Method of producing salts of 1,3-dioxolane-4-carboxylic acids an

Details Method of producing salts of 1,3-dioxolane-4-carboxylic acids an Method of producing salts of 1,3-dioxolane-4-carboxylic acids an

1985-12-13

1988-05-17

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549453, 424 70, C07D31700

Patent

active

047452005

ABSTRACT:
A new process for the production of salts of 1,3-dioxolane-4-carboxylic acid corresponding to the following formula ##STR1## using as a starting material an isomer mixture of a 4-hydroxymethyl-1,3-dioxolane and a 5-hydroxy-1,3-dioxane obtained by reacting glycerin with an aldehyde or ketone having the formula R.sup.1 R.sup.2 CO. The 4-hydroxymethyl-1,3-dioxolane may be selectively oxidized from the isomer mixture in the presence of a platinum metal catalyst at an alkaline pH. The unreacted 5-hydroxy-1,3-dioxane may be extracted from the reaction mixture and the 1,3-dioxolane-4-carboxylic acid salt isolated in pure form.

REFERENCES:
patent: 3595909 (1971-07-01), Sheldon
patent: 3657277 (1972-04-01), Ryrfors
patent: 3896115 (1975-07-01), Wat
Chemische Berichte 109, No. 11, 1976, pp. 3707-3727.
Angewandte Chemie, 69, No. 18/19 1957, pp. 600-608.

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