1. Jiang, Y., Xu, K., and Zeng, C. Use of electrochemistry in the synthesis of heterocyclic structures", Chem. Rev., 118(9), pp. 4485{4540 (2018). 2. Montazeri, N. Antibacterial activity and e_cient synthesis of 3,4-dihydropyrano[c]chromene derivatives by using ammonium triuoroacetate (CF3COONH4) catalyst", Iran J. Med. Microbiol., 11(2), pp. 61{68 (2017). 3. Isaac, G., Marqu_es-L_opez, E., and Raquel, P. Herrera enantioselective organocatalyzed synthesis of 2-amino- 3-cyano-4H-chromene derivatives", Symmetry, 7, pp. 1519{1535 (2015). 4. Bahmachari, G. and Banerjee, B. Facile and one-pot access to diverse and densely functionalized 2-amino- 3-cyano-4H-pyrans and pyran-annulated heterocyclic sca_olds via an eco-friendly multicomponent reaction at room temperature using urea as a novel organocatalyst", ACS Sustainable Chem. Eng., 2, pp. 411{ 422 (2013). 1224 R. Mohammadipour et al./Scientia Iranica, Transactions C: Chemistry and ... 27 (2020) 1216{1225 5. Hekmatshoar, R., Majedi, S., and Bakhtiari, K. Sodium selenate catalyzed simple and e_cient synthesis of tetrahydro benzo [b] pyran derivatives", Catal. Commun., 9(2), pp. 307{310 (2008). 6. Maleki, B. and Sheikh, S. One-pot synthesis of 2-amino-2-chromene and 2-amino-3-cyano-4H-pyran derivatives promoted by potassium uoride", Org. Prep. Proced. Int., 47(5), pp. 368{378 (2015). 7. Muthu, T., Anand, K., and Sureshkumar, M. Ecofriendly approach: Graphene like boron nitride modi- _ed calcium material for the synthesis of 2-amino-4Hpyran- 3-carbonitrile derivatives", Adv. Mater. Lett., 7(10), pp. 790{794 (2016). 8. Baghbanian, S.M., Rezaei, N., and Tashakkorian, H. Nanozeolite clinoptilolite as a highly e_cient heterogeneous catalyst for the synthesis of various 2-amino- 4 H-chromene derivatives in aqueous media", Green Chem., 15(12), pp. 3446{3458 (2013). 9. Esmaeilpour, M., Javidi, J., Dehghani, F., and Nowroozi Dodeji, F. A green one-pot threecomponent synthesis of tetrahydrobenzo[b]pyran and 3,4-dihydropyrano[c]chromene derivatives using a Fe3O4@SiO2-imid-PMAn magnetic nanocatalyst under ultrasonic irradiation or reux conditions", RSC Adv., 5(34), pp. 26625{26633 (2015). 10. Safaei-Ghomi, J., Javidan, A., Ziarati, A., and Shahbazi-Alavi, H. Synthesis of new 2-amino-4Hpyran- 3,5-dicarboxylate derivatives using nanocrystalline MIIZr4(PO4)6 ceramics as reusable and robust catalysts under microwave irradiation", J. Nanopart. Res., 17(8), pp. 338{343 (2015). 11. Kiani, M., Mohammadipour, M., and Zamanian, A. Design, preparation and characterization of MoO3Hfunctionalized Fe3O4@SiO2 magnetic nanocatalyst and application for the one-pot multicomponent reactions", Acta Chim. Slov., 64(3), pp. 707{713 (2017). 12. Albadi, J., Razeghi, A., Mansournezhad, A., and Azarian, Z. CuO-CeO2 nanocomposite catalyzed e_cient synthesis of aminochromenes", J. Nanostruct. Chem., 3(1), pp. 85{89 (2013). 13. Gupta, R., Ladage, S., and Ravishankar, L. Mg-Al hydrotalcite catalyzed e_cient one-pot synthesis of 4- benzo[b]pyrans, 2-aryl benzimidazole and 2-aryl-4, 5- dihydro-1H-imidazole derivatives", Chem. J., 1, pp. 5{9 (2015). 14. Tabassum, S., Govindaraju, S., and Pasha, M.A. Ultrasound mediated, iodine catalyzed green synthesis of novel 2-amino-3-cyano-4H-pyran derivatives", Ultrason Sonochem., 24, pp. 1{7 (2015). 15. Robabeh, B. and Shariati, S.A.N. Green synthesis of 2-amino-3-cyano-4H-chromenes in water using nano silica-bonded 5-N-propyl-octahydro-pyrtmido [1,2{4] azepinium chloride as an e_ective and reusable nano catalyst", J. Chil. Chem. Soc., 60(2), pp. 2900{2904 (2015). 16. Niknam, K., Khataminejad, M., and Zeyaei, F. Diethylene glycol-bis(3-methylimidazolium) dihydroxide as a dicationic ionic liquid catalyst for the synthesis of 4H-pyrane derivatives in aqueous medium", Tetrahedron Lett., 57, pp. 361{365 (2016). 17. Rostamnia, S., Nuri, A., Xin, H., Pourjavadi, A., and Hosseini, S.H. Water dispersed magnetic nanoparticles (H2O-DMNPs) of -Fe2O3 for multicomponent coupling reactions: a green, single-pot technique for the synthesis of tetrahydro-4H-chromenes and hexahydroquinoline carboxylates", Tetrahedron Lett., 54(26), pp. 3344{3347 (2013). 18. Mirjalili, B.F. and Dehghani Tafti, M. Synthesis of quinoxalines promoted by eco-friendly nanokaoline/ BF3/Fe3O4 nano-catalyst under grinding condition", Scientia Iranica, C, 24, pp. 3014{3020 (2017). 19. Guo, R.Y., An, Z.M., Mo, L.P., Wang, R.Z., Liu, H.X., Wang, S.X., and Zhang, Z.H. Meglumine: A novel and e_cient catalyst for one-pot, three-component combinatorial synthesis of functionalized 2-amino-4Hpyrans", ACS Comb. Sci., 15(11), pp. 557{563 (2013). 20. Dekamin, M.G., Peyman, S.Z., Karimi, Z., Javanshir, S., Naimi-Jamal, M.R., and Barikani, M. Sodium alginate: An e_cient biopolymeric catalyst for green synthesis of 2-amino-4H-pyran derivatives", Inter. J. Bio. Macromol., 87, pp. 172{179 (2016). 21. Kaur, M., Kaur, A., Mankotia, S., Singh, H., Singh, A., Singh, J.V., Gupta, M.K., Sharma, S., Nepali, K., and Singh Bedi, P.M. Synthesis, screening and docking of fused pyrano[3,2-d]pyrimidine derivatives as xanthine oxidase inhibitor", Eur. J. Med. Chem., 131, pp. 14{ 28 (2017). 22. Goli-Jolodar, O., Shirini, F., and Seddighi, M. An e_- cient and practical synthesis of specially 2-amino-4Hpyrans catalyzed by C4(DABCO-SO3H)2.4Cl", Dyes and Pigments, 133, pp. 292{303 (2016). 23. Bhaskar, K.V., Joshi, S.D., and Ahuja, P. A facile and one-pot synthesis of pyrone derivatives via ionic liquid catalysed knoevenagel reaction and their biological evaluation", Indian J. Heterocycl. Chem., 25(3{4), pp. 225{230 (2016). 24. Zol_gol, M.A., Yarie, M., Baghery, S., Khoshnood, A., and Alonso, D.A. 1H-imidazol-3-ium tricyanomethanide f[HIM]C(CN)3g as a nanostructured molten salt catalyst: application to the synthesis of pyrano[4,3-]pyrans", Res. Chem. Intermed., 43(5), pp. 3291{3305 (2017). 25. Mohammadi, R., Esmati, S., Gholamhosseini-Nazari, M., and Teimuri-Mofrad, R. Synthesis and characterization of a novel Fe3O4@SiO2-BenzIm-Fc[Cl]/BiOCl nano-composite and its e_cient catalytic activity in the ultrasound-assisted synthesis of diverse chromene analogs", New J. Chem., 43(1), pp. 135{145 (2019).
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