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The Synthesis of 7-[1-Aza-2-(dimethylamino)vinyl]-4-methylhydroquinolin-2-ones and their Isomerism in Different Solvents 被引量:3
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作者 Qian ZHANG Ying CHEN +4 位作者 Yun Hong ZHENG Wan Yun SHENG Peng XIAYi XIA Zheng Yu YANG Kuo Hsiung LEE 《Chinese Chemical Letters》 SCIE CAS CSCD 2001年第1期11-14,共4页
The reaction of 7-amino-4-methyl-2(1H)-quinolone 1 and its 6-methyl derivative 2 with Vilsmeier reagent (DMF and POCl3) afforded 7-[1-aza-2-(dimethylamino)vinyl]-4-methyl-hydroquinolin-2-one 3 and 7-[1-aza-2-(dimethyl... The reaction of 7-amino-4-methyl-2(1H)-quinolone 1 and its 6-methyl derivative 2 with Vilsmeier reagent (DMF and POCl3) afforded 7-[1-aza-2-(dimethylamino)vinyl]-4-methyl-hydroquinolin-2-one 3 and 7-[1-aza-2-(dimethylamino)vinyl]-4,6-dimethylhydroquinolin- 2-one 4, respec-tively. H-1-NMR analysis in different solvents indicated that isomerism occurred due to hindered rotation around the (CH3)(2)N-C:N o -bond. The rotational energy barrier of 3 was calculated. 展开更多
关键词 7-[1-aza-2-(dimethylamino)vinyl]-hydroquinolin-2-ones ISOMERISM H-1-NMR
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Enantioselective Hydrogenation of Ethyl 2-Oxo-4-phenylbutyrate on Cinchona-Platinum Catalysts 被引量:2
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作者 夏涛 任其龙 吴平东 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第6期764-770,共7页
Enantioselective hydrogenation of ethyl 2-oxo-4-phenylbutyrate to ethyl (R)-2-hydroxy-4-phenyl- bu- tyrate on Pt/γ-Al2O3 modified by 10,11-dihydrocinchonidine was studied by investigating the influences of the amou... Enantioselective hydrogenation of ethyl 2-oxo-4-phenylbutyrate to ethyl (R)-2-hydroxy-4-phenyl- bu- tyrate on Pt/γ-Al2O3 modified by 10,11-dihydrocinchonidine was studied by investigating the influences of the amount of modifier, initial concentration of reactant, pressure and temperature on conversion and enantiometric excess in a stirred autoclave and the effects of the liquid velocity, gas velocity, modifier concentration and various catalytic beds in a trickle-bed reactor. The maximum optical yields were about 50% and 60% in the two types of reactors, respectively. It was assumed that the total hydrogenation rate included the reaction rates over the unmodified and modified active sites on platinum surface and a kinetic model, which fitted the experimental data well in autoclave, was obtained. A simplified plug-flow model was proposed to describe the bed average efficiency of trickle-bed reactor. 展开更多
关键词 enantioselective hydrogenation ethyl (R)-2-hydroxy-4-phenylbutyrate trickle-bed reactor KINETICS
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Synthesis, Bioactivity, and Crystal Structure Analysis of 2-(3-Oxobenzo[d]isothiazol-2(3H)-yl)ethyl Benzoates 被引量:3
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作者 王向辉 游诚航 林强 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第8期1123-1130,共8页
Fifteen novel 2-(3-oxobenzo[d]isothiazol-2(3H)-yl)ethyl benzoates were synthesi- zed by the condensation of 2-(2-hydroxyethyl)benzo[d]isothiazol-3(2H)-one with substituted benzoic acids in dichloromethane. All... Fifteen novel 2-(3-oxobenzo[d]isothiazol-2(3H)-yl)ethyl benzoates were synthesi- zed by the condensation of 2-(2-hydroxyethyl)benzo[d]isothiazol-3(2H)-one with substituted benzoic acids in dichloromethane. All the compounds were characterized by elemental analysis, IR, ESI-MS and 1H NMR. The crystal structures for 2-(2-hydroxyethyl)benzo[d]isothiazol-3(2H)-one (2) and 2-(3-oxobenzo[d]isothiazol-2(3H)-yl)ethyl 2-methoxybenzoate (30) have been determined by X-ray crystal structure analysis. Compound 2 (C9H9NO2S) crystallizes in the monoclinic system, space group Pn with a = 10.552(3), b = 7.849(2), c = 10.765(4) A, β = 103.128(4)°, V= 868.3(5) A3, Mr = 195.24, Dc = 1.493 Mg.m-3, μ = 0.33 mm-1, F(000) = 408, Z = 4, R= 0.0314 and wR= 0.0628. Compound 30 (C17H15NO4S) crystallizes in the triclinic system, space group P1 with a = 8.028(2), b = 9.300(2), c = 10.430(3)A, V= 752.1(3)A3, Mr = 329.36, D,= 1.454 Mg.m-3, p = 0.24 mm-1, F(000) = 344, Z = 2, R = 0.0377 and wR = 0.0904. The preliminary biological test indicated that the title compounds show better growth inhibitory activity against the gram-positive bacteria than the gram-negative bacteria. 展开更多
关键词 2-(3-oxobenzo[d]isothiazoi-2(3H)-yl)ethyl benzoates synthesis crystal structure hydrogen bonds
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Synthesis and Crystal Structure of a Novel Ethyl 5-(4-(2-Phenylacetamido)phenyl)-1H-pyrazole-3-carboxylate as an Acrosin Inhibitor 被引量:2
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作者 祁晶晶 周有骏 +5 位作者 刘雪飞 丁莉莉 郑灿辉 盛春泉 吕加国 朱驹 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第11期1604-1608,共5页
The title compound (ethyl5-(4-(2-phenylacetamido)phenyl)-lH-pyrazole-3-carboxylate, C20H19N3O3) was synthesized by the reaction of Claisen condensation, cyclization, reduction and acylation. The structure was ch... The title compound (ethyl5-(4-(2-phenylacetamido)phenyl)-lH-pyrazole-3-carboxylate, C20H19N3O3) was synthesized by the reaction of Claisen condensation, cyclization, reduction and acylation. The structure was characterized by X-ray diffraction, MS, NMR and IR. It belongs to the monoclinic system, space group C2/c with a = 22.723(9), b = 9.324(4), c = 18.890(8) A, β = 114.259(6)°, V = 3649(3) A^3, Dc = 1.272 Mg·m^3, Z = 8, Mr = 349.38, p = 0.087 mm^-1, F(000) = 1472, the final R = 0.0615 and wR = 0.1643. The biological test shows that the title compound has a moderate acrosin inhibition activity. 展开更多
关键词 ethyl 5-(4-(2-phenylacetamido)phenyl)-1H-pyrazole-3-carboxylate crystal structure acrosin inhibitor
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Long-term and combined effects of N-[2-(nitrooxy)ethyl]-3-pyridinecarboxamide and fumaric acid on methane production,rumen fermentation, and lactation performance in dairy goats 被引量:1
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作者 Zongjun Li Xinjian Lei +3 位作者 Xiaoxu Chen Qingyan Yin Jing Shen Junhu Yao 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2022年第3期852-863,共12页
Background:In recent years,nitrooxy compounds have been identified as promising inhibitors of methanogenesis in ruminants.However,when animals receive a nitrooxy compound,a high portion of the spared hydrogen is eruct... Background:In recent years,nitrooxy compounds have been identified as promising inhibitors of methanogenesis in ruminants.However,when animals receive a nitrooxy compound,a high portion of the spared hydrogen is eructated as gas,which partly offsets the energy savings of CH4mitigation.The objective of the present study was to evaluate the long-term and combined effects of supplementation with N-[2-(nitrooxy)ethyl]-3-pyridinecarboxamide(NPD),a methanogenesis inhibitor,and fumaric acid(FUM),a hydrogen sink,on enteric CH4production,rumen fermentation,bacterial populations,apparent nutrient digestibility,and lactation performance of dairy goats.Results:Twenty-four primiparous dairy goats were used in a randomized complete block design with a 2×2factorial arrangement of treatments:supplementation without or with FUM(32 g/d)or NPD(0.5 g/d).All samples were collected every 3 weeks during a 12-week feeding experiment.Both FUM and NPD supplementation persistently inhibited CH4yield(L/kg DMI,by 18.8%and 18.1%,respectively)without negative influence on DMI or apparent nutrient digestibility.When supplemented in combination,no additive CH4suppression was observed.FUM showed greater responses in increasing the molar proportion of propionate when supplemented with NPD than supplemented alone(by 10.2%vs.4.4%).The rumen microbiota structure in the animals receiving FUM was different from that of the other animals,particularly changed the structure of phylum Firmicutes.Daily milk production and serum total antioxidant capacity were improved by NPD,but the contents of milk fat and protein were decreased,probably due to the bioactivity of absorbed NPD on body metabolism.Conclusions:Supplementing NPD and FUM in combination is a promising way to persistently inhibit CH4emissions with a higher rumen propionate proportion.However,the side effects of this nitrooxy compound on animals and its residues in animal products need further evaluation before it can be used as an animal feed additive. 展开更多
关键词 Bacterial populations Dairy goat Fumaric acid Lactation performance Methane emissions N-[2-(nitrooxy)ethyl]-3-pyridinecarboxamide Rumen fermentation
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Synthesis, Crystal Structure and Antitumor Activities of N-(2-(1H-indol-3-yl)ethyl)-2-nitroaniline 被引量:1
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作者 贺殿 杨竹青 侯猛 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第12期1784-1788,共5页
The title compound, N-(2-(1H-indol-3-yl)ethyl)-2-nitroaniline(C16H15N3O2, Mr = 281.31), has been synthesized by the multicomponent reaction of milder Ullmann, and its structure was characterized by 1H NMR, 13 C NMR, I... The title compound, N-(2-(1H-indol-3-yl)ethyl)-2-nitroaniline(C16H15N3O2, Mr = 281.31), has been synthesized by the multicomponent reaction of milder Ullmann, and its structure was characterized by 1H NMR, 13 C NMR, IR, H RMS(ESI) and single-crystal X-ray diffraction. It crystallizes in monoclinic, space group I2/c with a = 15.0212(10), b = 9.4911(6), c = 20.3075(13) A, β = 100.776(7)o, V = 2844.1(3)A3, Z = 8, Dc = 1.314 g/cm3, F(000) = 1184.0, μ = 0.089 mm-1, the final R = 0.0574 and w R = 0.1688 for 1701 observed reflections(I 】 2σ(I)). X-ray analysis indicates three major N(2)–H(2)···O(2), C(13)–H(13)···O(2), N(2)–H(2)···N(3) hydrogen bonds and π-π stacking interactions in the crystal structure. The preliminary biological test shows that the title compound has a good antitumor activity against A549 in vitro with the IC50 value of 35 μmol/L. 展开更多
关键词 crystal structure SYNTHESIS N-(2-(1H-indol-3-yl)ethyl)-2-nitroaniline biological activity
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Synthesis and Crystal Structure of Ethyl 3-(4-Chlorophenyl)-3,4-dihydro-6-methyl-4-oxo-2-(pyrrolidin-1-yl)furo[2,3-d]pyrimidine-5-carboxylate 被引量:2
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作者 胡扬根 徐靖 丁明武 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第6期689-692,共4页
The crystal structure of the title compound ethyl 3-(4-chlorophenyl)-3,4-dihydro-6- methyl-4-oxo-2-(pyrrolidin-1-yl)furo[2,3-d]pyrimidine-5-carboxylate (C20H20ClN3O4, Mr= 401.84) has been prepared and determined... The crystal structure of the title compound ethyl 3-(4-chlorophenyl)-3,4-dihydro-6- methyl-4-oxo-2-(pyrrolidin-1-yl)furo[2,3-d]pyrimidine-5-carboxylate (C20H20ClN3O4, Mr= 401.84) has been prepared and determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 20.6215(9), b = 8.5311(4), c = 21.6886(9) A^°, β = 91.607(1)°, V = 3814.0(3)A^°^3, Z = 8, Dc = 1.400 g/cm^3, F(000) = 1680, μ = 0.233 mm^-1, R = 0.0718 and wR = 0.1545 for 6717 observed reflections with I 〉 2σ(I). X-ray diffraction analysis reveals two crystallographically independent molecules in the asymmetric unit. 展开更多
关键词 crystal structure ethyl 3-(4-ehlorophenyl)-3 4-dihydro-6-methyl-4-oxo-2- (pyrrolidin-1-yl)furo[2 3-d]pyrimidine-5-earboxylate aza-Wittig reaction synthesis
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A new free recoverable and reusable mono-alkaloid-type ligand and its use in preparation of ethyl(2R,3S)-2,3-dihydroxy-3-phenylpropionate
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作者 Qiao Feng Wang Hui Chen Yan Zhao Xiao Ye Li Sheng Yong Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第7期763-766,共4页
A new free recoverable and reusable mono-alkaloid-type ligand has been synthesized by a simple method. With highly polar groups, the ligand can be recycled and reused eight times to prepare ethyl (2R,3S)-2,3-dihydro... A new free recoverable and reusable mono-alkaloid-type ligand has been synthesized by a simple method. With highly polar groups, the ligand can be recycled and reused eight times to prepare ethyl (2R,3S)-2,3-dihydroxy-3-phenylpropionate with high yield and ee via asymmetric dihydroxylation (AD) reaction. C 2009 Sheng Yong Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 展开更多
关键词 Cinchona alkaloid Recoverable and reusable ligand ethyl 2R 3S)-2 3-dihydroxy-3-phenylpropionate
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Identification of N-Methyl Bis(2-(Alkyloxy-Alkylphosphoryloxy)Ethyl) Amines by LC-HRMS/MS
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作者 Huilan Yu Shilei Liu +2 位作者 Daoming Sun Chengxin Pei Yu Xiang 《American Journal of Analytical Chemistry》 2014年第13期820-827,共8页
N-Methyl bis(2-(alkyloxy-alkylphosphoryloxy)ethyl)amines, which are abbreviated as PNPs, are a series of new skeleton chemicals belonging to schedule 2.B.04 chemicals of Chemical Weapons Convention (CWC). PNPs are imp... N-Methyl bis(2-(alkyloxy-alkylphosphoryloxy)ethyl)amines, which are abbreviated as PNPs, are a series of new skeleton chemicals belonging to schedule 2.B.04 chemicals of Chemical Weapons Convention (CWC). PNPs are important markers of chemical warfare agents because they are structurally relative to both nerve agents and N-mustards. In this study, fragmentation pathways of the most characteristic fragment ions in Q-TOF mass spectrometry were proposed based on the information from accurate mass and secondary fragmentations of product ions scan experiments. Results indicated that the base ion in LC/HRMS was the quasi-molecular ion [M+H]+. In LC-HRMS/MS, it was [M+H-CnH2n+1P(O)(OH)CmH2m+1O]+ fragment ion which was formed by losing an alkyloxy alkylphosphoryloxy group from the quasi-molecular ion. The diagnostic ion m/z84.0814 was identified as [C5H10N]+, which was the group of (CH2=CH)2N+(H)CH3. PNPs have two protonated centers. One is on the N atom, the other is on the O atom (P=O). O-n-propyl PNPs generally exhibited two fragmentation pathways. Firstly, the quasi-molecular ion [M+H]+ lost a propoxy alkylphosphoryloxy group to produce [R1P(OH+)(O-n-C3H7)OCH2CH2N(CH3)CH=CH2]+, which could be fragmented further to produce [C5H10N]+ ion. Secondly, [R1P(OH+)(O-n-C3H7) OCH=CH2]+ ions were produced from [M+H]+ and fragmented further to produce the abundant ions [R1P(OH+)(OH)OCH =CH2]. However, O-isopropyl PNPs characteristically produced weak fragment ions [M+H-C3H6]+, which were presumably formed via loss of CH3CH=CH2 from [M+H]+. Other PNPs showed similar fragmentation pathways as O-n-propyl PNPs. On the summarization of the MS fragmentation pathways of PNPs, LC-HRMS/MS quantitative and qualitative methods were developed and applied to analyze N-Methyl bis(2-(butoxy-methylphosphoryloxy)ethyl]amine in high background organic samples. The analytical results had successfully supported the sample preparation for the 33rd official proficiency test of Organization for Prohibition of Chemical Weapons (OPCW). 展开更多
关键词 Chemical Weapons LC-HRMS/MS N-Methyl Bis(2-(Alkyloxy-Alkylphosphoryloxy)ethyl)Amines Fragmentation Pathways Analysis
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Synthesis and Crystal Structure of 4-(4,6-Dimethoxylpyrimidin-2-yl)-3-thiourea Carboxylic Acid Ethyl Ester
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作者 ZHANG Yang HUANG Jie +2 位作者 SONG Ji-Rong REN Ying-Hui XU Kang-Zhen 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第2期195-199,共5页
4-(4,6-Dimethoxyl-pyrimidin-2-yl)-3-thiourea carboxylic acid ethyl ester was synthesized by the reaction of 2-amino-4,6-dimethoxyl pyrimidine, potassium thiocyanate and methyl chloroformate in ethyl acetate. Single ... 4-(4,6-Dimethoxyl-pyrimidin-2-yl)-3-thiourea carboxylic acid ethyl ester was synthesized by the reaction of 2-amino-4,6-dimethoxyl pyrimidine, potassium thiocyanate and methyl chloroformate in ethyl acetate. Single crystals suitable for X-ray measurement were obtained by recrystallization with the solvent of dimethyl formamide at room temperature. The crystal structure was determined by X-ray diffraction analysis. Crystallographic data: C10H14N4O4S, M, = 286.31, monoclinic, space group C2/c with a = 2.5309(3), b = 0.67682(6), c = 1.74237(19) nm, β = 114.744(3)°, V= 2.7106(5) nm3, Dc = 1.403 g/cm3, p = 0.225 mm-1, F(000) = 1200, Z= 8, R= 0.0514 and wR= 0.1529. 展开更多
关键词 4-(4 6-dimethoxyl-pyrimidin-2-yl)-3-thiourea carboxylic acid ethyl ester synthesis crystal structure ^-~ aromatic stacking interactions
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Synthesis and Crystal Structure of Ethyl 2-(6-(1,3-Dioxo-4,5,6,7-tetrahydro-1H-isoindol-2(3H)-yl)-7-fluoro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl) Butanoate
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作者 吴道新 罗斐贤 +4 位作者 莫洪波 王晓光 任叶果 SIMPSON Jim 黄明智 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第5期585-589,共5页
The title compound ethyl 2-(6-(1,3-dioxo-4,5,6,7-tetrahydro-lH-isoindol-2(3H)- yl)-7-fluoro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl) butanoate 3 was synthesized by the reaction of ethyl 2-(6-amino-7-fluoro-3-ox... The title compound ethyl 2-(6-(1,3-dioxo-4,5,6,7-tetrahydro-lH-isoindol-2(3H)- yl)-7-fluoro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl) butanoate 3 was synthesized by the reaction of ethyl 2-(6-amino-7-fluoro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl) butanoate with 4,5,6,7- tetraydrophthalic anhydride, and its structure was determined by X-ray single-crystal diffraction. The crystal belongs to the monoclinic system, space group P2 1/n with a = 9.3469(2), b = 16.7715(5), c = 13.7153(4) A, β= 104.9680(10)°, μ = 0.107 mm^-1, Mr = 430.42, V= 2077.08(10) ,A3, Z= 4, Dc = 1.376 g/cm3, F(000) = 904, T= 296(2) K, R = 0.0508 and wR = 0.1478. 展开更多
关键词 synthesis crystal structure ethyl 2-(6-amino-7-fluoro-3-oxo-2H-benzo[b][1 4]oxazin-4(3H)-yl) butanoate herbicidal protox inhibitors
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Synthesis of Temperature- and pH-Sensitive Graft Copolymer Containing 2-(Diethylamino)ethyl Methacrylate and N-Vinylcaprolactam onto Silicone Rubber
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作者 Alejandra Jiménez-Morales Alejandro Ramos-Ballesteros Emilio Bucio 《Open Journal of Polymer Chemistry》 CAS 2016年第3期15-26,共13页
Silicone rubber films were modified by the consecutive grafting of 2-(diethylamino)ethyl methacrylate (DEAEMA) and N-vinylcaprolactam (NVCL) using direct method on two steps with gamma-rays. The effect of absorbed dos... Silicone rubber films were modified by the consecutive grafting of 2-(diethylamino)ethyl methacrylate (DEAEMA) and N-vinylcaprolactam (NVCL) using direct method on two steps with gamma-rays. The effect of absorbed dose and monomer concentration on grafting degree was determined. The grafted samples were verified by FTIR-ATR spectroscopy and swelling;thermal properties were analyzed by DSC and TGA. The stimuli-responsive behavior was studied by swelling and/or DSC. Thermo- and pH-sensitive films of (PP-g-DEAEMA)-g-NVCL presented a pH critical at 3.2 and LCST around 63.5℃. 展开更多
关键词 Radiation-Grafting Smart Polymers 2-(Diethylamino)ethyl Methacrylate N-VINYLCAPROLACTAM
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真丝绸表面光接枝2-(双甲基胺)乙基甲基丙烯酸酯改性研究 被引量:1
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作者 刘瑞芹 谢雷东 +1 位作者 姚思德 盛康龙 《辐射研究与辐射工艺学报》 CAS CSCD 北大核心 2005年第2期116-117,共2页
A new method has been established to graft vinyl monomers onto silk fabrics by ultraviolet rays without any initiator or photosensitizer, in an attempt to improve undesirable properties of the materials with increased... A new method has been established to graft vinyl monomers onto silk fabrics by ultraviolet rays without any initiator or photosensitizer, in an attempt to improve undesirable properties of the materials with increased wrinkle recovery, better dyeing ability and color-fastness, and higher resistance to photo-yellowing, etc. In this work, ef- fectiveness of different types of UV devices and experimental conditions of the photo-induced graft-copolymeri- zation were investigated to control the influential factors on the grafting yield and properties of the graft-copolymer. Surface characteristics and structure changes, thermal properties and wrinkle resistance of grafted silk fabrics were studied. The grafted silk fabrics showed improved properties in crease resistance, dyeing ability and color-fastness, and heat stability as well. In detail, graft-copolymerization of 2-(Dimethylamino)ethyl methacrylate onto silk fabrics can make silk fabrics undergo from slight to drastic changes in their dyeing behavior, i.e., rate of dyeing and uptake of acid dyes. Different reaction systems of the same monomer can lead to reverse dyeing properties, indicating not only the function but also the structure affects the properties of grafted silk fab- rics, especially the color-fastness. The UV light graft copolymerization method is of significance in silk industrial applications in terms of the facility cost, operation convenience and grafting efficiency, in comparison to Co 60 γ-ray and electron beam irradiation facilities. 展开更多
关键词 真丝绸 光化学接枝 染色性能 2-(双甲基胺)乙基甲基丙烯酸酯
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大豆分离蛋白接枝氨基封端聚2-丙烯酰胺基-2-甲基丙磺酸的合成及溶液性质研究 被引量:6
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作者 刘晓亚 姜鹏 +3 位作者 周华 江金强 白绘宇 江明 《高分子学报》 SCIE CAS CSCD 北大核心 2009年第5期430-436,共7页
用巯基乙胺为链转移剂,过硫酸铵为引发剂合成了氨基封端的聚2-丙烯酰胺基-2-甲基丙磺酸(H2N-PAMPS).再用1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(EDC)和N-羟基琥珀酰亚胺(NHS)在室温下催化H2N-PAMPS的端氨基与大豆分离蛋白(SPI)的羧... 用巯基乙胺为链转移剂,过硫酸铵为引发剂合成了氨基封端的聚2-丙烯酰胺基-2-甲基丙磺酸(H2N-PAMPS).再用1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(EDC)和N-羟基琥珀酰亚胺(NHS)在室温下催化H2N-PAMPS的端氨基与大豆分离蛋白(SPI)的羧基反应形成酰胺键,得到接枝物SPI-g-NH-PAMPS.用1H-NMR、傅利叶红外光谱、13C-NMR对H2N-PAMPS和接枝物SPI-g-NH-PAMPS进行结构表征.用zeta电位仪、紫外可见光光谱,荧光光谱,动态激光光散射对SPI及其接枝物SPI-g-NH-PAMPS的水溶液性质进行了研究.结果表明,与SPI相比,SPI-g-NH-PAMPS的溶解性、表面疏水性、乳化性等有所改善,接枝物SPI-g-NH-PAMPS聚集体粒径增大,形成独特的核壳结构. 展开更多
关键词 大豆分离蛋白 1-(3-二甲氨基丙基)-3-乙基碳二亚胺 2-丙烯酰胺基-2-甲基丙磺酸 接枝物
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4-(2-N,N-二甲氨基-乙基)磺酰基-苯肼的合成 被引量:4
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作者 王建强 郭成 《江苏化工》 2004年第3期38-40,共3页
芳香肼4-(2-N,N-二甲氨基-乙基)磺酰基-苯肼是阳离子荧光增白剂CH制备的重要中间体,采用对位酯为原料,经过水解,加胺得到芳香胺,再经重氮化、还原的合成路线得到。还原过程中采用氯化亚锡作为还原剂提高芳香肼的收率(85%)。用熔点、红... 芳香肼4-(2-N,N-二甲氨基-乙基)磺酰基-苯肼是阳离子荧光增白剂CH制备的重要中间体,采用对位酯为原料,经过水解,加胺得到芳香胺,再经重氮化、还原的合成路线得到。还原过程中采用氯化亚锡作为还原剂提高芳香肼的收率(85%)。用熔点、红外、核磁、元素分析对产品结构进行表证。 展开更多
关键词 芳香肼 4-(2-N N-二甲氨基-乙基)磺酰基-苯肼 重氮反应 对位酯
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氧阴离子引发甲基丙烯酸-2-(N,N-二甲氨基)乙酯聚合制备Y型大分子单体 被引量:4
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作者 潘祺晟 府寿宽 倪沛红 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2002年第4期748-750,共3页
A novel well-defined water-soluble macromonomer based on 2-(dimethylamino) ethyl methacry-late(DMAEMA) was synthesized by using functional initiators such as potassium alcoholate of trimethylol-propane allyl ether via... A novel well-defined water-soluble macromonomer based on 2-(dimethylamino) ethyl methacry-late(DMAEMA) was synthesized by using functional initiators such as potassium alcoholate of trimethylol-propane allyl ether via oxyanion-initiated polymerization. GPC and 1H NMR studies confirmed that themacromonomers had narrow molecular weight distribution and each Poly(DMAEMA) chain contained apolymerizable allyl group. The macromonomers were highly surface active in aqueous media. They havepotential applications in preparation of surface-clean and functional latexes both as effective stabilizers andas co-monomers. 展开更多
关键词 氧阴离子聚合 Y型大分子单体 甲基丙烯酸-2-(N N-二甲氨基)乙酯 结构
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1-[2-(N,N-二甲基氨基)乙基]-5-巯基-1H-四氮唑的制备 被引量:1
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作者 李永伟 王娟 +2 位作者 李瑞民 朱智甲 白文举 《河北工业科技》 CAS 2015年第1期8-11,共4页
介绍了一种1-[2-(N,N-二甲基氨基)乙基]-5-巯基-1H-四氮唑(DMMT)的合成方法。2-(N,N-二甲基氨基)乙胺与二硫化碳反应,制得取代的2-(N,N-二甲基氨基)乙胺基二硫代羧酸;2-(N,N-二甲基氨基)乙胺基二硫代羧酸与氯甲酸乙酯反应,得到2-(N,N-... 介绍了一种1-[2-(N,N-二甲基氨基)乙基]-5-巯基-1H-四氮唑(DMMT)的合成方法。2-(N,N-二甲基氨基)乙胺与二硫化碳反应,制得取代的2-(N,N-二甲基氨基)乙胺基二硫代羧酸;2-(N,N-二甲基氨基)乙胺基二硫代羧酸与氯甲酸乙酯反应,得到2-(N,N-二甲基氨基)乙胺基二硫代羧酸与乙氧基甲酸的二硫代酸酐;二硫代酸酐再经三乙胺碱解,制得2-(N,N-二甲基氨基)乙基异硫氰酸酯;2-(N,N-二甲基氨基)乙基异硫氰酸酯与叠氮化钠反应,制得目标产物1-[2-(N,N-二甲基氨基)乙基]-5-巯基-1H-四氮唑(DMMT)。产物以N,N-二甲基氨基乙胺计,收率为48.0%。采用该法,能够方便地制得1-[2-(N,N-二甲基氨基)乙基]-5-巯基-1H-四氮唑,产物收率高,反应条件温和,操作过程简便,三废少,环境污染小。 展开更多
关键词 有机合成化学 1-[2-(N N-二甲基氨基)乙基]-5-巯基-1H-四氮唑 氯甲酸乙酯 叠氮化钠 合成
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抗癌药1,4-二[2-(二甲胺基)乙胺基]-5,8-二羟基蒽醌的合成研究 被引量:1
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作者 康乐 卢俊瑞 +6 位作者 李平 陈丽然 梁香 鲍秀荣 高淑菊 马红雨 张昌松 《天津理工大学学报》 2007年第1期4-7,共4页
以2,3-二氢-1,4,5,8-四羟基蒽醌和N,N-二甲基乙二胺为原料,合成了抗癌药物1,4-二[2-(二甲胺基)乙胺基]-5,8-二羟基蒽醌(下称:AQ4),考察了温度、溶剂、催化剂、氧化方式等对其产品收率的影响.确定的较佳工艺方法为:以2... 以2,3-二氢-1,4,5,8-四羟基蒽醌和N,N-二甲基乙二胺为原料,合成了抗癌药物1,4-二[2-(二甲胺基)乙胺基]-5,8-二羟基蒽醌(下称:AQ4),考察了温度、溶剂、催化剂、氧化方式等对其产品收率的影响.确定的较佳工艺方法为:以2,3-二氢-1,4,5,8-四羟基蒽醌和N,N-二甲基乙二胺为起始原料进行缩合反应,用N,N-二甲基乙二胺兼做溶剂,首先制得1,4-二[2-(二甲胺基)乙胺基]-5,8-二羟基蒽醌隐色体(AQ4隐色体),进而用硝基苯进行氧化反应制得AQ4,产品总收率达到67.5%,产品结构利用红外(IR)、核磁(。HNMR)进行了表征.较佳的缩合反应条件为:反应温度50~55℃、反应时间2h;较佳的氧化反应条件为:反应温度140~145℃、回流反应时间15min. 展开更多
关键词 2 3-二氢-1 4 5 8-四羟基蒽醌 N N-二甲基乙二胺 抗癌药物 1 4-二[2-(二甲胺基)乙胺基]-5 8-二羟基蒽醌
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用4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺测定微量蛋白质 被引量:1
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作者 张丽娟 《安徽工业大学学报(自然科学版)》 CAS 2011年第4期380-383,共4页
应用水溶性4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺(DNAF)探针,并结合十二烷基硫酸钠(SDS),研究DNAF-SDS体系用于牛血清白蛋白(BSA)的定量测定方案。线性范围为5.0×10-9~8.3×10-7 mol/L,检出限为1.0×10-10 mol/L... 应用水溶性4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺(DNAF)探针,并结合十二烷基硫酸钠(SDS),研究DNAF-SDS体系用于牛血清白蛋白(BSA)的定量测定方案。线性范围为5.0×10-9~8.3×10-7 mol/L,检出限为1.0×10-10 mol/L。4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺作为一种新型的荧光染料探针在微量蛋白质定量测定方面具有良好应用潜力。 展开更多
关键词 4 9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺 蛋白测定 荧光分析法
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4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺与蛋白质相互作用
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作者 张丽娟 《化学工业与工程》 CAS 2011年第3期45-48,共4页
应用水溶性4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺(DNAF)探针,研究了DNAF与牛血清白蛋白(BSA)的相互结合作用机理。计算出相应的热力学参数ΔH、ΔG以及ΔS;通过荧光猝灭方法研究结合作用,测定出结合位点数n和表观结合常数KA;... 应用水溶性4,9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺(DNAF)探针,研究了DNAF与牛血清白蛋白(BSA)的相互结合作用机理。计算出相应的热力学参数ΔH、ΔG以及ΔS;通过荧光猝灭方法研究结合作用,测定出结合位点数n和表观结合常数KA;根据荧光共振能量转移理论求得供体BSA和受体DNAF的距离r;研究了DNAF对蛋白质内源荧光猝灭的猝灭机制和主要作用力类型。 展开更多
关键词 4 9-二[N-(2-二甲氨基)乙基]-9-吖啶胺-4-甲酰胺 蛋白质 相互作用机理
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