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One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH_(3) at low temperature 被引量:1
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作者 Shuang Qiu Yonghou Xiao +3 位作者 Haoran Wu Shengnan Lu Qidong Zhao Gaohong He 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第4期193-202,共10页
NH_(3) selective catalytic reduction(SCR) has been widely recognized as a promising technique for reducing nitrogen oxides from diesel vehicle exhausts. High-efficiency SCR catalysts that could perform at low temperat... NH_(3) selective catalytic reduction(SCR) has been widely recognized as a promising technique for reducing nitrogen oxides from diesel vehicle exhausts. High-efficiency SCR catalysts that could perform at low temperatures are essential to denitration. In this work, a series of bimetallic CeCu-SAPO-34 molecular sieves were synthesized by one-step hydrothermal method. The Ce Cu-SAPO-34 maintained good crystallinity and a regular hexahedron appearance of Cu-SAPO-34 after introducing Ce species, while exhibiting a higher specific surface area and pore volume. The as-prepared CeCu-SAPO-34 with 0.02%(mass) Ce constituent exhibited the best catalytic activity below 300℃ and a maximum NO_(x) conversion of 99% was attained;the NO_(x) removal rates of more than 68% and 94% were achieved at 150℃ and 200℃, respectively. And the introduction of cerium species in Cu-SAPO-34 improves the low-temperature hydrothermal stability of the catalyst towards NH_(3)-SCR reaction. Additionally, the introduced Ce species could enhance the formation of abundant weak Br?nsted acid centers and promote the synergistic effect between CuO grains and isolated Cu^(2+) to enhance the redox cycle, which benefit the NH_(3)-SCR reaction.This work provides a facile synthesis method of high-efficiency SCR denitration catalysts towards diesel vehicles exhaust treatment under low temperature. 展开更多
关键词 CeCu-SAPO-34 Selective catalytic reduction(SCR) Low temperature DeNO_(x) one-pot synthesis
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One-pot synthesis and characterization of a new, branched polycarbosilane bearing allyl groups 被引量:12
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作者 Tian Hua Huang Zhao Ju Yu +4 位作者 Xu Min He Mu He Huang Li Fu Chen Hai Ping Xia Li Tong Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第6期754-757,共4页
A highly branched polycarbosilane bearing allyl groups has been prepared by a one-pot synthesis with chloromethyltrichlorosilane, chloromethylmethyldichlorosilane and allyl chloride as the starting materials. The resu... A highly branched polycarbosilane bearing allyl groups has been prepared by a one-pot synthesis with chloromethyltrichlorosilane, chloromethylmethyldichlorosilane and allyl chloride as the starting materials. The resultant polymer, with the approximate formula [SiH1.2(CH3)0.71(CH2CHCH2)0.09CH2]n, has been characterized by 1H, 13C, and 29Si NMR, GPC, TG and elemental analysis. It could be cross-linked thermally at 170 °C in the absence of oxygen. Pyrolysis of the polymer gave a ceramic with a yield of about 70%. 展开更多
关键词 POLYCARBOSILANE one-pot synthesis Silicon carbide precursor Ceramic precursor
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Efficient one-pot synthesis of n-butyl levulinate from carbohydrates catalyzed by Fe_2(SO_4)_3 被引量:8
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作者 Ran An Guizhuan Xu +2 位作者 Chun Chang Jing Bai Shuqi Fang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2017年第3期556-563,共8页
Butyl levulinate(BL) is a promising new candidate as diesel fuel and fuel additive. In this study, an efficient process for a one-pot synthesis of BL from biomass-derived carbohydrates in butanol medium with the cat... Butyl levulinate(BL) is a promising new candidate as diesel fuel and fuel additive. In this study, an efficient process for a one-pot synthesis of BL from biomass-derived carbohydrates in butanol medium with the catalysis of metal sulfates was developed. The catalytic activity of a series of metal sulfates for the synthesis of BL from fructose was investigated. Among various metal sulfates, ferric sulfate Fe(SO)was found to be the most efficient catalyst, which gave a remarkably high BL yield of 62.8 mol% under the conditions of 463 K, 3 h, a catalyst dosage of 5.0 g/L, and fructose concentration of 25 g/L. Different carbohydrates including glucose, cellulose, inulin and sucrose were also used for one-pot synthesis of BL with the catalysis of Fe(SO), showing the yields of 39.6, 30.5, 56.6 and 50.1 mol%, respectively. In addition,the recycling and reuse of Fe(SO)was studied by characterizing them using powder X-ray diffraction(XRD), scanning electron microscope(SEM), X-ray photoelectron spectroscopy(XPS). A plausible reaction pathway for the one-pot synthesis of BL from fructose was proposed. This study provides a facile and feasible way for the synthesis of BL from biomass. 展开更多
关键词 one-pot n-butyl levulinate Metal sulfate Carbohydrates
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One-pot synthesis of 2-aminothiazoles in PEG-400 被引量:8
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作者 Dhanaji V.Jawale Dinesh L.Lingampalle +1 位作者 Umesh R.Pratap Ramrao A.Mane 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第4期412-416,共5页
A facile one-pot synthesis of 2-aminothiazoles has been carried in PEG-400 as a greener medium at room temperature.This method avoids the use of lachrymatric a-bromoketones as well as the volatile,toxic organic solvents.
关键词 one-pot synthesis 2-Aminothiazoles Polyethylene glycol-400 N-BROMOSUCCINIMIDE
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One-pot synthesis of 1,3,4-oxadiazole-5-thioethers in water
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作者 闫旭 葛泽梅 +1 位作者 程铁明 李润涛 《Journal of Chinese Pharmaceutical Sciences》 CAS 2008年第4期277-280,共4页
An efficient and environmental-friendly one-pot procedure has been developed for the synthesis of 1,3,4-oxadiazole-5- thioethers by the reaction of acylhydrazine with carbon disulfide and organic halides or α, β-uns... An efficient and environmental-friendly one-pot procedure has been developed for the synthesis of 1,3,4-oxadiazole-5- thioethers by the reaction of acylhydrazine with carbon disulfide and organic halides or α, β-unsaturated carbonyl compounds. The reactions were carried out in water in the presence of potassium phosphate within 2-4 h to afford the expected products in excellent yields. 展开更多
关键词 1 3 4-Oxadiazole-5-thioether one-pot synthesis Environmental-friendly Aqueous medium Acylhydrazine Potassium phosphate
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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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Microwave radiation one-pot synthesis of chloropropyl-functionalized mesoporous MCM-41 被引量:3
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作者 徐彦芹 曹渊 夏之宁 《Journal of Central South University》 SCIE EI CAS 2012年第8期2130-2135,共6页
Chloropropyl-functionalized mesoporous MCM-41(MCM-41-(CH2)3Cl) was synthesized in alkaline medium by the microwave radiation one-pot method, using cetyltrimethy-lammoniumbromide (CTAB) as novel template, tetraet... Chloropropyl-functionalized mesoporous MCM-41(MCM-41-(CH2)3Cl) was synthesized in alkaline medium by the microwave radiation one-pot method, using cetyltrimethy-lammoniumbromide (CTAB) as novel template, tetraethoxysilane (TEOS) as silica source, and chloropropyltriethoxysilane (C1PTES) as the coupling agent. The microstructure of MCM-41-(CH2)3Cl was characterized by the means of X-ray diffraction (XRD), nitrogen absorption-desorption, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results show that a successful synthesis of MCM-41-(CH2)3Cl with well structure is obtained. The optimal microwave power is 120 W and the best microwave time is 50 rain. The dosage of chloropropyltriethoxysilane on the structure of chloropropyl-functionalzed MCM-41 was also investigated. It is found that the chloropropyltriethoxysilane volume between 0.8 mL and 1.6 mL is favorable for the formation of highly ordered MCM-41-(CH2)3Cl mesostructure. 展开更多
关键词 MICROWAVE one-pot synthesis chloropropyl MODIFICATION MCM-41
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One-pot cascade conversion of xylose to furfuryl alcohol over a bifunctional Cu/SBA-15-SO3H catalyst 被引量:3
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作者 Tianyu Deng Guangyue Xu Yao Fu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第3期404-414,共11页
The conversion of hemicellulose-derived xylose to furfuryl alcohol is a practical procedure for producing value-added chemicals from biomass.In this study,a bifunctional Cu/SBA-15-SO3 H catalyst was employed for the o... The conversion of hemicellulose-derived xylose to furfuryl alcohol is a practical procedure for producing value-added chemicals from biomass.In this study,a bifunctional Cu/SBA-15-SO3 H catalyst was employed for the one-pot catalytic conversion of xylose to furfuryl alcohol with a yield of up to 62.6% at the optimized conditions of 140℃,4 MPa,and for 6 h in a biphasic water/n-butanol solvent.A high reaction temperature resulted in further hydrogenation to 2-methyl furan,while a high hydrogen pressure led to a side hydrogenation reaction to xylitol.The biphasic solvent allowed xylose solvation as well as furfuryl product extraction.The acidic-SO3 H sites and Cu sites co-existed,maintained a balance,and cooperatively catalyzed the cascade conversion.Excessive acidic sites and large pores could promote the xylose conversion,although a low furfuryl alcohol yield was obtained.This catalytic system could be potentially applied to the one-pot synthesis of furfuryl alcohol from hemicellulose-derived xylose. 展开更多
关键词 BIOMASS Furfuryl alcohol Heterogeneous catalysis one-pot synthesis XYLOSE
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Improved One-pot Synthesis of 4,6-Dihydroxyisophthalic Acid and 2,3-Dihydroxyterephthalic Acid 被引量:3
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作者 Guang Dong LEI Li Xin LI +1 位作者 Zhi Yun LU Ming Gui XIE 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第8期1039-1042,共4页
An improved method for the large-scale preparation of 4,6-dihydroxyisophthalic acid and 2,3-dihydroxyterephthalic acid has been developed.Compared to the previous procedures,this new process-requires much lower CO2 pr... An improved method for the large-scale preparation of 4,6-dihydroxyisophthalic acid and 2,3-dihydroxyterephthalic acid has been developed.Compared to the previous procedures,this new process-requires much lower CO2 pressure of 0.3 Mpa and shorter reaction time.thus providing a convenient access for large-scale synthesis.The yield is high (93% and 65%,respectively), and the oxidation of phenol is nearly inhibited,neither decolorization nor further chromatographic purification is required. 展开更多
关键词 one-pot LARGE-SCALE 4 6-dihydroxyisophthalic acid 2 3-dihydroxyterephthalic acid.
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Ultrasound-assisted one-pot synthesis of 2,4,5-triarylimidazole derivatives catalyzed by ceric (Ⅳ) ammonium nitrate in aqueous media 被引量:3
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作者 K.F.Shelke S.B.Sapkal M.S.Shingare 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第3期283-287,共5页
2,4,5-Triarylimidazoles could be obtained in excellent yields by the one-pot three-component condensation of benzil/benzoin, aldehydes and ammonium acetate in the presence of catalytic amount of the inexpensive, readi... 2,4,5-Triarylimidazoles could be obtained in excellent yields by the one-pot three-component condensation of benzil/benzoin, aldehydes and ammonium acetate in the presence of catalytic amount of the inexpensive, readily available and non-toxic ceric (IV) ammonium nitrate (CAN) in aqueous media under ultrasound at room temperature. In this reaction the products were obtained in short reaction time and easy operation under mild conditions. 展开更多
关键词 2 4 5-Triarylimidazole one-pot Ceric (IV) ammonium nitrate Aqueous media ULTRASOUND
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Efficient one-pot synthesis of 1,3-diaryl-3H-benzo[f]chromenes using ferric hydrogensulfate 被引量:4
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作者 Hossein Eshghi Gholam Hossein Zohuri +1 位作者 Saman Damavandi Mohammad Vakili 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第12期1423-1426,共4页
An efficient and easy method for one-pot three-component synthesis of l,3-disubstituted-3H-benzo[f]chromenes by the condensation of naphtol,aromatic aldehyde derivatives and phenylacetylene in the presence of ferric h... An efficient and easy method for one-pot three-component synthesis of l,3-disubstituted-3H-benzo[f]chromenes by the condensation of naphtol,aromatic aldehyde derivatives and phenylacetylene in the presence of ferric hydrogensulfate[Fe(HSO4)3], has been described.The catalyst displayed high activity which afforded the corresponding 1,3-disubstituted-3H-benzo[f]chromenes in satisfying yields.Alkyl-substituted phenols were examined and the corresponding benzopyran derivatives were synthesized in moderate yields.Heterogeneous nature of the using catalyst made it reusable for further chemical reactions. 展开更多
关键词 1 3-Disubstituted-3H-benzo[f]chromenes Ferric hydrogensulfate one-pot synthesis Naphtopyran BENZOPYRAN
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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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One-pot synthesis of network supported catalyst using supramolecular gel as template 被引量:2
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作者 Yong Liang Li Ming Tang Yu Xia Kai Chen Bo Tian Li Xin Jin 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第8期991-994,共4页
A simple and general strategy is described for preparing network supported catalyst through a one-pot synthetic procedure using supramolecular gel as template.This procedure directly attaches ligand to support during ... A simple and general strategy is described for preparing network supported catalyst through a one-pot synthetic procedure using supramolecular gel as template.This procedure directly attaches ligand to support during fabricating the support.Using this strategy,supported CuBr/di-(2-picolyl) amine catalyst with U-shaped fibrillar network was prepared and used in atom transfer radical polymerization of methyl methacrylate.XPS and SEM characterization of the catalyst revealed homogeneous distribution of ligand,sufficient reactive sites,adequate mechanical strength and macroporosity.The polymerization results demonstrated high activity and reusability of such catalyst.This strategy might be extended to other supported catalysts used in column reactors. 展开更多
关键词 one-pot synthesis Network supported catalyst Supramolecular gel Atom transfer radical polymerization
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Strontium chloride-catalyzed one-pot synthesis of 4(3H)-quinazolinones under solvent-free conditions 被引量:2
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作者 Min Wang Zhi Guo Song Ting Ting Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第10期1167-1170,共4页
Strontium chloride was used as an efficient and recyclable catalyst in one-pot condensation of anthranilic acid, ortho esters and amines leading to the formation of 4(3H)-quinazolinone derivatives in good yields at ... Strontium chloride was used as an efficient and recyclable catalyst in one-pot condensation of anthranilic acid, ortho esters and amines leading to the formation of 4(3H)-quinazolinone derivatives in good yields at room temperature under solvent-free conditions. 展开更多
关键词 4(3H)-Quinazolinones one-pot synthesis Solvent-free conditions Strontium chloride
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A new one-pot neat synthesis of 1,2,4-triazol-3-ones through 4-(N,N-dimethylamino) pyridine (DMAP) catalyzed cyclocondensation of ethyl carbazate with aryl nitriles 被引量:1
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作者 A.Davoodnia M.Bakavoli +1 位作者 M.Soleimany H.Behmadi 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第6期685-688,共4页
A new one-pot neat synthesis of some 5-aryl-2,4-dihydro-3H- 1,2,4-triazol-3-ones through cyclocondensation of ethyl carbazate with aryl nitriles catalyzed by DMAP as an efficient and basic nucleophilic catalyst is des... A new one-pot neat synthesis of some 5-aryl-2,4-dihydro-3H- 1,2,4-triazol-3-ones through cyclocondensation of ethyl carbazate with aryl nitriles catalyzed by DMAP as an efficient and basic nucleophilic catalyst is described. 展开更多
关键词 1 2 4-Triazol-3-ones one-pot synthesis DMAP Aryl nitriles
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One-pot synthesis of 2,5-disubstituted-1,3,4-thiadiazoles under ultrasonic irradiation 被引量:1
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作者 Ying Jun Li Ya Zhen Sun +4 位作者 Yong Ting Xu Kun Jin Li Ping Wen Ni Bo Hou Xiao Xiao Sun 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第9期1047-1048,共2页
A facile one-pot synthesis of 2,5-disubstituted-1,3,4-thiadiazoles was achieved by ultrasonic irradiation of a mixture of 1-naphthylacetyl chloride, NH4CNS, CH2Cl2 and PEG-400 for 1.5 h at 10–20 °C and subsequen... A facile one-pot synthesis of 2,5-disubstituted-1,3,4-thiadiazoles was achieved by ultrasonic irradiation of a mixture of 1-naphthylacetyl chloride, NH4CNS, CH2Cl2 and PEG-400 for 1.5 h at 10–20 °C and subsequent irradiation for 1.5 h in the presence of N-arylglycine hydrazides. This method requires short time and gives thiadiazoles in high yields. 展开更多
关键词 one-pot Ultrasonic irradiation 2 5-Disubstituted-1 3 4-thiadiazoles SYNTHESIS
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Synthesis of Substituted u-Oxo-bis[tetra-phenyl porphyrinatoiron] Compounds from Free Base Porphyrins by a One-pot Method 被引量:2
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作者 佘远斌 冯连顺 +1 位作者 王爱欣 李修艳 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2008年第3期369-372,共4页
A novel method for synthesis of substituted u-oxo-bis[tetraphenyl porphyrinatoiron] compotmds ([TRPPFe]20) based on the reaction among free base porphyrins (TRPPH2), FeSO4·7H2O and H2O in one pot was proposed... A novel method for synthesis of substituted u-oxo-bis[tetraphenyl porphyrinatoiron] compotmds ([TRPPFe]20) based on the reaction among free base porphyrins (TRPPH2), FeSO4·7H2O and H2O in one pot was proposed and investigated. Four kinds of [TRPPFe]2O were synthesized by this novel synthetic method, and their structures were characterized by elemental analysis, infrared spectra and UV-vis spectroscopy. The reaction conditions, including the effect of different iron salts on the formation of [TRPPFe]2O, the reaction time between FeSO4-7H2O and TRPPH2, the molar ratio of FeSO4-7H2O/TRPPH2 as well as the volume ratio of H2O/DMF, were investigated. The [TRPPFe]2O yield of 93% 98% could be obtained under the following optimal conditions: the reaction time of FeSOn-7H2O with TRPPH2 was about 10 h, the molar ratio of FeSOn-7H2O/TRPPH2 about 5 : 1, and the volume ratio of H2O/DMF exceeded 2 : 1. Further research indicated that only TRPPFeCI were formed once FeSOn-7H2O was replaced by FeCl2-4H2O, the reason of which might be that halogen ions in iron salts interfered the formation of [TRPPFe]2O, suggesting that halogen ions should be avoided in this novel synthetic method. 展开更多
关键词 substituted u-oxo-bis[tetraphenylporphyrinatoiron] compounds one-pot method free base porphyrins
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One-pot synthesis of 5-hydroxymethylfurfural from glucose over zirconium doped mesoporous KIT-6 被引量:1
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作者 Chongwen Jiang Jundong Zhu +2 位作者 Bing Wang Lu Li Hong Zhong 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第6期1270-1277,共8页
Zirconium doped mesoporous KIT-6 samples with different Si/Zr ratios were synthesized by the direct hydrothermal method.Various characterization techniques confirm that highly distributed ZrO_2 nanoparticles and multi... Zirconium doped mesoporous KIT-6 samples with different Si/Zr ratios were synthesized by the direct hydrothermal method.Various characterization techniques confirm that highly distributed ZrO_2 nanoparticles and multicoordinated Zr^(4+) species are incorporated in the mesoporous composites.One-pot synthesis of 5-hydroxymethylfurfura(HMF) from glucose was examined in the presence of Zr-KIT-6(20) the molar ratio of Si to Zr is 20 under aqueous system.The effects of temperature,reaction time,catalyst dosage and biphasic solvent system on the conversion of glucose and the HMF yield were investigated.It was found that the glucose conversion and the HMF yield have been improved from 54.8% to 79.0% and from 19.5% to 34.5% in the biphasic MIBK-water system,respectively.Both the acidity of Zr-KIT-6(20) and the biphasic MIBK-water system are responsible for the improved performance of glucose dehydration to HMF. 展开更多
关键词 GLUCOSE one-pot Dehydration 5-HMF Hydrothermal Mesoporous KIT-6
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One-pot synthesis of(Z)-4-(2-bromovinyl)benezenesulfonamides by microwave-induced simultaneous debrominative decarboxylation and sulfamation of anti-2,3-dibromo-3-(4-chlorosulfonylphenyl)propanoic acid 被引量:1
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作者 Wen Sheng Zhang Chun Xiang Kuang Qing Yang 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第1期48-51,共4页
One-pot simultaneous debrominative decarboxylation and sulfamation of anti-2,3-dibromo-3-(4-chlorosulfonylphenyl)propa- noic acid in DMF (for alkyl amines) or DMF-pyridine (for aryl amines) using a diverse range... One-pot simultaneous debrominative decarboxylation and sulfamation of anti-2,3-dibromo-3-(4-chlorosulfonylphenyl)propa- noic acid in DMF (for alkyl amines) or DMF-pyridine (for aryl amines) using a diverse range of alkyl and aryl amines under microwave irradiation condition stereoselectively afforded (Z)-4-(2-bromovinyl)benzenesulfonamides in good yields. 展开更多
关键词 one-pot Arylsulfonamide (Z)-Arylvinyl bromide Amine Microwave irradiation
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Solar thermochemical reactionsⅢ:A convenient one-pot synthesis of 1,2,4,5-tetrasubstituted imidazoles catalyzed by high surface area SiO_2 and induced by solar thermal energy 被引量:1
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作者 Ramadan A.Mekheimer Afaf M.Abdel Hameed +1 位作者 Seham A.A.Mansour Kamal Usef Sadek 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第7期812-814,共3页
A simple, convenient and efficient method for the synthesis of 1,2,4,5-tetrasubstituted imidazole derivatives using benzoin, an aromatic aldehyde, an aromatic amine in the presence of ammonium acetate catalyzed by hig... A simple, convenient and efficient method for the synthesis of 1,2,4,5-tetrasubstituted imidazole derivatives using benzoin, an aromatic aldehyde, an aromatic amine in the presence of ammonium acetate catalyzed by high surface area SiO2 and induced by free solar thermal energy was reported. C 2009 Kamal User Sadek. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 展开更多
关键词 one-pot synthesis SiO2 Solar thermal energy Tetrasubstituted imidazole
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