{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T18:31:04Z","timestamp":1791311464636,"version":"4.3.1"},"reference-count":42,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2025,1,31]],"date-time":"2025-01-31T00:00:00Z","timestamp":1738281600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22268023"],"award-info":[{"award-number":["22268023"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The conversion of CO2 into 2-oxazolidinones through carboxylative cyclization with propargylic amines is considered an effective method for utilizing waste gas as a sustainable C1 resource and mitigating the greenhouse effect. In this context, a series of nano-SiO2-supported ionic liquids have been prepared and developed as multifunctional heterogeneous catalysts in the carboxylative cyclization of propargylic amines with CO2. The catalyst IL-SbF6@nano-SiO2 demonstrated a high compatibility with various propargylic amines, achieving excellent yields (90~98%) for the desired 2-oxazolidinones under mild conditions. Additionally, IL-SbF6@nano-SiO2 can be easily separated from the reaction mixture and reused for up to six cycles without any significant activity loss. This is important for sustainable chemistry, as it reduces waste and potentially lowers costs. This study offers novel insights into the development and design of green and efficient catalysts for the synthesis of 2-oxazolidinones from carbon dioxide.<\/jats:p>","DOI":"10.3390\/molecules30030633","type":"journal-article","created":{"date-parts":[[2025,2,3]],"date-time":"2025-02-03T12:18:56Z","timestamp":1738585136000},"page":"633","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Novel and Highly Efficient Carboxylative Cyclization of CO2 to 2-Oxazolidinones Using Nano-SiO2-Supported Ionic Liquid Sustainable Catalysts"],"prefix":"10.3390","volume":"30","author":[{"given":"Yulin","family":"Hu","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Anshun University, Anshun 561000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zongyan","family":"Tang","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Anshun University, Anshun 561000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7623-0804","authenticated-orcid":false,"given":"Xiaobing","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5174","DOI":"10.1039\/D1TA07856A","article-title":"Research progress in metal\u2013organic frameworks (MOFs) in CO2 capture from post-combustion coal-fired flue gas: Characteristics, preparation, modification and applications","volume":"10","author":"Sun","year":"2022","journal-title":"J. Mater. Chem. A"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Chen, T.W., Chen, S.M., Anushya, G., Kannan, R., Al-Sehemi, A.G., Alargarsamy, S., Gajendran, P., and Ramachandran, R. (2023). Development of different kinds of electrocatalyst for the electrochemical reduction of carbon dioxide reactions: An overview. Molecules, 28.","DOI":"10.3390\/molecules28207016"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1701","DOI":"10.1039\/D1RE00214G","article-title":"Impact of structure, doping and defect-engineering in 2D materials on CO2 capture and conversion","volume":"6","author":"Jelmy","year":"2021","journal-title":"React. Chem. Eng."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1773","DOI":"10.1039\/D2CS00456A","article-title":"Advanced zeolite and ordered mesoporous silica-based catalysts for the conversion of CO2 to chemicals and fuels","volume":"52","author":"Velty","year":"2023","journal-title":"Chem. Soc. Rev."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"13661","DOI":"10.1039\/D3SC03907B","article-title":"Advances in CO2 activation by frustrated Lewis pairs: From stoichiometric to catalytic reactions","volume":"14","author":"Khan","year":"2023","journal-title":"Chem. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Baran, T., Caringella, D., Dibenedetto, A., and Aresta, M. (2024). Pitfalls in photochemical and photoelectrochemical reduction of CO2 to energy products. Molecules, 29.","DOI":"10.3390\/molecules29194758"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"120","DOI":"10.1016\/j.jcou.2017.03.009","article-title":"Chemical fixation of CO2 to N-propargylamines: A straightforward route to 2-oxazolidinones","volume":"19","author":"Arshadi","year":"2017","journal-title":"J. CO2 Util."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1016\/S1872-5813(22)60055-0","article-title":"Recent advances on oxazolidinones synthesize from carbon dioxide","volume":"51","author":"Wang","year":"2023","journal-title":"J. Fuel Chem. Technol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"15578","DOI":"10.1002\/chem.201203366","article-title":"Synthesis of oxazolidinones by efficient fixation of atmospheric CO2 with propargylic amines by using a silver\/1,8-diazabicyclo [5.4.0]undec-7-ene (DBU) dual-catalyst system","volume":"18","author":"Yoshida","year":"2012","journal-title":"Chem. Eur. J."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1210","DOI":"10.1002\/cssc.201601469","article-title":"In situ generated zinc(II) catalyst for incorporation of CO2 into 2-oxazolidinones with propargylic amines at atmospheric pressure","volume":"10","author":"Liu","year":"2017","journal-title":"ChemSusChem"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"5553","DOI":"10.1021\/acssuschemeng.6b01288","article-title":"New copper(I)\/DBU catalyst system for the carboxylative cyclization of propargylic amines with atmospheric CO2: An experimental and theoretical study","volume":"4","author":"Zhao","year":"2016","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"13450","DOI":"10.1021\/acs.inorgchem.4c01453","article-title":"Conversion of propargylic amines with CO2 catalyzed by a highly stable copper(I) iodide thorium-based heterometal\u2013organic framework","volume":"63","author":"Wu","year":"2024","journal-title":"Inorg. Chem."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1938","DOI":"10.1039\/D2GC04313K","article-title":"Stepwise engineering of the pore environment within metal\u2013organic frameworks for green conversion of CO2 and propargylic amines","volume":"25","author":"Zhang","year":"2023","journal-title":"Green Chem."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2783","DOI":"10.1039\/C8CS00829A","article-title":"Carbon capture and conversion using metal\u2013organic frameworks and MOF-based materials","volume":"48","author":"Ding","year":"2019","journal-title":"Chem. Soc. Rev."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"15488","DOI":"10.1021\/acsanm.4c02393","article-title":"Copper nanoparticles anchored on the metal\u2013organic framework as recyclable catalyst for CO2 fixation to high-value compounds","volume":"7","author":"Giri","year":"2024","journal-title":"ACS Appl. Nano Mater."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"4657","DOI":"10.1039\/C9DT00017H","article-title":"Ag NPs decorated on a COF in the presence of DBU as an efficient catalytic system for the synthesis of tetramic acids via CO2 fixation into propargylic amines at atmospheric pressure","volume":"48","author":"Ghosh","year":"2019","journal-title":"Dalton Trans."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"5557","DOI":"10.1039\/D3GC01334K","article-title":"Covalent organic frameworks embedding single cadmium sites for efficient carboxylative cyclization of CO2 with propargylic amines","volume":"25","author":"Zhang","year":"2023","journal-title":"Green Chem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"5495","DOI":"10.1021\/acssuschemeng.9b06704","article-title":"Utility of silver nanoparticles embedded covalent organic frameworks as recyclable catalysts for the sustainable synthesis of cyclic carbamates and 2-oxazolidinones via atmospheric cyclizative CO2 capture","volume":"8","author":"Ghosh","year":"2020","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"6172","DOI":"10.1039\/D4GC00122B","article-title":"CuI-anchored porous covalent organic frameworks for highly efficient conversion of propargylic amines with CO2 from flue gas","volume":"26","author":"Qiu","year":"2024","journal-title":"Green Chem."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"7878","DOI":"10.1021\/acs.cgd.4c00739","article-title":"Functionalized Covalent Triazine Framework (CTF) for catalytic CO2 fixation and synthesis of value-added chemicals","volume":"24","author":"Kishan","year":"2024","journal-title":"Cryst. Growth Des."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"152557","DOI":"10.1016\/j.tetlet.2020.152557","article-title":"Silica-catalyzed carboxylative cyclization of propargylic amines with CO2","volume":"61","author":"Matsuo","year":"2020","journal-title":"Tetrahedron Lett."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1205","DOI":"10.1016\/j.tet.2016.01.016","article-title":"Carboxylative cyclization of propargylic amines with CO2 catalyzed by dendritic N-heterocyclic carbene\u2013gold(I) complexes","volume":"72","author":"Fujita","year":"2016","journal-title":"Tetrahedron"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"829","DOI":"10.1039\/C1CS15146K","article-title":"Surface tension of ionic liquids and ionic liquid solutions","volume":"41","author":"Tariq","year":"2012","journal-title":"Chem. Soc. Rev."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Ab Rahim, A.H., Yunus, N.M., and Bustam, M.A. (2023). Ionic liquids hybridization for carbon dioxide capture: A review. Molecules, 28.","DOI":"10.3390\/molecules28207091"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Wi\u0119c\u0142awik, J., and Chrobok, A. (2023). Gallium(III)- and indium(III)-containing ionic liquids as highly active catalysts in organic synthesis. Molecules, 28.","DOI":"10.3390\/molecules28041955"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"726","DOI":"10.1039\/D0CY02274H","article-title":"Basic ionic liquids for catalysis: The road to greater stability","volume":"11","author":"McNeice","year":"2021","journal-title":"Catal. Sci. Technol."},{"key":"ref_27","unstructured":"Zhang, S.J., and Lu, X.M. (2006). Ionic Liquids: From Fundamental Research to Industrial Applications, Science Press."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"282","DOI":"10.1039\/C5GC02311D","article-title":"Efficient conversion of carbon dioxide at atmospheric pressure to 2-oxazolidinones promoted by bifunctional Cu(II)-substituted polyoxometalate-based ionic liquids","volume":"18","author":"Wang","year":"2016","journal-title":"Green Chem."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"8138","DOI":"10.1039\/D4OB01087F","article-title":"Conversion of atmospheric CO2 catalyzed by thiolate-based ionic liquids under mild conditions: Efficient synthesis of 2-oxazolidinones","volume":"22","author":"Wu","year":"2024","journal-title":"Org. Biomol. Chem."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"14676","DOI":"10.1038\/ncomms14676","article-title":"Integrated CO2 capture-fixation chemistry via interfacial ionic liquid catalyst in laminar gas\/liquid flow","volume":"8","author":"Vishwakarma","year":"2017","journal-title":"Nat. Commun."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"e202201359","DOI":"10.1002\/cctc.202201359","article-title":"Synthesis of polycarbonates from CO2 promoted by immobilized ionic liquid functionalized di-Mg complex catalyst","volume":"15","author":"Pappuru","year":"2023","journal-title":"ChemCatChem"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1016\/j.jcou.2014.08.001","article-title":"An efficient synthesis of quinazoline-2,4(1H,3H)-dione from CO2 and 2-aminobenzonitrile using [Hmim]OH\/SiO2 as a base functionalized supported ionic liquid phase catalyst","volume":"8","author":"Nale","year":"2014","journal-title":"J. CO2 Util."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"9045","DOI":"10.1021\/acs.iecr.7b02803","article-title":"Heterogenization of a green homogeneous catalyst: Synthesis and characterization of imidazolium ionene\/Br\u2013Cl\u2013@SiO2 as an efficient catalyst for the cycloaddition of CO2 with epoxides","volume":"56","author":"Akbari","year":"2017","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"13131","DOI":"10.1021\/acssuschemeng.8b02627","article-title":"Continuous conversion of carbon dioxide to propylene carbonate with supported ionic liquids","volume":"6","author":"Martinez","year":"2018","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"4781","DOI":"10.1021\/cm501840d","article-title":"BMIm-PF6@SiO2 microcapsules: Particulated ionic liquid as a new material for the heterogenization of catalysts","volume":"26","author":"Weiss","year":"2014","journal-title":"Chem. Mater."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"34057","DOI":"10.1021\/acsami.4c04580","article-title":"Ionic liquid-based silane for SiO2 nanoparticles: A versatile coupling agent for dental resins","volume":"16","author":"Garcia","year":"2024","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"126537","DOI":"10.1016\/j.polymer.2023.126537","article-title":"Preparation of ionic liquid@SiO2 nanocapsules for improving self-lubricating performance of PA6 composites","volume":"290","author":"Li","year":"2024","journal-title":"Polymer"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"100876","DOI":"10.1016\/j.coco.2021.100876","article-title":"Synergistic enhancement effect of nano-SiO2 and ionic liquids on mechanical properties and impact resistance of polyurethane elastomer","volume":"27","author":"Hu","year":"2021","journal-title":"Compos. Commun."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"148","DOI":"10.1016\/j.molliq.2018.02.011","article-title":"Temperature dependent physicochemical and spectroscopic (FT-IR) studies of citrate salts (trilithium citrate and triammonium citrate) in aqueous ionic liquid [C4mim][BF4] (1-butyl-3-methyl imidazolium tetrafluroborate) solutions","volume":"256","author":"Kumar","year":"2018","journal-title":"J. Mol. Liq."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1672","DOI":"10.1016\/j.optmat.2004.11.051","article-title":"The optical spectroscopy of lanthanides R3+ in ABi(XO4)2 (A = Li, Na; X = Mo, W) and LiYb(MoO4)2 multifunctional single crystals: Relationship with the structural local disorder","volume":"27","author":"Cascales","year":"2005","journal-title":"Opt. Mater."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1016\/j.vibspec.2010.11.005","article-title":"Infrared and Raman studies of the anion ordering transitions in paramagnetic organometallic radical cation salts [Cp2Mo(dmit)]X (X = PF6, SbF6)","volume":"55","author":"Jankowski","year":"2011","journal-title":"Vib. Spectrosc."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/S1387-1811(02)00403-1","article-title":"Determination of the framework and non-framework [SiO2] and [AlO2] species of steamed and leached faujasite type zeolites: Calibration of IR, NMR, and XRD data by chemical methods","volume":"55","author":"Lutz","year":"2002","journal-title":"Micropor. Mesopor. Mater."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/30\/3\/633\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T16:25:10Z","timestamp":1760027110000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/30\/3\/633"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,1,31]]},"references-count":42,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2025,2]]}},"alternative-id":["molecules30030633"],"URL":"https:\/\/doi.org\/10.3390\/molecules30030633","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,1,31]]}}}