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1. WO2000040535 - METHOD FOR PREPARING A BENZYLIC-TYPE ETHER

Publication Number WO/2000/040535
Publication Date 13.07.2000
International Application No. PCT/FR2000/000024
International Filing Date 07.01.2000
Chapter 2 Demand Filed 24.07.2000
IPC
C07C 41/09 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
09by dehydration of compounds containing hydroxy groups
C07C 45/46 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
45Preparation of compounds having C=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
45by condensation
46Friedel-Crafts reactions
CPC
C07C 41/09
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
09by dehydration of compounds containing hydroxy groups
C07C 41/30
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
18by reactions not forming ether-oxygen bonds
30by increasing the number of carbon atoms, e.g. by oligomerisation
C07C 45/46
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
45Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
45by condensation
46Friedel-Crafts reactions
Y02P 20/582
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
50Improvements relating to the production of products other than chlorine, adipic acid, caprolactam, or chlorodifluoromethane, e.g. bulk or fine chemicals or pharmaceuticals
58Recycling
582of unreacted starting or intermediate materials
Applicants
  • RHODIA CHIMIE [FR/FR]; 25, quai Paul Doumer F-92408 Courbevoie Cedex, FR (AllExceptUS)
  • JACQUOT, Roland [FR/FR]; FR (UsOnly)
  • SPAGNOL, Michel [FR/FR]; FR (UsOnly)
Inventors
  • JACQUOT, Roland; FR
  • SPAGNOL, Michel; FR
Agents
  • DUTRUC-ROSSET, Marie-Claude; Rhodia Services Direction de la Propriété Industrielle 25, quai Paul Doumer F-92408 Courbevoie Cedex, FR
Priority Data
99/0017108.01.1999FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR PREPARING A BENZYLIC-TYPE ETHER
(FR) PROCEDE DE PREPARATION D'UN ETHER DE TYPE BENZYLIQUE
Abstract
(EN)
The invention concerns a method for preparing a benzylic-type ether from an aromatic compound. The inventive method for preparing a benzylic-type ether from an aromatic compound is characterised in that it consists in: in a first step, acylating an aromatic compound by reacting said aromatic compound with an acylating agent, in the presence of an efficient amount of zeolite or a Friedel-Crafts catalyst leading to a ketonic compound; in a second step, reducing the carbonyl group into carbinol leading to a benzylic alcohol; in a third step, etherifying the hydroxyl group, by reacting the benzylic alcohol with another alcohol, in the presence of an efficient amount of zeolite.
(FR)
La présente invention a pour objet un procédé de préparation d'un éther de type benzylique à partir d'un composé aromatique. Le procédé de préparation d'un éther de type benzylique à partir d'un composé aromatique selon l'invention est caractérisé par le fait qu'il consiste: dans une première étape, à effectuer l'acylation d'un composé aromatique par réaction dudit composé aromatique avec un agent d'acylation, en présence d'une quantité efficace d'une zéolithe ou d'un catalyseur de Friedel-Crafts conduisant à un composé cétonique; dans une deuxième étape, à effectuer la réduction du groupe carbonyle en groupe carbinol conduisant à un alcool de type benzylique; dans une troisième étape, à effectuer l'éthérification du groupe hydroxyle, par réaction de l'alcool de type benzylique avec un autre alcool, en présence d'une quantité efficace d'une zéolithe.
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