%0 Journal Article %T An efficient synthesis of pyrimido[4,5-b]quinoline and indenopyrido[2,3-d]pyrimidine derivatives in the presence of Fe3O4@nano-cellulose/Sb (V) as a bio-based magnetic nano-catalyst %J Scientia Iranica %I Sharif University of Technology %Z 1026-3098 %A Hoseinikhah, S. S. %A Mirjalili, B. F. %A Salehi, N. %A Bamoniri, A. %D 2022 %\ 06/01/2022 %V 29 %N 3 %P 1301-1307 %! An efficient synthesis of pyrimido[4,5-b]quinoline and indenopyrido[2,3-d]pyrimidine derivatives in the presence of Fe3O4@nano-cellulose/Sb (V) as a bio-based magnetic nano-catalyst %K Fe3O4@nano-cellulose/Sb(V) %K Bio-based catalyst %K Pyrimido[4,5-b]quinoline, Indenopyrido[2,3-d]pyrimidine %K Solvent-free %K Multi component reaction %R 10.24200/sci.2021.56414.4712 %X In this study, an eco-friendly approach has been introduced for the synthesis of pyrimido[4,5-b]quinolones and indenopyrido[2,3-d]pyrimidines. This synthesis was done via a three component coupling of 6-amino-2-(methylthio)pyrimidin-4(3H)-one, 1,3-indanedione/dimedone and aromatic aldehydes using Fe3O4@nano-cellulose/Sb(V) as catalyst under solvent-free condition at 70 °C by electrical mortar-heater. The catalyst was separated from the reaction mixture by an external magnet and reused for subsequent reactions. The present procedure offers many advantages such as high yield, easy work-up, simple isolation of catalyst by external magnet and high reusability of the it. The structure of the obtained pyrimido[4,5-b]quinolones and indenopyrido[2,3-d]pyrimidines products were studied by FT-IR, 1H-NMR and 13C-NMR spectroscopic data. %U https://scientiairanica.sharif.edu/article_22481_62a911f9a3cab8e15a3ec191bd989d19.pdf