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1. (WO1979000219) PROCESS FOR SELECTIVE MONOETHERIFICATION OF PYROCATECHIN
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000219 International Application No.: PCT/FR1978/000035
Publication Date: 03.05.1979 International Filing Date: 18.10.1978
IPC:
C07C 43/23 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
43
Ethers; Compounds having groups, groups or groups
02
Ethers
20
having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
23
containing hydroxy or O-metal groups
Applicants:
Inventors:
Priority Data:
773234020.10.1977FR
Title (EN) PROCESS FOR SELECTIVE MONOETHERIFICATION OF PYROCATECHIN
(FR) PROCEDE DE MONOETHERIFICATION SELECTIVE DE LA PYROCATECHINE
Abstract:
(EN) Process for preparing O-methallyloxyphenol by selective monoetherification of pyrocatechin with methallyl chloride. It consists of the etherification of pyrocatechin with methallyl chloride in an aprotic solvent medium in presence of a carbonate or an acid carbonate of an alkali metal. O-methallyloxyphenol can be used as starting material for the preparation of dihydro methylcarbamate-2, 3 dimethyl-2, 2 benzofuramyl-7, polyvalent insecticide known by the name of carbofuran.
(FR) Procede de preparation de l"O-methallyloxyphenol par monoetherification selective de la pyrocatechine par le chlorure de methallyle. Il consiste a effectuer l"etherification de la pyroeatechine par le chlorure de methallyle dans un milieu solvant aprotique en presence d"un carbonate ou d"un carbonate acide de metal alcalin. L"O-methallyloxyphenol est utilisable comme matiere de depart pour la preparation du methylcarbamate de dihydro-2, 3 dimethyl-2, 2 benzofuranyl-7, insecticide polyvalent connu sous le nom de carbofuran.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)