Internal rotation in the methyl esters of dimethylcarbamic acid and thio derivatives

Abstract

The kinetic parameters for hindered rotation about the C—N bond have been determined by total nuclear magnetic resonance line shape analysis for the methyl esters of N,N-dimethyldithiocarbamic acid, and N,N-dimethylmonothiocarbamic acid. A qualitative picture of the effect of substituents on the potential barrier in carbamate and thiocarbamate esters is presented.