TY - JOUR ID - 129071 TI - Synthesis of 2-amino-4H-pyran derivatives in aqueous media with nano-SnO2 as recyclable catalyst JO - Asian Journal of Nanoscience and Materials JA - AJNM LA - en SN - 2645-775X AU - Baghernejad, Bita AU - Fiuzat, Mahsa AD - Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran Y1 - 2021 PY - 2021 VL - 4 IS - 2 SP - 171 EP - 177 KW - 2 KW - Amino KW - 4H KW - pyran Multi KW - component reaction One KW - pot Nano KW - SnO2 DO - 10.26655/AJNANOMAT.2021.2.7 N2 - 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. UR - https://www.ajnanomat.com/article_129071.html L1 - https://www.ajnanomat.com/article_129071_fa76476f3b9ddb36ead409f3badd0d9f.pdf ER -