Abstract
This study deals with the synthesis of phenylazo-N,N-diphenylpropanediamide which is a kind of excellent pigment. During the preparation, intermediate product, N,N-diphenylpropanediamide is first synthesized through the substitution reaction of malonic acid diethyl ester and substituted aniline. Then, final product, phenylazo-N,N-diphenylpropanediamide can be obtained by coupling reaction of N,N-diphenylpropanediamide and phenyl substituted diazonium salt. The final product has been analyzed by UV, MS and HNMR, respectively, to determine the composition and structure. In addition, the effects of solvents, coupling catalyst and pH on yield rate have also been investigated.
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