Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
147509 | Chemical Engineering Journal | 2014 | 6 Pages |
•Introducing efficient catalysts for the synthesis of 2-amino benzo[h]chromenes.•Study of TGA, XRD and calculation of size and inter planer distance of the catalysts.•Generality of the catalysts, high yields and short reaction times.
An efficient solvent-free approach for the synthesis of 2-amino benzo[h]chromene derivatives from the condensation of malononitrile, 2-naphthol and various aldehydes using acetic acid functionalized imidazolium salt (1-carboxymethyl-3-methylimidazolium bromide {[cmmim]Br} as a reusable catalysts is reported. In addition, thermal gravimetric analysis (TGA), differential thermal gravimetry (DTG), powder X-ray diffraction (PXRD) and calculation of size and inter planer distance of the catalyst have been studied in this work.
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