Novel compounds of the general formula I ##STR1## where X and Y independently of one another are each carboxyl, a carboxylic ester group, cyano or an unsubstituted or substituted carbamyl or carboxylic hydrazide group and X and Y together form a radical of the formula ##STR2## where R.sup.1 is hydrogen or a radical of a primary amine and R.sup.2 and R.sup.3 are each hydrogen or unsubstituted or substituted alkyl, cycloalkyl or aryl, are very useful as diazo components.
通式I的新化合物为 ##STR1## 其中X和Y是彼此独立的羧基、
羧酸酯基团、
氰基或未取代或取代的
氨基甲酰基或
羧酸肼基,X和Y共同形成式的基团 ##STR2## 其中R.sup.1是氢或一级胺的基团,R.sup.2和R.sup.3是氢或未取代或取代的烷基、环烷基或芳基,这些化合物作为重氮组分非常有用。