SYNTHESIS AND APPLICATIONS OF 2-OXO-4-METHYLTHIOBUTYRIC ACID, ITS SALTS AND ITS DERIVATIVES

摘要

28 ABSTRACT SYNTHESIS AND APPLICATIONS OF 2-OXO-4-METHYLTHIOBUTYRIC ACID, ITS SALTS AND ITS DERIVATIVES THE INVENTION RELATES TO A PROCESS FOR PREPARING 2-OXO- 5 4-METHYLTHIOBUTYRIC ACID (1), ITS SALTS AND ITS DERIVATIVES S _@_@Y R 0 IN WHICH R REPRESENTS A GROUP CHOSEN IROM COOH, COOR', NH., NHR' OR NR'R", WHERE R' AND R" ARE CHOSEN, INDEPENDENTLY OF ONE ANOTHER, FROM THE GROUP OF LINEAR OR BRANCHED ALKYL RADICALS HAVING FROM I TO 12 CARBON ATOMS AND CYCLOALKYL RADICALS HAVING FROM 3 TO 12 CARBON 10 ATOMS, ACCORDING TO WHICH PROCESS BUT-3-ENE-1,2-DIOL (11) IS CATALYTICALLY AND SELECTIVELY OXIDIZED TO GIVE 2-OXOBUT-3-ENOIC ACID (111) AND METHYL MERCAPTAN IS SELECTIVELY CONDENSED WITH 2-OXOBUT-3-ENOIC ACID (111). 2-0XO-4-METHY1THIOB UTYRIC ACID (0, ITS SALTS AND ITS DERIVATIVES 15 ARE USED AS FOOD SUPPLEMENT, IN PARTICULAR IN ANIMAL NUTRITION FIG. I