| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 51714 | Catalysis Communications | 2011 | 6 Pages |
Mononitration of aromatics was performed in a two-phase system using phase-transfer catalyst. The most advantageous conditions for the nitration were determined (temperature, reaction time, the type and amount of phase transfer catalyst, nitrification strength of the nitro-sulfuric acid). From the results, a significant improvement in the selectivity and conversion of the nitration of xylene was observed: the ratio of 4-nitro-m-xylene to 2-nitro-m-xylene was unprecedented increased up to 91.3%:7.7%, the ratio of 4-nitro-o-xylene to 3-nitro-o-xylene was also increased to 71.1%:27.2%; both the conversions were over 96%.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Unreported high regioselectivity of disubstituted aromatics was obtained with PTC. ► Mixed acid was significantly reduced and valuable for industry application. ► Quantitative calculation of C atoms' net charge on substituted benzenes was carried.
