Rhodia Polyamide Intermediates

Rhodia Chimie

Rhodia Limited

Rhodia Polyamides Intermediates

Rhodia Polymide Intermediates

Jean-Christophe Galland

Blaise Didillon

Philippe Marion

Damien Bourgeois

Paolo Burattin

Alex Chamard

Jean-Marie Basset

Jean-Pierre Genet

Christophe Vallee

Nathalie Guennouni

Euen Thomas Gunn

Yves Chauvin

Monique Savignac

Gerald Niccolai

Thomas Delacroix

Christine Valerio

The present invention relates to the manufacture of nitrile compounds from unsaturated organic compounds by reaction with hydrogen cyanide. It relates more particularly to the manufacture of nitrile compounds of use in the synthesis of adiponitrile, an important chemical intermediate in the manufacture of major chemical compounds, such as hexamethylenediamine and &#x3b5;-caprolactam. The invention provides a process for the manufacture of organic compounds comprising at least one nitrile functional group by carrying out a hydrocyanation reaction between hydrogen cyanide and an organic compound comprising at least one ethylenic unsaturation. This reaction is carried out in the presence of a catalytic system comprising a metal element chosen from the group consisting of nickel, platinum and palladium and an organophosphorus ligand, the reaction medium additionally comprising an ionic liquid in the liquid state at least at the temperature at which the hydrocyanation reaction is carried out.

Method of producing nitrile compounds

The present invention relates to a process for the preparation of 3-chloropropyldimethylchlorosilane by hydrosilylation reaction in a reaction medium comprising dimethylhydrochlorosilane and allyl chloride, in the presence of a catalytically effective amount of di-&#x3bc;-chlorobis(&#x3b7;-1,5-cyclooctadiene)diiridium, the said process being characterized in that at least one auxiliary in the free or supported state selected from the group of compounds consisting of:

Process for the preparation of halogenoalkyldialkyl chlorosilane

The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Method for making nitrile compounds from ethylenically unsaturated compounds

The present invention relates to a process for hydrocyanating a hydrocarbon-based compound containing at least one ethylenic unsaturation by reaction in liquid medium with hydrogen cyanide in the presence of a catalyst comprising a metal element chosen from transition metals and an organophosphorus ligand, characterized in that the organophosphorus ligand is a monodentate organophosphorus compound. The present invention is in particular useful for the synthesis of adiponitrile from butadiene.

Method of producing nitrile compounds from ethylenically-unsaturated compounds

Making nitrile compounds from ethylenically unsaturated compounds

Process for preparing nitrile compounds from ethylenically unsaturated compounds

The invention concerns a method for hydrocyanation of ethylenically unsaturated organic compounds comprising at least a nitrile function. The invention provides a method for hydrocyanation of an ethylenically unsaturated hydrocarbon compound by reacting in liquid medium the hydrogen cyanide in the presence of a catalyst comprising a metal element selected among transition metals and an organophosphorous ligand, characterised in that the organophosphorous ligand is a furylphosphine. The invention is in particular useful for synthesizing adiponitrile from butadiene.

The invention concerns a method for hydrocyanation of ethylenically unsaturated organic compounds into compounds comprising at least a nitrile function. More particularly, it concerns a method for hydrocyanation of organic compounds comprising at least a ethylenical bond by reacting hydrogen cyanide, in the presence of a catalytic system comprising a transition metal and an organophosphorus ligand. The organophosphorus ligand is a compound with monophosphanorbornadiene structure. The invention concerns in particular hydrocyanation of butadiene into adiponitrile.

Hydrocyanation method for ethylenically unsaturated organic compounds

A process for the production of allyl succinic anhydride comprising reacting a mixture of propene with maleic anhydride in the presence of a catalyst comprised of an alkyl tin chloride as provided. The process can be run efficiently at temperatures below about 200&#xb0; C. without and the formation of polymer or decomposition by-products.

Process for making allyl succinic anhydride

Process for preparing a polyaromatic compound

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Lyons, France

Jean-Christophe Galland