Photolysis of N-2,4-dinitrophenylamino-acids; structural requirements for the formation of 6-nitrobenzimidazole 1-oxides
Abstract
6-Nitrobenzimidazole 1-oxides are formed from N-2,4-dinitrophenylamino-acids in optimum yields at very low pH and also at ca. pH 3. The reaction at pH 3 requires a hydrogen atom on the amino-group, whereas at low pH it does not. The mechanism of the reaction is discussed.