Research Article
An Efficient Protocol for the Synthesis of Quinoxaline Derivatives at Room Temperature Using Recyclable Alumina-Supported Heteropolyoxometalates
Table 2
Effect of catalyst silica on quinoxaline yields (%).
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Reaction conditions: o-phenylenediamine, 1 mmol; benzyl, 1 mmol; toluene, 10 mL; 100 mg of supported catalyst; 120 min; 25°C. aIsolated yield. |