Procedure for the preparation of new derivatives of the alpha-mercapto-carboxºlico acid (Machine-translation by Google Translate, not legally binding)

摘要

Process for the preparation of new derivatives of the alpha-mercapto-carboxylic acid, of the general formula I ** (See formula) ** in which R1 means hydrogen, an aliphatic, cycloaliphatic, aromatic or araliphatic radical, R2 means hydrogen or a lower alkyl radical, and R3 means a lower alkyl radical, hydrogen, a monovalent cation or the normal equivalent of a polyvalent cation, characterized, that a compound of the general formula II ** (See formula) ** in which R1 and R2 have the indicated significance and R3 'means a lower alkyl radical, it is reacted with an ester capable of reacting, of the 1-adamantanol in the presence of an acid-binding agent, and if desired, the alkylester of the alpha- (adamant-1-ylthio) -carboxylic acid originated is hydrolyzed to reach the acid free or a salt, and if desired the free acid or the salt is transformed with an inorganic or organic base in another salt, or if desired the racemic acid is split into its antipodes. (Machine-translation by Google Translate, not legally binding)