Process for the preparation of...

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 29/38 (2006.01) C07C 33/46 (2006.01)

Patent

CA 2064864

A method for synthesizing 1,1-bis(chlorophenyl)2,2,2-trichloroethanol (dicofol) from chloral and chlorobenzene, wherein the acid by-products generated during the condensation of the chloral and the chlorobenzene are used as a reaction medium in the final stage of the dicofol synthesizing process.

TEXTE POUR DEPOT ETRANGER ABREGE DU CONTENU TECHNIQUE DE L'INVENTION PROCEDE DE PREPARATION DUE 1,1-BIS (CHLOROPHENYL) -2,2,2 TRICHLOROETHANOL Société dite : ATOCHEM La Défense 10 4 & 8 Cours Michelet 92800 PUTEAUX Mandataire : Henry NEEL Inventeurs : Jaume CASTELLA SOLA Jaime PALENCIA ADRUBAU Raymond COMMANDEUR Bernard GORNY L'invention concerne un procédé de synthèse du 1,1- bis(chlorophényl)2,2,2-trichloroéthanol (dicofol), à partir de chloral et de chlorobenzène dans lequel les sous-produits acides générés pendant la condensation du chloral et du chlorobenzène sont utilisés comme milieu réactionnel de la dernière étape de synthése du dicofol.

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