DIMETHYLAMINO-2 PARAHYDROXYPHENYL-2 SODIUM ACETATE, PROCESS FOR THE PREPARATION THEREOF AND ITS APPLICATION TO THE MANUFACTURE OF PARAHYDROXYBENZYLE CYANIDE

摘要

P THE INVENTION CONCERNS DIMETHYLAMINO-2 PARAHYDROXYPHENYL-2 ACETATE OF CRYSTALLIZED SODIUM ANHYDROUS OR WITH TWO WATER MOLECULES. ITS MANUFACTURING PROCESS CONSISTS OF HEATING PARAHYDROXYMANDELIC ACID IN DIMETHYLFORMAMIDE IN THE PRESENCE OF A CATALYTIC QUANTITY OF A STRONG ACID, REACTION FOLLOWED BY NEUTRALIZATION WITH SODIUM HYDROXIDE. IT IS APPLIED TO THE MANUFACTURE OF PARAHYDROXYBENZYLE CYANIDE BY REACTION WITH 2-HYDROXY ISOBUTYRONITRILE. /P