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Synthesis and kinetics of 2,5-dicyanofuran in the presence of hydroxylamine ionic liquid salts 被引量:2
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作者 Xuan Gao Zhihui Li +2 位作者 Dongsheng Zhang Xinqiang Zhao Yanji Wang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第1期310-316,共7页
2,5-Dicyanofuran(DCF)is an important biomass-derived platform compound primarily used to prepare bio-based adiponitrile,which is the key precursor for the synthesis of nylon 66 and 1,6-hexanediisocyanate(HDI).In this ... 2,5-Dicyanofuran(DCF)is an important biomass-derived platform compound primarily used to prepare bio-based adiponitrile,which is the key precursor for the synthesis of nylon 66 and 1,6-hexanediisocyanate(HDI).In this study,one-pot,green and safe synthesis of DCF from 2,5-diformylfuran(DFF)and hydroxylamine ionic liquid salts was proposed.Eco-friendly hydroxylamine ionic liquid salts were used as the nitrogen source.Ionic liquid exhibited three-fold function of cosolvent,catalysis and phase separation.The conversion of DFF and yield of DCF reached 100%under the following optimum reaction conditions:temperature of 120℃ for 70 min,volume ratio of paraxylene:[HSO_(3)-b-Py]HSO4 of 2:1,and molar ratio of DFF:(NH_(2)OH)_(2)[HSO_(3)-b-Py]HSO4 of 1:1.5.The reaction mechanism for the synthesis of DCF was proposed,and the kinetic model was established.The reaction order with respect to DFF and intermediate product 2,5-diformylfuran dioxime(DFFD)was 1.06 and 0.16,and the reaction activation energy was 64.07 kJ·mol^(-1) and 59.37 kJ·mol^(-1) respectively.After the reaction,the ionic liquid was easy to separate,recover and recycle. 展开更多
关键词 2 5-Dicyanofuran Hydroxylamine ionic liquid salts Green synthesis KINETICS
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Ionic liquids-SBA-15 hybrid catalysts for highly efficient and solvent-free synthesis of diphenyl carbonate 被引量:1
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作者 Songlin Wang Qiying Zhang +3 位作者 Chengxing Cui Hongying Niu Cailing Wu Jianji Wang 《Green Energy & Environment》 SCIE EI CSCD 2023年第1期183-193,共11页
Diphenyl carbonate(DPC)is one of the versatile carbonates,and is often used for the production of polycarbonates.In recent years,the catalytic synthesis of DPC has become an important topic but the development of a hi... Diphenyl carbonate(DPC)is one of the versatile carbonates,and is often used for the production of polycarbonates.In recent years,the catalytic synthesis of DPC has become an important topic but the development of a highly active metal-free catalyst is a great challenge.Herein,a series of ionic liquids-SBA-15 hybrid catalysts with different functional groups have been developed for the synthesis of DPC under solventfree condition,which are effective and clean instead of the metal-containing catalysts.It is found that in the presence of[SBA-15-IL-OH]Br catalyst,methyl phenyl carbonate(MPC)conversion of 80.5%along with 99.6%DPC selectivity is achieved,the TOF value is thrice higher than the best value reported by using transition metal-based catalysts.Moreover,the catalyst displays remarkable stability and recyclability.This work provides a new idea to design and prepare eco-friendly catalysts in a broad range of applications for the green synthesis of carbonates. 展开更多
关键词 Diphenyl carbonate ionic liquid Mesoporous silica DISPROPORTIONATION Catalytic synthesis
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Synthesis and Characterization of Dual Acidic Ionic Liquids 被引量:5
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作者 Xiao Hua WANG Guo Hong TAO Zi Yan ZHANG Yuan KOU 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第12期1563-1565,共3页
Novel ionic liquids with dual acidity, of which the cation contains Brφnsted acidity and anions contain Lewis acidity were synthesized. These ionic liquids obtained were identified by NMR, FF-IR, SDT and FAB-MS. Thei... Novel ionic liquids with dual acidity, of which the cation contains Brφnsted acidity and anions contain Lewis acidity were synthesized. These ionic liquids obtained were identified by NMR, FF-IR, SDT and FAB-MS. Their acidities were determined by pyridine probe on IR spectrography. 展开更多
关键词 ionic liquids FUNCTIONAL dual acidity synthesis CHARACTERIZATION
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Synthesis of Tetrahydrofuran and Tetrahydropyran Derivatives Catalyzed by Tungstophosphoric Acid in Ionic Liquid 被引量:5
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作者 Wen PEI Li SUN +1 位作者 Chun Hua XIONG Chen SHEN 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第9期1155-1157,共3页
Synthesis of tetrahydrofuran and tetrahydropyran derivatives catalyzed by tungstophosphoric acid (H3PW12040) were conveniently performed with high yield from the corresponding unsaturated alcohols in ionic liquid. S... Synthesis of tetrahydrofuran and tetrahydropyran derivatives catalyzed by tungstophosphoric acid (H3PW12040) were conveniently performed with high yield from the corresponding unsaturated alcohols in ionic liquid. Sufuric acid (H2SO4), trifluoromathanesulfonic acid (TfOH) and p-toluenesulfonic acid (TsOH) were also explored for preparing these products in ionic liquid. The catalysts and ionic liquid can be easily recovered and reused. 展开更多
关键词 Tetrahydrofuran and tetrahydropyran derivatives tungstophosphoric acid ionic liquid CATALYST synthesis
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Ionic liquid mediated CO_2 activation for DMC synthesis 被引量:7
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作者 Jun Du Jing Shi +3 位作者 Zhengfei Li Zuohua Liu Xing Fan Changyuan Tao 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2012年第4期476-479,共4页
Promoted catalytic reaction between methanol and CO2 for dimethyl carbonate (DMC) synthesis is conducted over K2CO3/CH3I catalyst in the presence of ionic liquid under microwave irradiation. The effect of ionic liqu... Promoted catalytic reaction between methanol and CO2 for dimethyl carbonate (DMC) synthesis is conducted over K2CO3/CH3I catalyst in the presence of ionic liquid under microwave irradiation. The effect of ionic liquids incorporated with microwave irradiation on the yield of DMC is investigated. DMC was found to form at lower temperature in a relative short time, which indicated an enhanced catalytic process by ionic liquid. Among the ionic liquids used, 1-butyl-3-methylimidazolium chloride is the most effective promoter. Density functional theory calculations indicate that CO2 bond lengths and angles changed due to the molecular interaction of ionic liquid and CO2, resulting in the activation of CO2 molecules and consequently the acceleration of reaction rate. 展开更多
关键词 dimethyl carbonate direct synthesis MICROWAVE ionic liquids K2CO3/CH3I CO2
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Facile synthesis of thiourea derivatives in ionic liquid 被引量:4
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作者 Min Liang Xiao Feng Huang Chen +3 位作者 Zhi Juan Chen Bao Shou Guo Xian Hai Lv Wen Ming Tang 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第3期258-260,共3页
The synthesis of cinnamoyi thiourea derivatives from cinnamoyl isothiocyanate (CIT) with substituted aniline (RC6H4NH2) was investigated in the mostly used ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborat... The synthesis of cinnamoyi thiourea derivatives from cinnamoyl isothiocyanate (CIT) with substituted aniline (RC6H4NH2) was investigated in the mostly used ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, [Bmim][BF4]. Significant enhancements in reactivity, yield and reaction rate were achieved. The products could be recovered by simple filtration. [Bmlm] [BF4] could be recycled simply by removing water under vacuum and reused at least 9 times without significant decrease in activity. 展开更多
关键词 ionic liquid Cinnamoyl isotldocyanatc Substimte ANILINE Cinnamoyl tldourca derivatives synthesis
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Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst 被引量:5
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作者 Feng Ping Yi Hai Yang Sun +2 位作者 Xian Hua Pan Yuan Xu Ji Zong Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第3期275-278,共4页
Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl- 3-methylimidazolium tetrafluoroborate (abbreviated as [crnmim] [BF4]) as catalyst was su... Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl- 3-methylimidazolium tetrafluoroborate (abbreviated as [crnmim] [BF4]) as catalyst was successfully performed. The yields of the target compounds were 80-92%, the purities were 96-98%. The catalyst could be recovered and reused for at least six times without significant loss in activity. 展开更多
关键词 Functionalized ionic liquid CATALYST Fischer indole synthesis
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Synthesis of Multiester-appended and Multicarboxylic-appended Imidazolium Ionic Liquids 被引量:4
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作者 Wei Guo GENG Xuc Hui LI Le Fu WANG Hong Li DUAN Wei Ping PAN 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第2期169-172,共4页
Multiester-appended imidazolium ionic liquids were synthesized in a quatemization reaction between the imidazole derivatives carrying single or double esters and ethyl chloroacetate or bromoethane. Multicarboxylic-app... Multiester-appended imidazolium ionic liquids were synthesized in a quatemization reaction between the imidazole derivatives carrying single or double esters and ethyl chloroacetate or bromoethane. Multicarboxylic-appended imidazolium ionic liquids were achieved from the hydrolysis of the corresponding ionic liquids. The influences of multifunctional groups on the transition temperatures and viscosity of these new ionic liquids were investigated. 展开更多
关键词 ionic liquid multiester group multicarboxylic group synthesis
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Electrochemical Synthesis of Polythiophene in an Ionic Liquid 被引量:4
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作者 JiaHuaSHI XunSUN 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第4期306-307,共2页
Polythiophene (PTh) was prepared by the direct electrochemical synthesis in an ionic liquid ([BMIM]PF6) containing 0.1 mol/L thiophene by cyclic voltammetry, constant potential and constant current techniques. It is ... Polythiophene (PTh) was prepared by the direct electrochemical synthesis in an ionic liquid ([BMIM]PF6) containing 0.1 mol/L thiophene by cyclic voltammetry, constant potential and constant current techniques. It is found that smooth and bluegreen PTh films can be obtained at a potential of ca. +1.75 V ( vs. Ag/AgCl ) or a current of ca. 1.5 mA cm-2 in the ionic liquid. 展开更多
关键词 POLYTHIOPHENE electrochemical synthesis ionic liquid.
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One-pot Synthesis of Lewis Acidic Ionic Liquids for Friedel-Crafts Alkylation 被引量:3
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作者 Ling HE Guo Hong TAO Wei Shan LIU Wei XIONG Tao WANG Yuan KOU 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第3期321-324,共4页
Novel Lewis acidic ionic liquids containing thionyl cations and chloroaluminate anions were obtained by one-pot synthesis for the first time. Their acidities were determined by acetonitrile probe on IR spectrography. ... Novel Lewis acidic ionic liquids containing thionyl cations and chloroaluminate anions were obtained by one-pot synthesis for the first time. Their acidities were determined by acetonitrile probe on IR spectrography. The ionic liquids were used as catalyst for Friedel-Crafts alkylation of benzene and 1-dodecene. The turnovers of l-dodecene were higher than 99%. Monoalkylbenzene selectivity was 98%, while the 2-substituent product selectivity was 45%. 展开更多
关键词 ionic liquids green chemistry one-pot synthesis Lewis acidity alkylation.
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Solvent Free One-Pot Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles Catalyzed by Secondary Amine Based Ionic Liquid and Defective Keggin Heteropoly Acid 被引量:3
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作者 Pranab Jyoti Das Jupitara Das +1 位作者 Munni Ghosh Sabera Sultana 《Green and Sustainable Chemistry》 2013年第4期6-13,共8页
Secondary amine based ionic liquid and defective Keggin type heteropoly acid (HPA) are separately used for efficient one-pot four-component synthesis of 1,2,4,5-tetrasubstituted imidazoles assisted by microwave (MW). ... Secondary amine based ionic liquid and defective Keggin type heteropoly acid (HPA) are separately used for efficient one-pot four-component synthesis of 1,2,4,5-tetrasubstituted imidazoles assisted by microwave (MW). Eco-friendly solvent free procedure, short reaction time, high yield of products and reusability of catalysts are important features of the synthesis. A comparative study on the efficiency of the two catalysts is reported. This work further demonstrates the alternate use of urea, instead of often used ammonium acetate, as source of nitrogen. 展开更多
关键词 ionic Liquids KEGGIN HETEROPOLYACID Microwave Tetrasubstituted IMIDAZOLE SOLVENT Free synthesis Multicomponent Reaction
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Synthesis of fused pyran and arylbis(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)methane in ionic liquid 被引量:2
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作者 Xue Sen Fan Ying Ying Qu Xin Ying Zhang Xia Wang Jian Ji Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第4期387-390,共4页
Promoted and mediated by an ionic liquid-[bmim][BF4], fused pyrans or arylbis(4-hydroxy-6-methyl-2-oxo-2H-pyran-3- yl)methanes were efficiently and selectively prepared from the reaction of aldehyde and 4-hydroxy-6-... Promoted and mediated by an ionic liquid-[bmim][BF4], fused pyrans or arylbis(4-hydroxy-6-methyl-2-oxo-2H-pyran-3- yl)methanes were efficiently and selectively prepared from the reaction of aldehyde and 4-hydroxy-6-methyl-2-oxo-pyran with or without acetic anhydride. By using these novel procedures, pyrimidine nucleoside-fused pyran and arylbis(pyranon-3-yl)methane hybrids with potential biological activities were constructed. 展开更多
关键词 ionic liquid Fused pyran Arylbis(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)methane Pyrimidine nucleoside Green synthesis
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Heck Arylation of Cyclohexene Promoted by Ultrasonic and Microwave in Ionic Liquid: a Novel Method of the Synthesis of 3-Naphthylcyclohexene 被引量:1
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作者 Wen PEI Chen SHEN 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第12期1534-1536,共3页
Synthesis of 3-naphthylcyclohexene by the Heck reactions of bromonaphthalene and naphthyl triflates with cyclohexene catalyzed by palladiun and nickel complex (promoted by ultrasonic and microwave in ionic liquid of ... Synthesis of 3-naphthylcyclohexene by the Heck reactions of bromonaphthalene and naphthyl triflates with cyclohexene catalyzed by palladiun and nickel complex (promoted by ultrasonic and microwave in ionic liquid of [bmim][BF4I) were performed with high yield and good regioselectivity. This method has advantages of environmentally benign, generality, simplicity and potential for recycling of ionic liquid and catalyat. 展开更多
关键词 Naphthylcyclohexene palladium and nickel complex ionic liquid Heck reaction synthesis.
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A Novel Green Synthesis of Quinolines through Acid-catalyzed Friedlander Reaction in Ionic Liquids 被引量:1
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作者 XinYingZHANG XueSenFAN JianJiWANG YanZhenLI 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第10期1170-1172,共3页
Quinoline derivatives were efficiently prepared through acid-catalyzed Friedlander reaction in ionic liquid ([bmim][BF4]). It is shown that the proposed method is operationally simple and environmentally benign in tha... Quinoline derivatives were efficiently prepared through acid-catalyzed Friedlander reaction in ionic liquid ([bmim][BF4]). It is shown that the proposed method is operationally simple and environmentally benign in that the reaction media and the catalyst can be recovered and be reused effectively for at least four times. 展开更多
关键词 Quinoline derivatives Friedlander synthesis ionic liquid.
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A bifunctional and recyclable catalyst:Amine and ionic liquid grafting on MOFs for the one-pot synthesis of N-aryl oxazolidin-2-ones 被引量:3
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作者 Siying Chong Tongtong Wang +4 位作者 Haijun Zhong Lingfei Xu Hailong Xu Zhongwu Lv Min Ji 《Green Energy & Environment》 SCIE CSCD 2020年第2期154-165,共12页
A bifunctional heterogeneous catalyst was designed and synthesized,denoted DMEDA/IL–NH2-MIL-101.The structure and physical-chemical characterization of DMEDA/IL–NH2-MIL-101 and its precursors were characterized by S... A bifunctional heterogeneous catalyst was designed and synthesized,denoted DMEDA/IL–NH2-MIL-101.The structure and physical-chemical characterization of DMEDA/IL–NH2-MIL-101 and its precursors were characterized by SEM,N2 adsorption-desorption,XPS,FT-IR,PXRD,elemental analysis,and TGA techniques.The date showed that the two catalytic components of N,N-dimethylethylenediamine(DMEDA)and 1-butyl-3-methylimidazolium bromide(BmimBr)were chemically immobilized in NH2-MIL-101 nanocages.The amine of DMEDA was grafted onto carrier NH2-MIL-101 by N–Cr coordinate covalent bonds and the ionic liquid of BmimBr(IL(Br-))was anchored in the NH2-MIL-101 nanocages by'ship-in-a-bottle'method,in which the amidogen of NH2-MIL-101 condensed with N,N-carbonyldiimidazole(CDI)firstly,and then alkylated with 1-bromo butane.This novel heterogeneous catalyst with two different active sites can efficiently catalyze the synthesis of N-aryl oxazolidin-2-ones from carbon dioxide(CO2),epoxides,and anilines in one-pot under mild solvent-free conditions.It not only showed good stability and recoverability after five cycles but also exhibited shape selectivity for the substrate due to the synergic catalysis of amine,ionic liquid,and NH2-MIL-101.This novel bifunctional material is a promising solid catalyst for the green synthesis of N-aryl oxazolidin-2-ones. 展开更多
关键词 Metal-organic frameworks ionic liquid immobilization N-aryl oxazolidin-2-ones One-pot synthesis Bifunctional heterogeneous catalyst
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Synthesis of Aryl Allyl Ether in the Recyclable Ionic Liquid [bmim]PF_6
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作者 Zhou Mei-Yun Li Yi-Qun Xu Xin-Ming 《合成化学》 CAS CSCD 2004年第z1期56-56,共1页
关键词 ARYL ALLYL ether ionic liquid synthesis.
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Synthesis of 9-Arylpolyhydroacridine Promoted by Ionic Liquid Under Solvent-free Condition
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作者 Jian Hua WEI Yi Qun LI Xi Zhong LIAN Mei Yun ZHOU 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第7期874-876,共3页
The condensation reactions of aromatic aldehydes, 5,5-dimethyl-1,3-cyclohexanedione and ammonium acetate efficiently promoted by several ionic liquids under solvent-free condition to afford corresponding 3, 3, 6, 6-te... The condensation reactions of aromatic aldehydes, 5,5-dimethyl-1,3-cyclohexanedione and ammonium acetate efficiently promoted by several ionic liquids under solvent-free condition to afford corresponding 3, 3, 6, 6-tetramethyl-1, 8-dioxo-9-aryl-1, 2, 3, 4, 5, 6, 7, 8, 9, 10-decahydroacridines in good yields. 展开更多
关键词 9-Arylpolyhydroacridine ionic liquid synthesis.
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Synthesis and characterization of switchable ionic compound based on DBU, CH_3OH, and CO_2
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作者 谢元 Richard Parnas +3 位作者 梁斌 刘颖颖 陶川东 鲁厚芳 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第10期1728-1732,共5页
Switchable ionic compounds have wide applications in chemical processes.A switchable ionic compound based on 1,8-diazabicyclo-[5.4.0]-undec-7-ene(DBU),CH_3OH and CO_2 was synthesized and characterized.DBU/CH_3OH/CO_2 ... Switchable ionic compounds have wide applications in chemical processes.A switchable ionic compound based on 1,8-diazabicyclo-[5.4.0]-undec-7-ene(DBU),CH_3OH and CO_2 was synthesized and characterized.DBU/CH_3OH/CO_2 ionic compound was prepared in the presence of excess methanol,and then the excess methanol was removed by reduced pressure distillation in CO_2 atmosphere.The product yield(100%) reached the theoretical maximum for the first time.Its structure was identified by NMR,FT-IR,and XRD.The crystal product shows 8strong peaks in XRD at 2θ values of 16.0547°,16.4308°,16.7651°,18.8714°,19.2140°,21.9471°,22.0780°,and25.5661°.Its decomposition onset temperature(53 ℃) was affirmed by TGA,which is lower than its melting point.And its ionic switch point was measured by conductivity. 展开更多
关键词 DBU Switchable ionic compounds synthesis
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SYNTHESIS OF FUNCTIONAL MACROMOLECULE INTERMEDIATE THROUGH COUPLING REACTION CATALYZED BY [bmim]Cl/FeCl_3 IONIC LIQUID
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作者 CHEN Min CHEN Xiaonong +4 位作者 YUAN Xinhua ZHANG Yan ZHANG Chunyan LIU Hua DAI Qixun 《Chinese Journal of Reactive Polymers》 2006年第2期108-114,共7页
To obtain new functional aromatic polymer materiul. 3,3'-biacenaphthene, which is used as macromolecule intermediate of,funcrion aromatic polymer material, was synthesized through the coupling reaction of acenaphthen... To obtain new functional aromatic polymer materiul. 3,3'-biacenaphthene, which is used as macromolecule intermediate of,funcrion aromatic polymer material, was synthesized through the coupling reaction of acenaphthene catalyzing by ionic liquid ([bmim]CI/FeCl3) at mild reaction condition. Pure 3,3'-biacenaphthene was obtained hy recrystalling and column chromatography from the reaction mixture and was determined by GC/MS, SHNMR arid FTIR analysis. The influence of various reaction conditions on the yield of 3,3'-biacenaphthene were studied by GC analysis. The result shows that the optimun synthesis conditions of the coupling reaction are, as following: the molar ratio of FeCl3 to [BmimlCl being 3, the mole ratio of FeCl3 in [Bmim]Cl/FeCl3 to acenaphthene being 4. the reaction temperamre being 20 ℃ the reaction time being 4h and the solvent of the reaction system being PhNO2 Under those conditions, the yield of the 3.3'-biacenaphthene will be 48.71% and selectivity, of that will be 78.56 %. Farther more, [bmim]Cl/FeCl3 has no pollution to environments and can be reused. 展开更多
关键词 Functional macromolecule intermediate 3 3'-biacenaphthene synthesis Coupling reactions ionic liquid CATALYZE
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Investigation of the Role of Electrogenerated N-Heterocyclic Carbene in the Staudinger Synthesis in Ionic Liquid
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作者 Marta Feroci 《International Journal of Organic Chemistry》 2011年第4期191-201,共11页
Electrogenerated N-heterocyclic carbene (NHC), obtained by cathodic reduction of Bmim-BF4, behaves as organocatalyst and base in the Staudinger synthesis from an acyl chloride and a deactivated imine in ionic liquid t... Electrogenerated N-heterocyclic carbene (NHC), obtained by cathodic reduction of Bmim-BF4, behaves as organocatalyst and base in the Staudinger synthesis from an acyl chloride and a deactivated imine in ionic liquid to yield ?-lactams. The effect of many parameters (temperature, amount of electricity, substituents, presence of an external base) has been evaluated and a tentative mechanism for the Staudinger synthesis in a very polar medium like the ionic liquid reported. The yields of isolated ?-lactams are good, starting from non-electrophilic imines, and predominantly trans lactams are obtained with a good diastereomeric ratio. 展开更多
关键词 ELECTROsynthesis NHC Staudinger synthesis ?-Lactams ORGANOCATALYST ionic Liquid
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