Synthesis of some phenylazonaphthols in an ionic liquid

Several phenylazonaphthols were prepared in 1-butyl-3-methylimidazolium tetrafluoroborate (an ionic liquid) using a coupling reaction of (4-X-benzene)diazonium tetrafluoroborates (X = H and NO 2) with 1- and 2-naphthols and their sodium salts. 1H NMR spectra of the reaction products were measured an...

Full description

Saved in:
Bibliographic Details
Published inDyes and pigments Vol. 72; no. 2; pp. 208 - 211
Main Authors Lyčka, A., Koloničný, A., Šimůnek, P., Macháček, V.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2007
Subjects
Azo coupling
Ionic liquid
Azo coupling
Ionic liquid
Online AccessGet full text

Cover

More Information
Summary:Several phenylazonaphthols were prepared in 1-butyl-3-methylimidazolium tetrafluoroborate (an ionic liquid) using a coupling reaction of (4-X-benzene)diazonium tetrafluoroborates (X = H and NO 2) with 1- and 2-naphthols and their sodium salts. 1H NMR spectra of the reaction products were measured and results compared with previously published data. The reaction of benzenediazonium tetrafluoroborates with sodium salts of 1- and 2-naphthols in 1-butyl-3-methyl-imidazolium tetrafluoroborate was faster compared with that when 1- and 2-naphthols were used. 4-Nitrobenzenediazonium tetrafluoroborate was much more reactive than benzenediazonium tetrafluoroborate.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2005.08.013