2510-33-0Relevant articles and documents
Cooperative Catalysis of Ru(III)-Porphyrin in CO2-Involved Synthesis of Oxazolidinones
Chen, Xiao-Chao,Yao, Yin-Qing,Zhao, Kai-Chun,Liu, Lei,Lu, Yong,Liu, Ye
, p. 2504 - 2510 (2021/07/28)
CO2-transformations into high value-added products have become a fascinating area in green chemistry. Herein, a Ru(III)-porphyrin catalyst (RuCl3 ? 3H2O?H2TPP) was found highly efficient in the three-component reaction of CO2, aliphatic amines and dichloroethane (or its derivative) for synthesis of oxazolidinones in the yields of 71～91%. It was indicated by means of the control experiments and UV-vis spectra that CO2 was stoichiometrically activated by the involved aliphatic amine substrates to form a stable carbamate salt while 1,2-dichloroethane (or its derivative) was independently activated by the involved Ru(III)-porphyrin catalyst. The combination of CO2-activation by aliphatic amines with 1,2-dichloroethane activation by Ru(III)-porphyrin catalyst cooperatively contributed to this successful transformation.
An efficient and recyclable AgNO3/ionic liquid system catalyzed atmospheric CO2 utilization: Simultaneous synthesis of 2-oxazolidinones and α-hydroxyl ketones
Bu, Chao,Chaemchuen, Somboon,Chen, Cheng,Du, Minchen,Gong, Yanyan,Hu, Jia,Verpoort, Francis,Yuan, Ye,Zhang, Yongxing
, p. 70 - 82 (2020/12/21)
Oxazolidinones and α-hydroxyl ketones are two series of fine chemicals that have been generally utilized in biological, pharmaceutical, and synthetic chemistry. Herein, a AgNO3/ionic liquid (IL) catalytic system was developed for the simultaneous synthesis of these compounds through the atom-economical three-component reactions of propargyl alcohols, 2-aminoethanols, and CO2. Notably, this system behaved excellent catalytic activity with the lowermost metal loading of 0.25 mol%. Meanwhile, it is the first reported metal-catalyzed system that could efficiently work under atmospheric CO2 pressure and be recycled at least five times. Evaluation of the green metrics proved the AgNO3/IL-catalyzed processes to be relatively more sustainable and greener than the other Ag-catalyzed examples. Further mechanistic investigations revealed the derivative active species of N-heterocyclic carbene (NHC) silver complexes and CO2 adducts generated during the process. Subsequently, their reactivity in this reaction was assessed for the first time, which was finally identified as beneficial for the catalytic activity.
Method for synthesizing cyclic amide from carbon dioxide
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Paragraph 0013, (2019/12/29)
The invention discloses a method for synthesizing cyclic amide from carbon dioxide. An aromatic amino compound, 1 atm carbon dioxide and a halogenated compound undergo a one-step reaction under the synergistic action of N-doped TiO2 and an inorganic salt catalyst to generate the cyclic amide. Studies find that visible light has an obvious promoting effect on the conversion process. The chemical selectivity of the cyclic amide compound can be regulated by regulating conditions such as reaction temperature, time and illumination. The catalyst can be recycled for five times after being separatedand dried, and the activity and the chemical selectivity can be well maintained. The synthesis method has the advantages of simple synthetic route, novelty, simple process, high yield and high purityof the product, cheap and easily available catalyst, no influences on the environment, and suitableness for industrial production.
