Process for producing 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-die

Details Process for producing 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-die Process for producing 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-die

1982-12-21

1984-10-16

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4530

Patent

active

044776829

ABSTRACT:
A process for the preparation of 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-diene-1-one from 2,4,6-trimethylphenol is disclosed, comprising reacting 2,4,6-trimethylphenol with an aqueous solution or suspension of hypohalogenous acid or salt thereof in an aqueous medium or mixed medium of water and specific organic solvents. This process enables to prepare 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-diene-1-one, which is a precursor for 2,3,5-trimethylhydroquinone, a starting material for the preparation of vitamin E, by a simplified operation, safely and at high yields.

REFERENCES:
patent: 2662918 (1953-12-01), Spaulding
patent: 3631185 (1971-12-01), Laufer
patent: 3895069 (1975-07-01), Halstead
Fieser et al., "Reagents for Organic Synthesis", pp. 487-489, (1976).

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