RT Journal Article T1 Immobilized Ni on TMEDA@βiO2@aSiO2@Fe3O4: as a novel magnetic nanocatalyst for preparation of pyrido[2,3-d:6,5-d']dipyrimidines A1 Almajidi, Yasir Qasim A1 Ubaidullah, Mohd A1 Pandit, Bidhan A1 Kareem, A. K. A1 Romero Parra, Rosario Mireya A1 Bobirjon, Adizov A1 Kadhum, Wesam R. A1 Al-Erjan, Amran M. A1 Abosaooda, Munther A1 Mahmoud, Aisha Kamal AB In the current body of research, a very quick and effectual procedure for the synthesis of pyrido[2,3-d:6,5-d']dipyrimidines has been developed. This method is accomplished through the one-pot multi-component reaction of 2-thiobarbituric acid, NH4OAc and aldehydes utilizing Ni-TMEDA@βSiO2@αSiO2@Fe3O4 as a novel mesoporous nanomagnetic catalyst at room temperature. This protocol is one of the few reports of the preparation of these derivatives without the use of conventional heating as well as energies such as microwave and ultrasound radiation. The characterization of the prepared catalyst was well accomplished by different techniques such as FT-IR, ICP-OES, SEM, TEM, BET, XRD, VSM, TGA, EDX and Elemental mapping. This organometallic catalyst was reusable for seven times with negligible decrement in its catalytic performance. In addition, all of the products were produced with high TON and TOF values, which demonstrates that our catalyst has a very high level of activity in the preparation of pyrido[2,3-d:6,5-d']dipyrimidines. PB Royal Society of Chemistry SN 2046-2069 YR 2023 FD 2023-04-14 LK https://hdl.handle.net/10016/39122 UL https://hdl.handle.net/10016/39122 LA eng NO Correction, Published: 06 June 2023, in RSC Advances, 2023, 13 (25), p.16984. https://doi.org/10.1039/d3ra90048g DS e-Archivo RD 1 jul. 2024