Synthesis of dyes derived from 1-aryl-5-amino-4-cyanopyrazoles

Eight dyes were prepared by diazotisation of substituted amino-cyano pyrazoles and coupling to anilines or 2-naphthol. The dyes were fully characterised by spectroscopic techniques. The cyano group of the pyrazoles was found to be susceptible to hydrolysis during preparation.

Bibliographic Details
Main Author: Gupta, Sanjay (author)
Other Authors: Sivasubramanian, Aravind (author), Rodrigues, Lígia M. (author), Esteves, Ana Paula (author), Hrdina, Radim (author), Campos, Ana M. F. Oliveira (author)
Format: article
Language:eng
Published: 2007
Subjects:
Cyanopyrazole
Azo dyes
Diazotisation
Science & Technology
Online Access:http://hdl.handle.net/1822/5259
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/5259
Description
Summary:Eight dyes were prepared by diazotisation of substituted amino-cyano pyrazoles and coupling to anilines or 2-naphthol. The dyes were fully characterised by spectroscopic techniques. The cyano group of the pyrazoles was found to be susceptible to hydrolysis during preparation.

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