné, dans laquelle la méthode comprend les étapes suivantes: (a) réaction du composé d'acide carboxylique aliphatique halogéné avec le trifluorure de brome et (b) récupération du produit fluoré.

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