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Efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones using heterogeneous solid acid catalysts: unexpected formation of 2,3-dihydro-2-(4-(tetrahydro-2H-pyran-2-yloxy)butyl)-quinazolin-4(1H)-one
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bharate, Sandip B. Mupparapu, Nagaraju Manda, Sudhakar Bharate, Jaideep B. Mudududdla, Ramesh Yadav, Rammohan R. Vishwakarma, Ram A. |
| Copyright Year | 2012 |
| Abstract | The heterogeneous solid acid catalysts Amberlyst-15 and silica-HClO 4 displays efficient catalytic properties for the synthesis of 2,3-dihydroquinazolin-4( 1H )-ones from anthranilamide and various aldehydes/ ketones under mild reaction conditions and in good yields. These catalysts also showed good catalytic activity for condensation of anthranilamide with a cyclic enol ether 3,4-dihydropyran and led to formation of new unexpected quinazolinone product 6 comprising two dihydropyran moieties. The new product 6 has been reported for the first time and is fully characterized using 2D-NMR data. Furthermore, both solid acid catalysts can be easily recycled without significant loss of activity. |
| File Format | PDF HTM / HTML |
| DOI | 10.3998/ark.5550190.0013.826 |
| Volume Number | 2012 |
| Alternate Webpage(s) | https://quod.lib.umich.edu/cache//5/5/5/5550190.0013.826/5550190.0013.826.pdf |
| Alternate Webpage(s) | http://www.arkat-usa.org/get-file/45272/ |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
