2-Hydroxy-3-naphthalene carboxamides and their use as coupling agents in diazotype materials

摘要

This invention relates to 2-hydroxy-3-naphthoic acid amides of the general formula: IMAGE wherein R1 is hydrogen, a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl group, and R2 and R3 are identical or different and are hydrogen, a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl group, or, together with the nitrogen atom to which they are attached, a substituted or unsubstituted heterocyclic group.