Methods for preparing l-2-oxothiazolidine-4-carboxylate and its

Details Methods for preparing l-2-oxothiazolidine-4-carboxylate and its Methods for preparing l-2-oxothiazolidine-4-carboxylate and its

1997-11-10

1999-02-09

Richter, Johann

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D27704

Patent

active

058696792

ABSTRACT:
Method for synthesizing L-2-oxothiazolidine-4-carboxylate and its acid, L-2-oxothiazolidine-4-carboxylic acid. The present invention involves the separation of phenol from a reaction mixture containing L-2-oxothiazolidine-4-carboxylate and phenol. In the present method a reaction mixture containing phenol, L-2-oxothiazolidine-4-carboxylate, and chloride salt, is contacted with a phenol adsorbing adsorption resin, the adsorption resin comprising a polymer having a polyethylene backbone. The adsorption resin is capable of adsorbing substantially all of the phenol while not adsorbing substantial amounts of the L-2-oxothiazolidine-4-carboxylate from the reaction mixture.

REFERENCES:
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patent: 4546079 (1985-10-01), Metzger et al.
patent: 4647571 (1987-03-01), Meister et al.
Boettcher et al., Methods in Enzym., 113(5), 458-460, 1985.
Kaneko et al., Bull. Chem. Soc. Japan, 37(2), 242-44, 1964.

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