Synthesis of some novel pyrazolo[1,5-a]pyrimidine derivatives and their application as disperse dyes

Article abstract of DOI:10.3390/molecules16065182

A series of novel monoazo-disperse dyes containing pyrazolo[1,5-a] pyrimidine structures were synthesized starting with the coupling reaction between ethyl cyanoacetate and 4-hydroxybenzenediazonium chloride, followed by treatment of the resulting hydrazo