TY - JOUR ID - 246765 TI - Functionalized Nano-Zeolite-NaY with –SO3H and Ca: Fabrication and its Catalytic Performance in the Four-Component Synthesis of Benzimidazolopyrimido Pyrimidines JO - Nashrieh Shimi va Mohandesi Shimi Iran JA - NSMSI LA - en SN - 1022-7768 AU - Seyedzade, Zahra AU - Kalhor, Mehdi AU - Mirshokraie, Ahmad AU - Rezanejade, Ghasem AD - Department of Chemistry, Payame Noor University, Tehran, I.R. IRAN Y1 - 2023 PY - 2023 VL - 41 IS - 4 SP - 1 EP - 12 KW - nanocatalyst KW - zeolite-Y/sulfuric acid KW - calcium ion KW - four-component synthesis KW - 2-amino benzimidazole KW - pyrimido pyrimidine DO - N2 - In this study, solid zeolosulfuric acid (SO3H@zeolite-Y) was first obtained by the reaction of zeolite-NaY with chlorosulfonic acid. Ca2+ ions were then stabilized on the surface of zeolosulfuric acid by metal exchange method (Ca/SO3H@zeolite-Y). The structure and morphology of this new bi-functionalized nanoporous was investigated and identified usingFT-IR, FESEM, EDX and BET instrumental analyses. In the following, its catalytic activity in the synthesis of benzimidazo[2,1-a]pyrimido[5,4-d]pyrimidines through the four-component reaction of 2-amino benzimidazole, cyanoacetamide and two moles of different aromatic aldehydes under green conditions was considered. One of the obvious advantages of this nanocatalyst is the presence of Lewis (Ca2+) and Brunsted acid (-SO3H) sites on a nanoporous solid substrate, which can be very useful and important in multi-component syntheses. Simplicity of the procedure, the ability to recycle the catalyst and easy separation of the product, high yield and mild conditions are other advantages of this method. UR - https://www.nsmsi.ir/article_246765.html L1 - https://www.nsmsi.ir/article_246765_b3d26f0cc43124fa08ddb1a6ac12300e.pdf ER -