Method for the preparation of a pure alkali metal benzoate and b

Details Method for the preparation of a pure alkali metal benzoate and b Method for the preparation of a pure alkali metal benzoate and b

1980-05-16

1981-10-20

Siegel, Alan

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

Organic compounds

Carboxylic acids and salts thereof

568814, C07C 5142, C07C 2704

Patent

active

042962455

ABSTRACT:
The invention relates to a method for the preparation of a pure alkali metal benzoate, specifically of a pure alkali metal benzoate from benzyl benzoate prepared by oxidation of an alkyl benzene compound, specifically toluene, with a gas containing molecular oxygen, besides benzyl alcohol. Very specifically the invention relates to a method for the preparation of sodium benzoate besides benzyl alcohol.
For this purpose crude benzyl benzoate is subjected to a treatment with a reducing substance to convert impurities, under such circumstance that, in the process, there will be no conversion of any substantial quantity of benzyl benzoate. Subsequently the benzyl benzoate is saponified to the alkali metal benzoate and benzyl alcohol.

REFERENCES:
patent: T880007 (1970-11-01), Paris
patent: 3642883 (1972-02-01), Jackson
patent: 4092353 (1978-05-01), Wolf

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