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KF-Al<sub>2</sub>O<sub>3</sub>as an Efficient and Recyclable Basic Catalyst for the Synthesis of 4<i>H</i>-Pyran-3-carboxylates and 5-Acetyl-4<i>H</i>-pyrans 预览

KF-Al<sub>2</sub>O<sub>3</sub>as an Efficient and Recyclable Basic Catalyst for the Synthesis of 4<i>H</i>-Pyran-3-carboxylates and 5-Acetyl-4<i>H</i>-pyrans
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摘要 KF-Al2O3 as a recyclable basic catalyst for the three-component synthesis of 4H-pyran derivatives by the reaction of aldehydes, malononitrile and active methylene dicarbonyl compounds in ethanol at room temperature is described. The protocol is environmentally benign and offers rapid access to a wide array of 4H-pyran heterocycles in good to excellent yields. KF-Al2O3 as a recyclable basic catalyst for the three-component synthesis of 4H-pyran derivatives by the reaction of aldehydes, malononitrile and active methylene dicarbonyl compounds in ethanol at room temperature is described. The protocol is environmentally benign and offers rapid access to a wide array of 4H-pyran heterocycles in good to excellent yields.
作者 Iadeishisha Kharbangar Md. Rumum Rohman Hormi Mecadon Bekington Myrboh Iadeishisha Kharbangar;Md. Rumum Rohman;Hormi Mecadon;Bekington Myrboh(Department of Chemistry, North-Eastern Hill University (NEHU), Shillong, India)
出处 《有机化学国际期刊(英文)》 2012年第3期282-286,共5页 International Journal of Organic Chemistry
关键词 4H-Pyran derivatives Ethanol KF-AL2O3 Room Temperature Three-Component 4H-Pyran derivatives Ethanol KF-Al2O3 Room Temperature Three-Component
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