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ZnO NANOPARTICLES AS A HIGHLY EFFICIENT HETEROGENEOUS CATALYST FOR THE SYNTHESIS OF VARIOUS CHROMENE AND PYRANO[4,3-b]PYRAN DERIVATIVES UNDER SOLVENT-FREE CONDITIONS

Zinatossadat Hossaini, Fatemeh Sheikholeslami-Farahani, Samira Soltani, S. Zahra Sayyed-Alangi, Hadi Sajjadi-Ghotabadi
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Abstract


Three-component reaction of 4-hydroxy-2H-pyran-2-one, aldehydes, and malononitrile or ethyl cyanoacetate in the presence of ZnO nanoparticles as the catalyst is described as an efficient and green synthetic method for obtaining of pyrano[4,3-b]pyran derivatives in excellent yield. These reactions were also tested with 2'-hydroxyacetophenone under similar conditions and produced chromene derivatives.

How to Cite
Hossaini, Z.; Sheikholeslami-Farahani, F.; Soltani, S.; Sayyed-Alangi, S. Z.; Sajjadi-Ghotabadi, H. Chem. Heterocycl. Compd. 2015, 51, 26. [Khim. Geterotsikl. Soedin. 2015, 51, 26.]

For this article in the English edition see DOI 10.1007/s10593-015-1654-0


Keywords


aldehyde; chromene; ethyl cyanoacetate; malononitrile; pyrano[4,3-b]pyran; solvent-free reactions; three-component reactions

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