An efficient protocol for the green synthesis of quinoxaline and dipyridophenazine derivatives at room temperature using sulfated titania

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• 作者：B. Krishnakumar ; R. Velmurugan ; S. Jothivel ; M. Swaminathan
• 关键词：Sulfated titania ; Photocatalyst ; Quinoxalines ; Dipyridophenazines ; Green synthesis
• 刊名：Catalysis Communications
• 出版年：2010
• 出版时间：1 July 2010
• 年：2010
• 卷：11
• 期：12
• 页码：997-1002
• 全文大小：550 K

文摘

Biologically active quinoxalines and dipyridophenazines were efficiently synthesized in excellent yield and less reaction time using inexpensive, easily recyclable sulfated titania (TiO₂–SO₄²⁻). TiO₂–SO₄²⁻, prepared by sol–gel method, was characterized by XRD, FT-IR and SEM techniques to confirm the sulfate loading. TiO₂–SO₄²⁻ has more acidic sites when compared to TiO₂ (prepared )and TiO₂–P25. Synthesis of quinoxalines with this catalyst can also be carried out in water.