1032817-99-4Relevant academic research and scientific papers
Synthesis of Oxazolidinones by using Carbon Dioxide as a C1 Building Block and an Aluminium-Based Catalyst
Sengoden, Mani,North, Michael,Whitwood, Adrian C.
, p. 3296 - 3303 (2019)
Oxazolidinone synthesis through the coupling of carbon dioxide and aziridines was catalysed by an aluminium(salphen) complex at 50–100 °C and 1–10 bar pressure under solvent-free conditions. The process was applicable to a variety of substituted aziridines, giving products with high regioselectivity. It involved the use of a sustainable and reusable aluminium-based catalyst, used carbon dioxide as a C1 source and provided access to pharmaceutically important oxazolidinones as illustrated by a total synthesis of toloxatone. This protocol was scalable, and the catalyst could be recovered and reused. A catalytic cycle was proposed based on stereochemical, kinetic and Hammett studies.
N-heterocyclic olefins as robust organocatalyst for the chemical conversion of carbon dioxide to value-added chemicals
Saptal, Vitthal B.,Bhanage, Bhalchandra M.
, p. 1980 - 1985 (2016)
In this report, the activity of N-heterocyclic olefins (NHOs) as a newly emerging class of organocatalyst is investigated for the chemical fixation of carbon dioxide through reactions with aziridines to form oxazolidinones and the N-formylation of amines with polymethylhydrosiloxane (PMHS) or 9-borabicy-clo[3.3.1]nonane (9-BBN) as the reducing agent under mild conditions. The exocyclic carbon atoms of NHOs are highly nucleophilic owing to the electron-donating ability of the two nitrogen atoms. This high nucleophilicity of the NHOs activates CO2 molecules to form zwitterionic NHO–carboxylate (NHO– CO2) adducts, which are active in formylation reactions as well as the carboxylation of aziridines to oxazolidinones.
Polystyrene-bound diethanolamine based ionic liquids for chemical fixation of CO2
Chen, Xi,Sun, Jian,Wang, Jinquan,Cheng, Weiguo
, p. 2684 - 2688 (2012)
Polystyrene-bound diethanolamine based ionic liquids (PS-DHEEAB and PS-THEAB) were synthesized and applied for the chemical fixation of CO 2 into cyclic carbonates without any additional co-catalyst and solvent. The effect of the catalysts with different number of hydroxyl group in the cation of the IL on the reaction was systematically investigated. Highest activity and selectivity were achieved in the presence of polystyrene supported diethanolamine ethyl bromide (PS-DHEEAB) in comparison with other catalysts employed. The catalyst was tough in stability and also found to be extended to a variety of terminal epoxides and aziridines. The relationship between high catalytic reactivity and the -OH functional groups was proposed.
Diethylammonium iodide as catalyst for the metal-free synthesis of 5-aryl-2-oxazolidinones from aziridines and carbon dioxide
Bresciani, Giulio,Bortoluzzi, Marco,Pampaloni, Guido,Marchetti, Fabio
, p. 4152 - 4161 (2021)
The catalytic potential of ammonium halide salts was explored in the coupling reaction of a model aziridine with carbon dioxide, highlighting the superior activity of [NH2Et2]I. Then, working at room temperature, atmospheric CO2 pressure and in the absenc
Equimolar carbon absorption by potassium phthalimide and in situ catalytic conversion under mild conditions
Zhang, Shuai,Li, Yu-Nong,Zhang, Ya-Wei,He, Liang-Nian,Yu, Bing,Song, Qing-Wen,Lang, Xian-Dong
, p. 1484 - 1489 (2014)
Potassium phthalimide, with weak basicity, is an excellent absorbent for rapid carbon dioxide capture with almost equimolar absorption. This process is assumed to proceed through the potassium carbamate formation pathway, as supported by NMR spectroscopy, an in situ FTIR study, and computational calculations. Both the basicity and nucleophilicity of phthalimide salts have a crucial effect on the capture process. Furthermore, the captured carbon dioxide could more easily be converted in situ into value-added chemicals and fuel-related products through carbon capture and utilization, rather than going through a desorption process. In a fix: Potassium phthalimide is as an excellent absorbent for equimolar CO2 capture with simultaneous activation. The in situ catalytic conversion of captured CO2 can be successfully converted into value-added chemicals and fuel-related products under mild conditions through a carbon capture and utilization pathway, rather than going through desorption process.
Mesoporous zirconium phosphonates as efficient catalysts for chemical CO2 fixation
Lin, Xiu-Zhen,Yang, Zhen-Zhen,He, Liang-Nian,Yuan, Zhong-Yong
, p. 795 - 798 (2015)
Mesoporous zirconium phosphonates were demonstrated as highly effective catalysts for the heterogeneously catalyzed cycloaddition reaction between aziridines and CO2 to yield oxazolidinones in a solvent-free system without introducing any co-catalysts or halogen species, exhibiting outstanding activity and selectivity, as well as excellent recyclability. This journal is
An uncommon multicentered ZnI-ZnIbond-based MOF for CO2fixation with aziridines/epoxides
Cao, Chun-Shuai,Shi, Ying,Xu, Hang,Zhao, Bin
supporting information, p. 7537 - 7540 (2021/08/05)
A novel cluster-based MOF with uncommon multicentered ZnI-ZnIbonds {[K1.2Na2.8ZnI8(HL)12]·4H2O}n(HL = tetrazole monoanion) (1) was synthesized, which showed higher stability than the reported ZnI-ZnIbonded compounds. Moreover,1can effectively and circularly catalyze the cyclization of CO2and aziridines or epoxides with five substituent groups. Importantly, this is the first time that the catalytic properties of MOFs with multicentered metal-metal bonded clusters as the catalyst have been studied.
Two Stable Heterometal-MOFs as Highly Efficient and Recyclable Catalysts in the CO2 Coupling Reaction with Aziridines
Kang, Xiao-Min,Yao, Lin-Hong,Jiao, Zhuo-Hao,Zhao, Bin
, p. 3668 - 3674 (2019/08/01)
Two stable heterometal-organic frameworks, {Na[LnCo(DATP)2(Ac)(H2O)](NO3)?DMA?11 H2O}n (Ln=Er(1) and Yb(2)), have been prepared with H2DATP (4′-(3,5-dicarboxyphenyl)-2,2′:6′,2′′′-terpyridin
Cycloaddition of Aziridine with CO2/CS2 Catalyzed by Amidato Divalent Lanthanide Complexes
Xie, Yueqin,Lu, Chengrong,Zhao, Bei,Wang, Qianyu,Yao, Yingming
, (2019/02/14)
This is the first time that the amidato lanthanide amides ({LnLn[N(SiMe3)2]THF}2 (n = 1, Ln = Eu (1); n = 2, Ln = Eu (3), Yb (4); HL1 = tBuC6H4CONHC6H3(iPr)2; HL2 = C6H5CONHC6H3(iPr)2) and {L3Eu[N(SiMe3)2]THF}{L32Eu(THF)2} (2) (HL3 = ClC6H4CONHC6H3(iPr)2)) were applied in the cycloaddition reactions of aziridines with carbon dioxide (CO2) or carbon disulfide (CS2) under mild conditions. The corresponding oxazolidinones and thiazolidine-2-thiones were obtained in good to excellent yields with good functional group tolerance.
A multifunctional MOF as a recyclable catalyst for the fixation of CO2 with aziridines or epoxides and as a luminescent probe of Cr(VI)
Cao, Chun-Shuai,Shi, Ying,Xu, Hang,Zhao, Bin
, p. 4545 - 4553 (2018/04/02)
A multifunctional metal-organic framework (1) containing 24-nuclear zinc nanocages shows high solvent- and pH-stability. Compound 1 can be employed as a catalyst for the conversion of CO2 with aziridines or epoxides, which can be reused at leas
