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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A novel process for producing p-methoxybenzoid acid, which comprises the following steps: (a) reacting phenol with alkaline metal to form phenol salt of the following formula (I): (see claim 1(I)) (in which M is an alkaline metal), undergoing carbonization reaction with carbon dioxide in organic solvent substantially free of water to obtain formula (II) compound: (see claim 1(II)) (in which M is an alkaline metal); and (b) reacting formula (II) compound with dimethyl sulfate to undergo methylation reaction in weak alkaline aqueous medium, followed by acidifying the product to obtain a compound with the following formula (III): (see claim 1(III)).
TW83106022A1994-06-301994-06-30Novel process for producing p-methoxybenzoic acid
TW247905B
(en)