ABSTRACT One mol of N,N-dimethyl-p-toluidine(DMT) reacts with two moles of periodate during the initial part of reaction. The main reaction product is 4-methyl-1, 2-benzoquinone. The kinetics of the Mn II catalyzed periodate oxidation of DMT in acetone-water medium has been followed by monitoring the increase in the absorbance of reaction intermediate. Where kK 3 K 4 is the empirical composite rate constant, K w is ionic product of water, K 2 is acid dissociation constant of H 4 IO 6 -and K b is base dissociation constant of DMT. In agreement with the rate law the 1/k cat versus [H + ] plot passes through the minimum. Detailed molecular mechanism is given
