N. S. Babu, N. Pasha, K. T. Venkateswara Rao, P. S. S. Prasad and N. Lingaiah, “A Het-erogeneous Strong Basic Mg/La Mixed Oxide Catalyst for Efficient Synthesis of Polyfunctionalized Pyrans,” Tetrahedron Letters, Vol. 49, No. 17, 2008, pp. 2730-2733. Hdoi:10.1016/j.tetlet.2008.02.154

has been cited by the following article:

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

  AUTHORS: Iadeishisha Kharbangar, Md. Rumum Rohman, Hormi Mecadon, Bekington Myrboh

  KEYWORDS: 4H-Pyran derivatives; Ethanol; KF-Al2O3; Room Temperature; Three-Component

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.3, September 28, 2012

  ABSTRACT: 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.