Preparation of the azo dyes; diazobenzene-acetoacet-alpha-naphthylamide; diazo-alpha-naphthylamine-acetoacetanilide and the isomeric meta- and para-nitro derivatives of diazobenzene-acetoacetanilide

Abstract

I. Dyes were prepared by coupling para- and meta- nitroaniline and alpha-naphthylamine with aceto-acetanilide. II. Intermediates were prepared by condensing para- and meta-nitroaniline and alpha-naphthylamine with aceto-acetanilide. III. Dyes were prepared by diazotizing aniline and coupling with the para- and meta-nitro-aceto-acetanilide. To the present writing, our attempts to couple diazotized aniline with aceto-acet-alpha-naphthylamide have failed because of the extreme insoluble character of the intermediate.