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Synthesis of dyes derived from 1-aryl-5-amino-4-cyanopyrazoles
Authors: Gupta Sanjay | Sivasubramanian Aravind | Rodrigues Lígia | Esteves Ana | Hrdina Radim | Oliveira-Campos Ana
Year: 2007
Type of publication: článek v odborném periodiku
Name of source: Dyes and Pigments
Publisher name: Elsevier Science
Place: Oxford
Page from-to: 82-87
Titles:
Language Name Abstract Keywords
cze Synthesa barviv odvozených od 1-aryl-5-amino-4-kyanopyrazolů Diazotací substituovaných aminokyanopyrazolů a kopulací s anilinem nebo 2-naftolem bylo připraveno osm barviv. Barviva byla charakterisována spektroskopickými technikami. Bylo zjištěno, že kyanoskupina je náchylná k hydrolýze během přípravy.
eng Synthesis of dyes derived from 1-aryl-5-amino-4-cyanopyrazoles Eight dyes were prepared by diazotisation of substituted aminocyanopyrazoles and coupling to anilines or 2-naphtol. The dyes were fully characterized by spectroscopic techniques. The cyano group of the pyrazoles was found to be susceptible to hydrolysis during preparation. Cyanopyrazole; Azo dyes; Diazotisation