Process for preparing vinyl phenol

Details Process for preparing vinyl phenol Process for preparing vinyl phenol

1981-02-05

1982-02-23

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 3906, C07C 3918

Patent

active

043169953

ABSTRACT:
Described in a process for preparing food grade paravinyl phenol using as a starting material parahydroxybenzaldehyde whereby the parahydroxybenzaldehyde is first reacted with malonic acid and is then decarboxylated in one step to form an impure paravinyl phenol. The impure paravinyl phenol is then acetylated to form paraacetoxy phenol which is separated from the impurities and hydrolyzed thereby yielding food grade, substantially pure, paravinyl phenol.

REFERENCES:
patent: 4195041 (1980-03-01), Kawamura
Fujimaki et al., "Agric. Biol. Chem.", 41 (9), 1721-1725 (1977).
Walradt et al., "J. Agr. Food Chem.", vol. 18, No. 5 (1970), pp. 926-928.
Lukin et al., "J. Organic Chemistry," vol. 23 (1958), p. 1007.
Pyysalo et al., "Lebensmitte-Wihenschaft Tech., vol. 10 (1977), p. 36.
Critical Review in Food, "Science and Nutrition", vol. 10 (4), 1978, pp. 335-336.
Carson et al., "J. Org. Chem.", vol. 23, 1958.
Walradt et al., "Ag. and Food Chem.", vol. 19, (5), pp. 972-979 (1971).
Lloyd et al., "Tobacco International", 125 (Summary of Coreste Symposium, 1974, Montreux, Switzerland.
Lloyd et al., "Tobacco Science", XX:43-51 (1976).

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