| abstract |
A SINGLE ENANTIOMER OF ALPHA-ARYLALKANOIC ACIDS (I), OPTICALLY ACTIVE, IS OBTAINED, WHERE AR IS ARYL AND R ALKYL C1-4, BY HALOGENATION, IN THE ALPHA POSITION WITH RESPECT TO CETALIC, FROM AN ARILALKYLKETAL (II), WHERE THEY ARE OH, C1-6 CYCLOALKYL AND OTHERS, THROUGH AQUIRAL HALOGENANT SYSTEM, SUCH AS BROMINE, QUATERNARY AMMONIUM PERHALIDES, SULFURYL CHLORIDE AND OTHERS, IN INERT ORGANIC SOLVENT, BETWEEN C40 AND 20JC ALZCETIMERICA DE ALZCETIMERICA, BETWEEN C40 AND 20JC ) ESSENTIALLY CONSTITUTED BY AN ENANTIOMER, REORDING THIS MIXTURE IN AN AQUEOUS MEDIUM AT PH 4-6 AND BETWEEN 20 AND 100Y, BY TREATMENT IN TWO STAGES WITH AN ORGANIC MEDIA FREE OF ALCOHOLS AND GLYCOLS WITH SEPARATION OF A COMPOUND (IV). THEY PRESENT ANTIPIRETIC AND ANTI-INFLAMMATORY PROPERTIES. |