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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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Application filed by Sumitomo Chemical Co LtdfiledCriticalSumitomo Chemical Co Ltd
Priority to JP7035977ApriorityCriticalpatent/JPS545978A/en
Publication of JPS545978ApublicationCriticalpatent/JPS545978A/en
PURPOSE: To prepare the hydroxypyridinecarboxylic acid, useful as intermediates for penicillin or cephalosporins, in high yield by reaction of hydroxypyridine alkali metal salt with carbon dioxide under pressure on heating in the presence of a specific alkali metal.
COPYRIGHT: (C)1979,JPO&Japio
JP7035977A1977-06-131977-06-13Preparation of hydroxypyridinecarboxylic acid
PendingJPS545978A
(en)
Process for the recovery of 2-hydroxynaphthaline-3-carboxylic acid from the reaction products of the alkali metal salts obtained from 2-hydroxynaphthaline with carbon dioxide