Solvay & Cie (societe Anonyme)

Solvay (societe Anonyme)

Solvay & Cie

Reilly Chemicals S.a.

Solvay Sa

James Franklin

Francine Janssens

Jean-Marie Yernaux

Jean-Paul Schoebrechts

Rene Walraevens

Charles Dogimont

Véronique Mathieu

Rene Wairaevens

The present invention relates to a fluorination method for the synthesis of halofluoroorganic compounds which can be used, inter alia, as precursors in the synthesis of 2,3-unsaturated fluoroorganic carbonyl compounds comprising a fluorine substituent in the 2 position.

Process for the synthesis of fluoroorganic compounds

The invention concerns a process for the preparation of chlorinated derivatives of pyridine compounds by a chlorination reaction of the corresponding pyridine compounds with molecular chlorine, carried out in the gaseous phase by means of bis(trichloromethyl)sulfone as a free radical initiator. The obtained chlorinated derivatives of pyridine compounds, such as 2,6-dichloropyridine, can be used as chemical intermediates.

Process for the preparation of chlorination derivatives of pyridine

Process for the preparation of 1,1-dichloro-1-fluoroethane

1-Chloro-1,1-difluoroethane is prepared by reacting hydrogen fluoride with vinylidene chloride, in a liquid medium containing preferably at least 40 mol % 1,1-dichloro-1-fluoroethane.

Process for the manufacture of 1-chloro-1,1-difluoroethane

The invention relates to a process for the production of chloroform from carbon tetrachloride using a catalytic composition comprising a support on which a hydrogenating metal is deposited, the support comprising an alkali metal aluminate or alkaline earth metal aluminate. The invention also relates to a catalytic composition comprising a support on which platinum is deposited, the support comprising an aluminate having an inverse spinel structure.

Process for the production of chloroform from carbon tetrachloride,

The invention relates to a process for the manufacture of a fluorinated hydrocarbon by the reaction of hydrogen fluoride with an unsaturated chlorinated hydrocarbon in the liquid phase in the presence of a catalyst constituted by a tin compound and of an additive constituted by an organophosphorus compound.

Process for the manufacture of a fluorinated hydrocarbon

The liquid phase dehydrochlorination of haloalkanes is performed with an initiator mainly comprising decachlorobutane and/or octachloro-1-butene. The process is applicable, in particular, to the production of chloroethylenes from the corresponding polychloroethanes.

Liquid phase process for dehydrochlorination of haloalkanes in the

The reactions of chlorination of the pyridine compounds are conducted by means of molecular chlorine, with the use, as free-radical forming initiator, of a decachlorobutane or an octachlorobutene such as octachlorobutene-1 or a crude mixture of these chlorine-containing products obtained by additive chlorination of hexachlorobutadiene-1,3. Good rates of conversion are obtained, and good yields at moderate temperatures. The method is applied, for example, to the chlorination of pyridine and beta-picoline.

Method for preparing chlorine-containing derivatives of pyridine

The substitution chlorination reactions of organic compounds are carried out by means of molecular chlorine, using, as a radical initiator, decachlorobutane or an octachlorobutane such as octachlorobut-1-ene or a mixture containing these two products. Good degrees of conversion and good yields are obtained at moderate temperatures. The process is, for example, applicable to the substitution chlorination of benzene and of chloroform.

Process for carrying out substitution chlorination reactions of organic

The pyrolytic dehydrochlorination of haloalkanes is carried out with an initiator comprising chiefly decachlorobutane and octachloro-1-butene. The process can be applied particularly to the production of chloroethylenes from the corresponding polychloroethanes.

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James Franklin