Khaligh, Nader Ghaffari and Johan, Mohd Rafie and Juan, Joon Ching (2019) Saccharin: a cheap and mild acidic agent for the synthesis of azo dyes via telescoped dediazotization. Green Processing and Synthesis, 8 (1). pp. 24-29. ISSN 2191-9542, DOI https://doi.org/10.1515/gps-2017-0133.
Full text not available from this repository.Abstract
Green synthesis methods are considered as a safer alternative to the conventional synthetic processes due to their eco-friendly nature, cost-effectiveness, and easy handling. In the present study, an eco-friendly and sustainable method for the synthesis of stable arenediazonium has been developed using saccharin as a cheap and mild acidic agent and tert-butyl nitrite as a diazotization reagent for the first time. These stable intermediates were used in the azo coupling reaction with 4-hydroxybenzaldehyde via telescoped dediazotization. The current method has advantages such as reduced waste by avoiding solvent for the purification of intermediate in diazotization step, cost-effectiveness, simple experimental procedure, good yield of azo dyes, metal-free waste, and environmentally benign conditions. An interesting aspect of this study is the recovery of saccharin from the reaction, which could be reused. © 2019 Walter de Gruyter GmbH, Berlin/Boston.
| Item Type: | Article |
|---|---|
| Funders: | High Impact Research Grant (no. RP025A/B/C-14AET) for Scientific Research from University of Malaya, Malaysia |
| Uncontrolled Keywords: | azo coupling; cost-effectiveness; saccharin; stable arenediazonium; sustainable protocol |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 23 Apr 2020 14:47 |
| Last Modified: | 23 Apr 2020 14:47 |
| URI: | http://eprints.um.edu.my/id/eprint/24232 |
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