Regiospecific strategies for the synthesis of novel dihydropyrimidinones and pyrimidopyridazines catalyzed by molybdate sulfuric acid
The one-pot reactions of aryl glyoxals with acetylacetone and urea using molybdate sulfuric acid (5mol%) lead to the novel functionalized 5-acetyl-4-(aryloyl)-3,4-dihydropyrimidinones, which readily undergo the Knorr condensation with hydrazines to produce new pyrimido[4,5-d]pyridazines. The present...
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| Veröffentlicht in: | Tetrahedron letters 2014-06, Vol.55 (26), p.3581-3584 |
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| creator | Karami, Bahador Khodabakhshi, Saeed Akrami, Sedigheh Farahi, Mahnaz |
| description | The one-pot reactions of aryl glyoxals with acetylacetone and urea using molybdate sulfuric acid (5mol%) lead to the novel functionalized 5-acetyl-4-(aryloyl)-3,4-dihydropyrimidinones, which readily undergo the Knorr condensation with hydrazines to produce new pyrimido[4,5-d]pyridazines. The present strategies are in accordance with green chemistry principles through the use of a safe and recyclable catalyst under solvent-free conditions. |
| doi_str_mv | 10.1016/j.tetlet.2014.02.025 |
| format | Article |
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| ispartof | Tetrahedron letters, 2014-06, Vol.55 (26), p.3581-3584 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Acetylacetone Aryl glyoxal Condensing Hydrazine Hydrazines Molybdates Pyrimido[4,5-d]pyridazines Strategy Sulfuric acid Tetrahedrons Ureas |
| title | Regiospecific strategies for the synthesis of novel dihydropyrimidinones and pyrimidopyridazines catalyzed by molybdate sulfuric acid |
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