Silica-supported 1,3-dichloro-5,5-dimethylhydantoin(DCH) as a useful reagent for microwave-assisted aromatization of 1,3,5-trisubstituted pyrazolines under solvent-free conditions |
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| Authors: | Davood Azarifara Elahe Nadimib Mohammd Mehdi Ghanbari a |
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| Institution: | a Department of Chemistry, School of Science, Bu Ali Sina University, 65174 Hamadan, Iran;b Department of Chemistry, Kavar Branch, School of Applied Scientific and Technology, Kavar, Iran;c Department of Chemistry, Sarvestan Branch, Islamic Azad University, Sarvestan, Iran |
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| Abstract: | 1,3,5-Trisubstituted pyrazolines are rapidly and conveniently oxidized to their corresponding pyrazoles by 1,3-dichloro-5,5- dimethylhydantoin(DCH) in solution and solvent-free conditions under microwave irradiation.The presence of silica gel as a supporting agent is shown to be effective in reducing the reaction times and increasing the yields. |
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| Keywords: | Pyrazolines 1 3-Dichloro-5 5-dimethylhydantoin(DCH) Aromatization Solid-surface Microwave irradiation |
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