The Passerini three-component reaction of carboxylic acid, aromatic aldehyde and isocyanide was carried out smoothly and efficiently in ionic liquid [bmim]BF4. Through this reaction, a series of α-acyloxycarboxamides...The Passerini three-component reaction of carboxylic acid, aromatic aldehyde and isocyanide was carried out smoothly and efficiently in ionic liquid [bmim]BF4. Through this reaction, a series of α-acyloxycarboxamides were obtained in high yields. Advantages of this proccedure include a green nature, high efficiency and operational simplicity展开更多
A green microwave-assisted procedure for the preparation of a series of fifteen new N-alkylpyridazinium ionic liquids with different functionality in the alkyl chain is described. For the first time, target ionic liqu...A green microwave-assisted procedure for the preparation of a series of fifteen new N-alkylpyridazinium ionic liquids with different functionality in the alkyl chain is described. For the first time, target ionic liquids were prepared using standard methodology and under microwave irradiation in short duration of time with quantitative yields. In most cases, the microwave-assisted reaction is an environmentally friendly alternative to traditional methods.展开更多
An efficient and green method for the synthesis of 1, 4-dihydropyridine derivatives mediated in an ionic liquid, [bmim][BF4], through a four-component condensation process of aldehydes, 1, 3-dione, Meldrum＇s acid and...An efficient and green method for the synthesis of 1, 4-dihydropyridine derivatives mediated in an ionic liquid, [bmim][BF4], through a four-component condensation process of aldehydes, 1, 3-dione, Meldrum＇s acid and ammonium acetate is disclosed in this paper.展开更多
Quantum chemical calculation was used to estimate the reduction potentials of 25 organic cations and the oxidation potentials of 11 anions.This information was used to select promising cations and anions for the prepa...Quantum chemical calculation was used to estimate the reduction potentials of 25 organic cations and the oxidation potentials of 11 anions.This information was used to select promising cations and anions for the preparation of ionic liquids as green electrolytes for electrodeposition of active metals.The reasonable linear correlations between the lowest unoccupied molecular orbital(LUMO)energies and the reduction potentials of cations,and the linear relationships between the oxidation potentials and the highest occupied molecular orbital(HOMO)energies of anions were obtained.The orders of electrochemical stability for cations and anions being obtained agree well with the experimental measurements.The suitable ionic liquids with sufficiently wide electrochemical windows for electrodeposition of active metals are suggested to be[Emim]NTf2,[Bmim]NTf2,[Bmim]BF4, [Bmim]PF6,[Bmim]CTf3,[Emim]BF4,[Emim]PF6,[Emim]CTf3..展开更多
爱奥尼亚的液体(IL ) 是由于他们的唯一的性质在最近的年里吸引了大注意的绿溶剂。在这篇论文，在 IL 的基本研究和应用的最近的进步被总结了，与物理性质，催化反应，和生化工程的话题上的强调。在 IL 的应用的批评问题是地址，并且 IL...爱奥尼亚的液体(IL ) 是由于他们的唯一的性质在最近的年里吸引了大注意的绿溶剂。在这篇论文，在 IL 的基本研究和应用的最近的进步被总结了，与物理性质，催化反应，和生化工程的话题上的强调。在 IL 的应用的批评问题是地址，并且 IL 未来最后被预言。展开更多
文摘The Passerini three-component reaction of carboxylic acid, aromatic aldehyde and isocyanide was carried out smoothly and efficiently in ionic liquid [bmim]BF4. Through this reaction, a series of α-acyloxycarboxamides were obtained in high yields. Advantages of this proccedure include a green nature, high efficiency and operational simplicity
文摘A green microwave-assisted procedure for the preparation of a series of fifteen new N-alkylpyridazinium ionic liquids with different functionality in the alkyl chain is described. For the first time, target ionic liquids were prepared using standard methodology and under microwave irradiation in short duration of time with quantitative yields. In most cases, the microwave-assisted reaction is an environmentally friendly alternative to traditional methods.
文摘An efficient and green method for the synthesis of 1, 4-dihydropyridine derivatives mediated in an ionic liquid, [bmim][BF4], through a four-component condensation process of aldehydes, 1, 3-dione, Meldrum＇s acid and ammonium acetate is disclosed in this paper.
基金Projects(50564006,50904031)supported by the National Natural Science Foundation of ChinaProjects(2005E0004Z,2008E0049M)supported by the Natural Science Foundation of Yunnan Province,China+1 种基金Project(07Z40082)supported by the Science Foundation of the Education Department of Yunnan Province,ChinaProject(2007-16)supported by the Science Foundation of Kunming University of Science and Technology,China
文摘Quantum chemical calculation was used to estimate the reduction potentials of 25 organic cations and the oxidation potentials of 11 anions.This information was used to select promising cations and anions for the preparation of ionic liquids as green electrolytes for electrodeposition of active metals.The reasonable linear correlations between the lowest unoccupied molecular orbital(LUMO)energies and the reduction potentials of cations,and the linear relationships between the oxidation potentials and the highest occupied molecular orbital(HOMO)energies of anions were obtained.The orders of electrochemical stability for cations and anions being obtained agree well with the experimental measurements.The suitable ionic liquids with sufficiently wide electrochemical windows for electrodeposition of active metals are suggested to be[Emim]NTf2,[Bmim]NTf2,[Bmim]BF4, [Bmim]PF6,[Bmim]CTf3,[Emim]BF4,[Emim]PF6,[Emim]CTf3..
基金Supported by the National Natural Science Foundation of China (No. 20273019) and the ScienceFoundation of Henan Normal University for Young Scholars (No. 0307032).
