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Short Paper | Regular issue | Vol 87, No. 6, 2013, pp.1327-1336
Published online, 13th May, 2013
DOI: 10.3987/COM-13-12719
Microwave-Assisted Synthesis of 3-Methyl-1-phenylchromeno[4,3-c]pyrazol-4(1H)-ones under Solvent-Free Conditions

Guo-Yu Yang, Jing-Tian Yang, Cai-Xia Wang, Su-Fang Fan, Pu-Hui Xie, and Cui-Lian Xu*

*College of Science, Henan Agricultural University, Zhengzhou 450002, China


A novel microwave-assisted method for the synthesis of 3-methyl-1-phenylchromeno[4,3-c]pyrazol-4(1H)-ones by the cyclization of 3-[1-(phenylhydrazono)ethyl]chromen-2-ones with CuO/SBA-15 under solvent-free conditions is described. The reaction gave the corresponding chromenopyrazole products in good to excellent yields in short reaction times.