Process for the synthesis of o-isopropoxyphenol

Details Process for the synthesis of o-isopropoxyphenol Process for the synthesis of o-isopropoxyphenol

1985-01-10

1986-07-08

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4116

Patent

active

045994617

ABSTRACT:
A process for preparing o-isopropoxyphenol (I) by means of the reaction: ##STR1## in which X is a halogen atom and in which the pyrocatechol (II) is reacted with the isopropyl halide (III) in the presence of an alkaline base in the solid state and of a solid-liquid phase transfer catalyst, in a reaction medium constituted by one or more organic solvents.
The catalyst is constituted by a quaternary ammonium or phosphonium salt.
The reaction is conducted in a nitrogen atmosphere, at atmospheric pressure, under agitation, at a temperature of preferably between 50.degree. C. and 130.degree. C.

REFERENCES:
patent: 3927118 (1975-12-01), Ozretich
patent: 4252985 (1981-02-01), Rakoutz
patent: 4263462 (1981-04-01), Michelet et al.

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