Kinetics of hydrogen isotope exchange reactions. Part XXX. Steric course of γ-radiation-induced exchange between water and tartaric acids

Abstract

γ-Irradiation of solutions of (+)-tartaric acid and of meso-tartaric acid in tritiated water at pH 7 leads to an exchange of carbon-bonded hydrogen with the solvent. For each substrate the exchange proceeds to an approximately equal extent with inversion and with retention of configuration. The results support the conclusions of a similar stereochemical study on cis- and trans-cyclohexane-1,2-diols.