The kinetics of acid hydrolysis of phenylpenicillins substituted in the benzene ring were studied at pH 3.0 and temperatures of 20, 25, and 30degreesC. A Hammett correlation analysis of the reaction was performed.
Kinetic Approach to the Development in β-Lactam Antibiotics. I. Comparative Stability of Semisynthetic Penicillins and 6-Aminopenicillanic Acid in Aqueous Solution