✦ LIBER ✦
Preparation of Diazo Phenyl Sulfides. Kinetics and Mechanism of the Diazo Coupling Reaction of p-Nitrobenzenediazo Phenyl Sulfide with β-Naphthol under Various Conditions
✍ Scribed by Alfy Badie Sakla; Nabil Khalil Masoud; Zaki Sawiris; Wagih Sadik Ebaid
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- German
- Weight
- 421 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Aryldiazophenyl sulfides prepared from diazotised arylamines and thiophenol at controlled pH, are coupled with β‐naphthol yielding the corresponding azo dye.
A kinetic study of the diazo coupling reaction of p‐nitrobenzenediazo phenyl sulfide with β‐naphthol under various conditions revealed that the reaction is of first order kinetics with respect to the diazo phenyl sulfide, and that the rate of coupling measured colorimetrically is influenced by the hydrogen ion concentration and by the ionising power of the medium.