%0 Journal Article %T Synthesis of 2-amino-4H-pyran derivatives in aqueous media with nano-SnO2 as recyclable catalyst %J Asian Journal of Nanoscience and Materials %I Sami Publishing Company %Z 2645-775X %A Baghernejad, Bita %A Fiuzat, Mahsa %D 2021 %\ 04/01/2021 %V 4 %N 2 %P 171-177 %! Synthesis of 2-amino-4H-pyran derivatives in aqueous media with nano-SnO2 as recyclable catalyst %K 2 %K Amino %K 4H %K pyran Multi %K component reaction One %K pot Nano %K SnO2 %R 10.26655/AJNANOMAT.2021.2.7 %X A nano-SnO2 catalyzed environmentally benign strategy for the synthesis of 2-amino-4H-pyran derivatives via the multi-component reaction between aryl aldehydes, β-dicarbonyl compounds and malononitrile in aqueous media under reflux conditions in excellent yields is established. The structures of the synthesized compounds were confirmed using IR, 1H-NMR. The elemental analysis and morphology of the catalyst was characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). This one-pot three component protocol provides an efficient improved pathway for the synthesis of pyrans in the terms of short reaction times, simple working up procedure and recyclability of catalyst. %U https://www.ajnanomat.com/article_129071_fa76476f3b9ddb36ead409f3badd0d9f.pdf