Paper chromatography of some isomeric monosubstituted peroxybenzoic acids

The Rb values of a number of isometric monosubstituted peroxybenzoic acids have been determined for two different solvent systems. The solvent systems are hexane saturated with dioxane and dimethyl formamide for use on acetylated paper and benzene for use on paper impregnated with N-methylformamide. The Rb values of isomeric peracids vary considerably, depending on the substituent group and its orientation. An attempt is made to correlate the chromatographic data with the structure of the compounds. The influence of the strong inductive and steric effects of the substituents is cleary seen.