Nanomagnetite-supported molybdenum oxide (nanocat-Fe-Mo): an efficient green catalyst for multicomponent synthesis of amidoalkyl naphthols Swapnil R. Bankar 1 • Sharad N. Shelke 1 Received: 29 November 2017 / Accepted: 2 February 2018 Ó Springer Science+Business Media B.V., part of Springer Nature 2018 Abstract Magnetite (Fe 3 O 4 )-supported molybdenum oxide (MoO 3 ) was synthesized from simple starting precursors in aqueous medium. The synthesized nanocat-Fe-Mo was analyzed using several techniques such as X-ray diffraction (XRD) analysis, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and vibrating-sample magnetometry (VSM). The catalytic activity of the synthesized nanocat-Fe-Mo was studied in a benign one-pot multicom- ponent transformation for synthesis of amidoalkyl naphthol derivatives under solvent- free condition using both conventional and microwave irradiation methods. Nanocat-Fe- Mo was found to be highly active and could be reused seven times without notable loss in catalytic activity. The proposed method offers advantages such as good reaction yield (80–95%), short process time, simple workup, and recycling of the catalyst, representing important green chemistry principles. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11164- 018-3321-4) contains supplementary material, which is available to authorized users. & Sharad N. Shelke snshelke@yahoo.co.in 1 P. G. and Research Centre, Department of Chemistry, S.S.G.M. College, Kopargaon, Ahmednagar, MS 423601, India 123 Res Chem Intermed https://doi.org/10.1007/s11164-018-3321-4