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KF-Al2O3 as an Efficient and Recyclable Basic Catalyst for the Synthesis of 4H-Pyran-3-carboxylates and 5-Acetyl-4H-pyrans

Author(s): Iadeishisha Kharbangar | Md. Rumum Rohman | Hormi Mecadon | Bekington Myrboh

Journal: International Journal of Organic Chemistry
ISSN 2161-4687

Volume: 02;
Issue: 03;
Start page: 282;
Date: 2012;
Original page

Keywords: 4H-Pyran derivatives | Ethanol | KF-Al2O3 | Room Temperature | Three-Component

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.
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