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THE REACTION OF BENZOYL SUBSTITUTED HETEROCYCLIC KETENE AMINALS WITH ARYL AZIDES.A FACILE APPROACH TO SYNTHSIZE 1,5-DIARYL-4-(2-IMIDAZOLINYL)-1,2,3-TRIAZOLES 被引量:3
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作者 Zhi Tang HUANG Mei Xiang WANG Institute of Chemistry,Academia Sinica,Beijing,PR of China 《Chinese Chemical Letters》 SCIE CAS CSCD 1990年第1期5-8,共4页
Heterocyclic ketene aminals 1 react with aryl azides 2 to give the titled compounds 3,and in some cases also with the formation of fused heterocycles 4.
关键词 IMIDAZOLINYL THE reaction OF BENZOYL substituted HETEROCYCLIC KETENE AMINALS WITH ARYL AZIDES.A FACILE APPROACH TO SYNTHSIZE 1 5-DIARYL-4 TRIAZOLES
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STUDIES ON THE WITTIG REACTION(XIII): KINETICS OF THE PTC-WITTIG REACTIONS OF 2-BUTENYL METHYL-DIPHENYLPHOSPHONIUM SALT WITH SUBSTITUTED BEN2ALDEHYDES 被引量:1
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作者 Wen Fang HUANG Ming Wu DING +1 位作者 Wen Jing XIAO Tian Jie WU Institute of Organic Sgnthesis, Central China Normal University, Wuhan 430O70 Center of Analysis and Testing, Central China Normal University, Wuhan 430070 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第6期411-414,共4页
The kinetics of PTC-Wittig reaction between substituted aromatic aldehydes and 2-butenyl methyldiphenylphosphonium salt has been studied. The low reaction constant (ρ=0. 30) implies that these PTC-Wittig reactions ta... The kinetics of PTC-Wittig reaction between substituted aromatic aldehydes and 2-butenyl methyldiphenylphosphonium salt has been studied. The low reaction constant (ρ=0. 30) implies that these PTC-Wittig reactions take place through low polar intermediate. 展开更多
关键词 PTC XIII KINETICS OF THE PTC-WITTIG reactionS OF 2-BUTENYL METHYL-DIPHENYLPHOSPHONIUM SALT WITH substituted BEN2ALDEHYDES STUDIES ON THE WITTIG reaction
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THE REACTION OF SUBSTITUTED PHENOXY ACETYL CHLORIDE WITH TRIMETHYL PHOSPHITE
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作者 Ru Yu CHEN Hui Ying LI Bao Zhong CAI 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第5期403-406,共4页
Substituted phenoxy acetyl chloride reacted with trimethyl phosphite to form an unexpected substituted phenoxy acetic acid ester, confirmed by ~1HNMR, IR and MS. The mechanism suggested is different from that of Arbuz... Substituted phenoxy acetyl chloride reacted with trimethyl phosphite to form an unexpected substituted phenoxy acetic acid ester, confirmed by ~1HNMR, IR and MS. The mechanism suggested is different from that of Arbuzov reaction. 展开更多
关键词 THE reaction OF substituted PHENOXY ACETYL CHLORIDE WITH TRIMETHYL PHOSPHITE PPM CI OCH
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SYNTHESIS OF POLYSUBSTITUTED AROMATIC COMPOUNDS:Ⅰ.THE DIELS-ALDER REACTION OF SELENO SUBSTITUTED 3-SULFOLENES WITH DIMETHYL ACETYLENEDICARBOXYLATE
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作者 Guang Dian HAN Guo Feng HUANG Institute of Materia Medica,Chinese Academy of Medical Sciences and Peking Union Medical College.Beijing 100050 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第10期871-872,共2页
The seleno substituted aromatic compounds were prepared via the Diels-Alder reaction of seleno substituted 3-sulfolenes with dimethyl acetylenedicarboxylate followed by DDQ dehydrogenation.
关键词 TMS HNMR SYNTHESIS OF POLYsubstituted AROMATIC COMPOUNDS THE DIELS-ALDER reaction OF SELENO substituted 3-SULFOLENES WITH DIMETHYL ACETYLENEDICARBOXYLATE OCH PPM
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INVESTIGATION ON THE NEW SYNTHETIC REACTIONS AND MECHANISMS OF SUBSTITUTED DIPHENYL ETHEPS
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作者 Zhi Qiang ZHANG Shu Mei LIU Zheng Hua TIAN Anshan Institute of Iron & Steel Technology,Anshan 114002 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第9期687-688,共2页
In the presence of alkali nitrite and carbonate,some nitrobenzenes subs- tituted by strongly electron withdrawing group undergo a self condensation in an aprotic polar sotvent to give symmetrical disubstituted dipheny... In the presence of alkali nitrite and carbonate,some nitrobenzenes subs- tituted by strongly electron withdrawing group undergo a self condensation in an aprotic polar sotvent to give symmetrical disubstituted diphenyl ethers in good yields.A possible mechanism is discussed,the nucteophilic aromatic substitution S_NAr and S_(Ru)Ar may occur simultaneously. 展开更多
关键词 NC INVESTIGATION ON THE NEW SYNTHETIC reactionS AND MECHANISMS OF substituted DIPHENYL ETHEPS
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MHEORETICAL STUDIES ON THE REACTION MECHANISMS OF CYCLOADDITION REACTIONS BETWEEN KETENE OR SUBSTITUTED KETENES AND CYCLOPENTADIENE
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作者 Jian JIANG De Cai FANG Xiao Yuan FU Chemistry Department,Beijing Normal University,Beijing 100875 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第9期713-714,共2页
The cycloaddition reactions between ketene or substituted ketenes and cyelopentadiene have been studied theoretically by means of the semiempirical AMI method.Three different substituted ketenes have been selected and... The cycloaddition reactions between ketene or substituted ketenes and cyelopentadiene have been studied theoretically by means of the semiempirical AMI method.Three different substituted ketenes have been selected and ten transition states,corresponding to different approach geometries have been located and characterized,The regioselectivity and stereoselectivity of the reactions are correctly predicted by the calculations and the reaction mechanisms are analyzed in terms of electronic and steric effects of the substitutents on the reacting ketene and cyc-lopentadiene. 展开更多
关键词 MHEORETICAL STUDIES ON THE reaction MECHANISMS OF CYCLOADDITION reactionS BETWEEN KETENE OR substituted KETENES AND CYCLOPENTADIENE
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Substitution Reactions by Azide and Thiocyanide Anions in Room Temperature Ionic Liquids 被引量:2
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作者 Yu Xia LI Wei Liang BAO Zhi Ming WANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2003年第3期239-242,共4页
Conducted in the ionic liquids, activated and inactivated halides, acyl chlorides, tosylate, and bezotriazolyl acylates were converted to corresponding azide and thiocyanide compounds in high yields under mild conditi... Conducted in the ionic liquids, activated and inactivated halides, acyl chlorides, tosylate, and bezotriazolyl acylates were converted to corresponding azide and thiocyanide compounds in high yields under mild conditions. 展开更多
关键词 Room temperature ionic liquids AZIDE thiocyanide substitution reactions.
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α-Oxoketene Cyclic S, S-cetals Chemistry-Substitution Reaction of α,α'-Dicinnamoyl Ketene Cyclic S, S-Acetals with Ethylenediamine 被引量:2
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作者 Mei Xin ZHAO Qun LIU +4 位作者 Fu Shun LIANG Jing Fu LIU Bao Zhong ZHAO LianZhong LI (Department of Chemistry, Northeast Normal University, Changchun, 130024)(Department of Chemistry, Jilin Teacher college, Jilin, 131000) 《Chinese Chemical Letters》 SCIE CAS CSCD 1998年第3期231-232,共2页
α,α'-Dicinnamoyl ketene cyclic S, S-acetals 4 were reacted with ethylenediamine to afford α,α'-dicinnamoyl ketene cyclic N,N-acetals 5. This process provides a new method for thesynthesis of 5 in high yiel... α,α'-Dicinnamoyl ketene cyclic S, S-acetals 4 were reacted with ethylenediamine to afford α,α'-dicinnamoyl ketene cyclic N,N-acetals 5. This process provides a new method for thesynthesis of 5 in high yield under mild conditions. 展开更多
关键词 α α'-dicinnamoyl ketene cyclic S S-acetals ETHYLENEDIAMINE substitution reaction α α'-dicinnamoyl ketene cyclic N N-acetals
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THE RADICAL NUCLEOPHILIC SUBSTITUTION REACTION OF HETEROCYCLIC KETENE AMINALS WITH 2,4-DINITROHALOBENZENES
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作者 Wen Yi ZHAO Zhi Tang HUANG Institute of Chemistry,Academia Sinica Beijing,100080 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第7期501-504,共4页
The anion of heterocyclic ketene aminals reacted with 2,4-dini- tro-halobenzenes to give an arylated product through the radical nucleo- philic substitution confirmed by ESR spectroscopy,ESR-spin trapping techni- que,... The anion of heterocyclic ketene aminals reacted with 2,4-dini- tro-halobenzenes to give an arylated product through the radical nucleo- philic substitution confirmed by ESR spectroscopy,ESR-spin trapping techni- que,and depression of the reaction rate by the addition of inhibitor. 展开更多
关键词 CO ESR NH THE RADICAL NUCLEOPHILIC SUBSTITUTION reaction OF HETEROCYCLIC KETENE AMINALS WITH 2 4-DINITROHALOBENZENES
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Kinetic Studies on Ligand Substitution Reactions of Metallothioneins with DTPA and EDTA
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作者 Li Rongchang, Gao Fei and Wang Kui (Department of Inorganic Chemistry, Beijmg Medical University, Beijing) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1990年第1期67-72,共6页
Cd, Zn-thionelns were isolated from the rat liver by improved Winge method and purified further. The composition was determined. The mobilization of Cd ions from the Cd, Zn-metallothioneins was studied with spectropho... Cd, Zn-thionelns were isolated from the rat liver by improved Winge method and purified further. The composition was determined. The mobilization of Cd ions from the Cd, Zn-metallothioneins was studied with spectrophotometric method. The results show that the reaction of DTP A or EDTA with Cd, Zn-thioneins occurs through three steps. The first step follows pseudo-first order reaction with association mechanism. The formation constants and the dissociation rate constants of the relevant intermediate ternary complexes and apparent rate constants, Kapp were determined. The properties and structure of Cd, Zn-thioneins and ligands with low molecular weights affect the values of Kapp. 展开更多
关键词 METALLOTHIONEIN Substitution reactions KINETICS
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Research on Reactivities of Mo Cluster. A Selective Substitution Reaction of the Bridging (dtp) Ligand and Structure of Tetranuclear Molybdenum Cluster Compound [Mo_4S_4(μ-O_2CC_6H_5)_2(dtp)_4]
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作者 庄鸿辉 吴鼎铭 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1995年第4期245-249,共5页
The cluster compound [Mo4S4 (μ-O2CC6H5)2(dtp)4] (dtp = S2P (OEt)2)was obtained by the ligand substitution reaction of tetranuclear molybdenum cluster [Mo4S4(μ-dtp)2(dtp)4] in the mixed solvent of acetone, ethanol an... The cluster compound [Mo4S4 (μ-O2CC6H5)2(dtp)4] (dtp = S2P (OEt)2)was obtained by the ligand substitution reaction of tetranuclear molybdenum cluster [Mo4S4(μ-dtp)2(dtp)4] in the mixed solvent of acetone, ethanol and water in the presence of C6H5CO2Na. It is monoclinic and crystallizesin space group C2/c, Mr =1495. 09, a=12. 175 (5) , b=22. 01 (1) , c=20.875(9) ,β=99. 04(4)°; V=5570(5) ; Z=4; Dc= 1. 78g/cm3;μ(MoKα) = 14. 52 cm-1; F(000) =2984. Final R factor is 0. 066. The result reveals that the [Mo4S4] cluster core and t-(dtp)1ligands are retained and onlyμ-bridged (dtp)1- ligands are substituted by (C6H5CO2)1in the substitution reaction, thus producing the title cluster compound,the structure of which contains two species of bidentate ligand. 展开更多
关键词 substitution reaction Mo cluster crystal structure
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Synthesis and Crystal Structure of FeCo_2(CO)_8(μ_3-S)〔P(OCH_2Ph)_3〕 被引量:1
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作者 WANG Xiao-Ling SUO Quan-Ling +1 位作者 WANG Yi-Bing LU Qing-Wei(Department of Chemical Engineering, Inner Mongolia Polytechnic University, Hohhot, 010062)SUN Jie(Shanghai Institute of Organic Chemistry, the Chinese Academyof Sciences, Shanghai, 200032) 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1998年第2期97-100,共4页
The title compound FeCo2 (CO)8 (μ3-S) [P (OCH2Ph )3] was synthe-sized by the reaction of P (OCH2Ph)3 with FeCo2 (CO)9 (μ3-S) at room temperature.Crystal data: C29H21 O11 PSCo2Fe, Mr=782. 23, monoclinic, space group ... The title compound FeCo2 (CO)8 (μ3-S) [P (OCH2Ph )3] was synthe-sized by the reaction of P (OCH2Ph)3 with FeCo2 (CO)9 (μ3-S) at room temperature.Crystal data: C29H21 O11 PSCo2Fe, Mr=782. 23, monoclinic, space group P21/n(14), a= l5. 123(4), b=14. 580(4), c=15. 942(3)A, g=115. 66(1), V=3168293K, final R= 0. 032, R= 0. 037 for 3010 observed reflections with I>3. 00(I).The monosubstituted ligand P (OCH2Ph )3 in FeCo2 (CO)8 (μ3-S ) [P (OCH2Ph )3] islinked to one cobalt atom of the tetrahedron FeCo2S framework. 展开更多
关键词 SYNTHESIS crystal structure iron-cobalt cluster substituted reaction
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Synthesis and Crystal Structure of an Incomplete Cubane-type Mo_3S_4 Cluster with the N-N-O Type Tridentate Ligand: {Mo_3S_4[NH_2CH_2CH(O)CH_2NH_2]_3}(DTP)·(H_2O)_2·(DMF) 被引量:1
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作者 HURui-Feng QINYe-Yan KANGYao ZHANGJian WENYi-Hang LIZhao-Ji CHENJiu-Tong YAOYuan-Gen 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第7期751-754,735,共5页
A new cluster {Mo3S4[NH2CH2CH(O)CH2NH2]3}(DTP)?(H2O)2?(DMF) (DTP = diethyldithiophosphate) has been synthesized via ligand substitution reaction of Mo3S4(DTP)4(H2O) with an alkaline ligand 1,3-diamino-2-propanol(DAPRO... A new cluster {Mo3S4[NH2CH2CH(O)CH2NH2]3}(DTP)?(H2O)2?(DMF) (DTP = diethyldithiophosphate) has been synthesized via ligand substitution reaction of Mo3S4(DTP)4(H2O) with an alkaline ligand 1,3-diamino-2-propanol(DAPROH) in a mixed organic solvent, and its crys- tal structure was determined with the following data: Mo3S6PC16H48O8N7, Mr = 977.76, triclinic, space group P1, Z = 2, a = 10.319(2), b = 12.843(3), c = 15.335(3) ?, α = 65.26(3), β = 82.18(3), γ = 70.67(3)o, V = 1741.7(6) ?3, Dc = 1.864 g/cm3, μ = 1.517 mm-1, F(000) = 988, the final R = 0.0794 and wR = 0.2111 for 6318 observed reflections (I>2σ(I)). The structure analysis indicates that all DTP ligands of Mo3S4(DTP)4(H2O) are replaced and each DAPRO molecule acts as a tri- dentate ligand chelating to each Mo atom of the Mo3S4 core. Different from the precursor, the clus- ter symmetry is elevated to C3. In addition, the UV-spectrum of the title compound was measured. 展开更多
关键词 molybdenum-sulfur cluster crystal structure alkaline ligand ligand substitution reaction
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STRUCTURE AND PROPERTIES OF PHOSPHROUS-CONTAINING POLY(ARYLETHER KETONE)WITH BISPHENOL-A MOIETY 被引量:1
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作者 Kai-jun Li Xiao-ting Chen Hao Sun Xu-dong Tang 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2007年第6期651-655,共5页
A phosphrous-containing poly(aryl ether ketone) was synthesized derived from bisphenol-A and bis[4-(4- fluorobenzoyl)phenyl] phenyl phosphine oxide (FPPPO) by nucleophilic substitution reaction. The structure of... A phosphrous-containing poly(aryl ether ketone) was synthesized derived from bisphenol-A and bis[4-(4- fluorobenzoyl)phenyl] phenyl phosphine oxide (FPPPO) by nucleophilic substitution reaction. The structure of the polymer was characterized by FT-IR, ^1H-NMR and ^31p-NMR. The thermal property of the PAEK was measured by DSC and TGA. The glass transition temperature (Tg) of the polymer was 205℃, and the 5% weight loss temperature under nitrogen was 475℃. Good solubility of the polymer in organic solvents, such as N-methylpyrrolidone, dimethylformamide, dimethylacetamide, dimethylsulfoxide and chloroalkanes was observed, flexible film was obtained from the polymer's CH2Cl2 solution. The limiting oxygen index (LOI) of the PAEK was 40, which indicated that organic phosphorus moiety can offer good flame retardant property to the polymer. 展开更多
关键词 Poly(aryl ether ketone) Bis[4-(4-fluorobenzoyl)phenyl] phenyl phosphine oxide (FPPPO) Nucleophilic substitution reaction Bisphenol-A.
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Theoretical study on the isomerization reaction of fluorine substituted disilene
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作者 JU,Guan-Zhi MA,Wan-Yong Theoretical Institute of Chemistry,Shandong University,Jinan 250100CHRISTOFFEL,Kurt Chemistry Department,Augustana College,Rock Island IL 61201,USA 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1990年第3期193-198,共2页
For the isomerization reaction of monofluoro-disilene,the geometrical structures of reac- tant,product and transition state have been optimized and energy constant,vibrational frequency calculated.By means of the stat... For the isomerization reaction of monofluoro-disilene,the geometrical structures of reac- tant,product and transition state have been optimized and energy constant,vibrational frequency calculated.By means of the statistical thermodynamics and Eyring's transition state theory,the equilibrium constant,rate constant and heat of isomerization have also been computed.Hence, this reaction has been analysed completely. 展开更多
关键词 Theoretical study on the isomerization reaction of fluorine substituted disilene
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Analysis of the linkage positions and isomers of monosaccharide units in oligosaccharides by negative secondary ion mass spectrometry in combination with the stereoselective reaction with substituted boronic acid
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作者 YAN,Lin FANG,Yi-Wei Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1993年第1期53-58,共8页
The negative secondary ion mass spectrometry,in combination with the stereoselective derivatizations with substituted boronic acid RB(OH)_2,was used in the analysis of fourteen oligosac- charides.The mass spectra of t... The negative secondary ion mass spectrometry,in combination with the stereoselective derivatizations with substituted boronic acid RB(OH)_2,was used in the analysis of fourteen oligosac- charides.The mass spectra of the derivatives provide information on their linkage Positions and iso- merism of the individual monoscaccharide units.The results indicated that among the derivatives of the oligosaccharides analyzed,those with 1—4 and 1—6 linkages all presented the ion peaks at m/z 287,sometimes one more peak at m/z 449.Furthermore,a relationship was found between the linkage positions and the intensity orders of the derivative ions.Finally,the derivatives of the disaccharides with a galactose presented an intense ion peak at m/z 347,and those of oligosaccharides with 1—6 linkage to a galactose at terminal presented the ion at m/z 317.In the case of oligosaccharides with a fructose residue,characteristic ion of m/z 155 was produced.The conditions of stereoselective derivatizations and mass spectrometry were studied,in order to obtain a better reproducibility of the mass spectra. 展开更多
关键词 Analysis of the linkage positions and isomers of monosaccharide units in oligosaccharides by negative secondary ion mass spectrometry in combination with the stereoselective reaction with substituted boronic acid acid
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Preparation of phenyl substituted propargylic alcohol dicobalt hexacarbonyls and their reactions with active methylene compounds in the presence of acid
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作者 SUN,Shou-Heng CHEN,Wei-Bing +3 位作者 ZHANG,Wen-Wei LI,Dong-Wen MENG,Qing-Jin YOU,Xiao-Zeng Coordination Chemistry Institute,Nanjing University,Nanjing 210008 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1992年第1期20-25,共0页
Eight new complexes with the formula [PhC_2C(OH)R^2R^2]Co_2(CO)_6 were prepared from phenyl substituted propargylic alcohols and dicobalt octacarbonyl.The reactions of these propargylio alcohol complexes with active m... Eight new complexes with the formula [PhC_2C(OH)R^2R^2]Co_2(CO)_6 were prepared from phenyl substituted propargylic alcohols and dicobalt octacarbonyl.The reactions of these propargylio alcohol complexes with active methylene compounds,2,4-pentanedione or ethyl acetoacetate,in the presnce of an acid,HBF_4(40%)+P_2O_5(in excess)or BF_3·Et_2O,at room temperature in dichlorome- thane were investigated.From the 1-alkyl substituted tertiary propargylic alcohol complexes,three new conjugated ene-yne complexes produced by intramolecular dehydration reaction were isolated in high yields(82—95%).On the other hand,four new alkylated complexes were obtained with satisfactory yields(44—66%)from the secondary propargylic alcohol complexes.The influence of other acids,phosphorus pentoxide and polyphosphoric acid,on both dehydration reaction and alkylated reaction was also studied. 展开更多
关键词 Preparation of phenyl substituted propargylic alcohol dicobalt hexacarbonyls and their reactions with active methylene compounds in the presence of acid ACID
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SYNTHESIS AND APPLICATIONS OF CROSS-LINKED POLY(DIALLYLDIMETHYL AMMONIUM CHLORIDE) AND ITS DERIVATIVE COPOLYMERS AS EFFICIENT PHASE TRANSFER CATALYST FOR NUCLEOPHILIC SUBSTITUTION REACTIONS 被引量:11
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作者 Hossein Mahdavi Mahdi Mahmoudian 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2011年第2期165-172,共8页
Cross-linked poly(diallyldimethylammonium chloride) and its derivative copolymers were synthesized and used as phase transfer catalyst in the nucleophilic substitution reaction especially halogen exchange reactions.... Cross-linked poly(diallyldimethylammonium chloride) and its derivative copolymers were synthesized and used as phase transfer catalyst in the nucleophilic substitution reaction especially halogen exchange reactions.In addition,the effect of hydrophilic-hydrophobic character of the polymers in the nucleophilic reactions was investigated. 展开更多
关键词 Poly(diallyldimethylammonium chloride) Phase transfer catalyst Nucleophilic substitution reaction Halogen exchange reaction
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Studies on the Activities of Electrophilic Sites on Benzene Ring of 4-Substituted Anilines and Their Acyl Compounds with Multiphilicity Descriptor 被引量:5
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作者 SHEN Xizhou HE Huajun +3 位作者 YANG Bowen ZHAO Zhigang SHAO Kaiyuan HU Wenxiang 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2017年第5期773-778,共6页
In this paper, the activities of electrophilic sites on benzene ring of 4-substituted anilines and their acyl compounds were studied with the quantitative indicator of multiphilicity descriptor. Four substituents were... In this paper, the activities of electrophilic sites on benzene ring of 4-substituted anilines and their acyl compounds were studied with the quantitative indicator of multiphilicity descriptor. Four substituents were synthe- sized with microwave irradiation in good yields to verify the quantitative analysis data. Friedel-Crafts acylation was carried out by the microwave method for the first time. 展开更多
关键词 Quantum chemical calculation Electrophilic site Multiphilicity descriptor BENZODIAZEPINE Electrophilic substitution reaction
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Towards the gemini cation anion exchange membranes by nucleophilic substitution reaction 被引量:5
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作者 Jianjun Zhang Yubin He +6 位作者 Xian Liang Xiaolin Ge Yuan Zhu Min Hu Zhengjin Yang Liang Wu Tongwen Xu 《Science China Materials》 SCIE EI CSCD 2019年第7期973-981,共9页
As a critical component of alkaline fuel cells, anion exchange membranes determine the energy efficiency, output power density and the long term stability. Recently, the anion exchange membranes with gemini-cation sid... As a critical component of alkaline fuel cells, anion exchange membranes determine the energy efficiency, output power density and the long term stability. Recently, the anion exchange membranes with gemini-cation side chains exhibit superior ion conductivity due to their good nanophase separation. However, the costly and complicated synthesis limits their scaling up and commercialization. To address this problem, a convenient synthetic procedure under mild conditions is well developed. A tertiary amine precursor is introduced onto the polymer by the nucleophilic substitution reaction to avoid the conventional chloro/bromo-methylation. Followed by a simple Menshutkin reaction with 6- bromo-N,N,N-trimethylhexan-1-am inium bromide, the polym er electrolytes are obtained in a high yield. The resulting anion exchange membranes with high conductivity, good fuel cell performance and restricted swelling suggest the potential for the application in fuel cell devices. 展开更多
关键词 anion exchange membranes fuel cell nucleophilic substitution reaction nano-phase separation
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