ENTHALPIMETRIC MEASUREMENTS IN SOLID-SOLID INTERACTIONS - THE REACTIONS OF DICARBOXYLIC-ACIDS WITH ALPHA-AMINO-ACIDS .2. ISOPHTHALIC ACID PLUS DL-ALPHA-ALANINE

Reaction in the solid state between isophthalic acid and DL-alpha-alan ine was attempted by heating the reactants directly in a DSC and TG ap paratus. By reacting equivalent amounts of starting materials, the res ults that isophthalic acid interacts with DL-alpha-alanine in a 2:1 mo lar ratio mixture, yielding an immino derivative which, during formati on, melts and evaporates. The DSC, TG, IR and NMR data confirm the pro posed mechanism.