C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/526.1
C07D 203/08 (2006.01)
Patent
CA 1145359
ABSTRACT OF THE DISCLOSURE Production of DL-serine by heating a strong acid type cation exchange resin having aziridine-2-carboxylic acid absorbed thereto. Specifically, an industrial process for producing DL-serine is provided which comprises treating an alpha-halogeno-beta-aminopropionitrile or its mineral acid salt in water or a water-containing organic solvent with an alkali or alkaline earth metal hy- droxide to form an alkali or alkaline earth metal aziridine-2-carboxylate, treat- ing the reaction mixture with a strong acid type cation exchange resin to cause adsorption of aziridine-2-carboxylic acid, and thereafter heating the cation- exchange resin.
366383
Higuchi Chojiro
Kato Toshio
Kawashima Nobuyuki
Mita Ryuichi
Nagai Shosuke
Mitsui Chemicals Incorporated
Smart & Biggar
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