| Autor: |
Hamid Reza Shaterian, Kobra Azizi, Nafiseh Fahimi |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Arabian Journal of Chemistry, Vol 10, Iss S1, Pp S42-S55 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1878-5352 |
| DOI: |
10.1016/j.arabjc.2012.07.006 |
| Popis: |
Phosphoric acid supported on alumina (H3PO4/Al2O3) is found to be an efficient catalyst for the three-component condensation reaction of β-naphthol, aromatic aldehydes and amides or carbamates to afford the corresponding α-amidoalkyl-β-naphthols, α-carbamato-alkyl-β-naphthols under solvent-free conditions. In addition, the preparation of 2-arylbenzothiazoles from the reaction of aromatic aldehydes and 2-aminothiophenol was described under mild and solvent-free conditions. The remarkable features of these catalytic procedures are high conversions, shorter reaction times, cleaner reaction, simple experimental, and work-up procedures. Phosphoric acid supported on alumina as catalyst can be reused several times without significant loss of its catalytic activity. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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