Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
178103 | Dyes and Pigments | 2009 | 6 Pages |
Abstract
3- and 4-[(Azulen-1-yl)-azo]-azo-benzenes were obtained in good yields using the buffered coupling reaction between several alkyl-substituted azulenes and diazotized phenylazo-phenylamines in dichloroacetic acid. The coupling products were characterized and the recorded electronic spectra are discussed. The isosbestic points obtained by protonation enabled the determination of their pKa values.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Alexandru C. Razus, Liviu Birzan, Mihaela Cristea, Victorita Tecuceanu, Liliana Blanariu, Cristian Enache,