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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 FR6924924ApriorityCriticalpatent/FR2053888A5/en
Application grantedgrantedCritical
Publication of FR2053888A5publicationCriticalpatent/FR2053888A5/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Para-methylsulphonylbenzaldehyde, useful as an intermediate for medicines such as thiamphenicol, is prepd. by hydrolysis of para-methylsulphonylbenzylidene bromide with water optionally in the presence of acid or alkali. The starting material may be prepd. by reaction of methyl p-tolyl sulphone with bromine.
PROCEDURE FOR PRODUCTION OF FORTENT PLATE, WITH JOINT OR NO TENDENCE TO ABSORP SPOTS, BY TREATMENT WITH A WATER SOLUTION OF ITACONIC ACID-ACRYL-NITRIL COPY AND CHROMIC ACID OR CHROMIC ACID