Process for the production of hydroxyanisole and alkylated hydro

Details Process for the production of hydroxyanisole and alkylated hydro Process for the production of hydroxyanisole and alkylated hydro

1984-09-10

1985-08-27

Helfin, Bernard

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

Organic compounds

Oxygen containing

568658, 568782, C07C 4118, C07C 4116, C07C 3700, C07C 3919

Patent

active

045380023

ABSTRACT:
There is disclosed a process for the production of alkylated hydroxyanisoles which consists of dehydrogenating para-isopropylphenol to para-isopropenylphenol which is then reacted with a methylating agent to yield para-isopropenylanisole which is then treated with acidic hydrogen peroxide to yield para-hydroxyanisole which is then treated with an alkylating agent to yield the alkylated hydroxyanisole. The process of this invention is especially useful for the synthesis of the food preservative butylated hydroxyanisole (BHA).

REFERENCES:
patent: 2908718 (1959-10-01), Rosenwald
patent: 4328361 (1982-05-01), Dai
patent: 4346249 (1982-08-01), Krabbenhoft
Balandin et al., Jour. Applied Chem., 12:ii159, (1962).
Corson et al., Jour. Org. Chem., vol. 23, (1958), 544-549.

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