{"title":"Ecologically Sound Syntheses of Imidazoindole Derivatives Mediated by Cu-MCM-41-phen under Room Temperature","authors":"Narmatha Venkatesan, Bharathi Madheswaran, Denzil Britto Christopher Leslee, Jayapratha Gunasekaran, Shanmuga Bharathi Kuppannan","doi":"10.1007/s12633-025-03238-2","DOIUrl":null,"url":null,"abstract":"<div><p>A Copper(II) complex was synthesized using Indolic Schiff base and 1,10 phenanthroline which upon immobilisation on MCM-41 yields selective, efficient and retrievable heterogeneous catalyst through its active site dispersions. The physicochemical properties of the produced catalyst were observed by FT-IR, UV–Vis DRS, PXRD, SEM, EDX, ICP-OES, TEM, N<sub>2</sub> adsorption and desorption, TGA, <sup>13</sup>C MAS-NMR and XPS. The catalytic efficiency of the synthesized catalyst was tested in the imidazoindole reactions through variety of aldehydes, isatin and ammonium acetate using ethanol as solvent under room temperature for 30 min and found its reusability up to six runs with consistent activity. The catalyst illustrates good to excellent yield for the different substrates including electron donating, electron withdrawing, disubstituted, fused, conjugated, heterocyclic and aliphatic aldehydes.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":776,"journal":{"name":"Silicon","volume":"17 4","pages":"905 - 923"},"PeriodicalIF":2.8000,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Silicon","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12633-025-03238-2","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A Copper(II) complex was synthesized using Indolic Schiff base and 1,10 phenanthroline which upon immobilisation on MCM-41 yields selective, efficient and retrievable heterogeneous catalyst through its active site dispersions. The physicochemical properties of the produced catalyst were observed by FT-IR, UV–Vis DRS, PXRD, SEM, EDX, ICP-OES, TEM, N2 adsorption and desorption, TGA, 13C MAS-NMR and XPS. The catalytic efficiency of the synthesized catalyst was tested in the imidazoindole reactions through variety of aldehydes, isatin and ammonium acetate using ethanol as solvent under room temperature for 30 min and found its reusability up to six runs with consistent activity. The catalyst illustrates good to excellent yield for the different substrates including electron donating, electron withdrawing, disubstituted, fused, conjugated, heterocyclic and aliphatic aldehydes.
期刊介绍：
The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.
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