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1,3-Dipolar Cycloaddition of Substituted Benzonitrile Oxide to 5-(R)-(l-Menthyloxy)-2(5H)-furanone
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作者 HaiHongHUANG QingHuaCHEN 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第7期593-596,共4页
Several isoxazoline compounds were obtained by the 1,3-dipolar cycloaddition of benzonitrile oxide to 5-(R)-(l-menthyloxy)-2(5H)-furanone. The reaction condition was investigated preliminarily, the structures of thes... Several isoxazoline compounds were obtained by the 1,3-dipolar cycloaddition of benzonitrile oxide to 5-(R)-(l-menthyloxy)-2(5H)-furanone. The reaction condition was investigated preliminarily, the structures of these compounds have been established via the analysis of NMR data(involved NOEID or HMBC) and the reaction seems occurred regioselectively. 展开更多
关键词 Dipolar cycloaddition benzonitrile oxide CONFIGURATION 1H-NMR NOE.
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AROMATIC AND HETEROCYCLIC NITRILES AND THEIR POLYMERS ⅩⅧ. THE POLYMERIZATION KINETICS OF BENZONITRILE CATALYZED BY METAL ACETYLACETONATE
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作者 秦伟 黄志镗 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1993年第3期273-278,共6页
The bulk polymerization of benzonitrile catalyzed by Co(Ⅱ), Co(Ⅲ) and Fe(Ⅲ) acetylacetonate was studied. The results of kinetics study show that the rate of polymerization was proportional to first power of the con... The bulk polymerization of benzonitrile catalyzed by Co(Ⅱ), Co(Ⅲ) and Fe(Ⅲ) acetylacetonate was studied. The results of kinetics study show that the rate of polymerization was proportional to first power of the concentration of catalyst and second power of the concentration of monomer. 展开更多
关键词 benzonitrile Metal acetylacetonate Catalyst Polymerization.
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Substituents Effect on the Optical Properties of Benzonitrile and Oligobenzonitriles
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作者 Hou, TJ Li, YY +2 位作者 He, YK Chen, HY Xu, XJ 《Chinese Chemical Letters》 SCIE CAS CSCD 2000年第8期693-696,共4页
The semiempirical calculations were performed to discuss the effects of different substituents on the optical properties of a series of substituted benzonitriles and their corresponding oligomers. The substituents loc... The semiempirical calculations were performed to discuss the effects of different substituents on the optical properties of a series of substituted benzonitriles and their corresponding oligomers. The substituents located in para, meta and ortho-position of the benzenoid ring involve a large range of delta-pi electron-donor-acceptor capability. Theoretical analysis shows that the optical property is affected by the steric and electronic characteristics of the substituents on the benzenoid ring, moreover, the third-order polarizability regularly varies with the polymerization degrees. 展开更多
关键词 benzonitrile derivatives OLIGOMER semiempirical calculation ZINDO
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An improved coupling reaction for the preparation of pyridylethynyl benzonitrile compounds
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作者 WANG Zhiyong LIN Wenbin +1 位作者 JIANG Chao GUO Qingxiang 《Chinese Science Bulletin》 SCIE EI CAS 2001年第19期1606-1608,共3页
An improved coupling reaction between aromatic ring and acetylene triple bond catalyzed by palladium (0) catalyses for the preparation of pyridylethynyl benzoni-trile compounds is described. Efforts were made to impro... An improved coupling reaction between aromatic ring and acetylene triple bond catalyzed by palladium (0) catalyses for the preparation of pyridylethynyl benzoni-trile compounds is described. Efforts were made to improve the reaction by changing different reaction conditions and it was found that the solvent is one important factor in this situation. 展开更多
关键词 coupling reaction pyridylethynyl benzonitrileS PALLADIUM catalysis.
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Mn(Ⅲ)-mediated radical reaction of 2-isocyano-6-alkenyl(alkynyl)benzonitriles with arylboronic acids:Synthesis of pyrroloisoquinoline derivatives
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作者 Pei Xu Yi-Ming Zhu +3 位作者 Xin-Yu Liu Xiao-Zhou Zhou Shun-Yi Wang Shun-Jun Ji 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第1期413-416,共4页
A Mn(Ⅲ) mediated radical reaction of new designed multi-functionalized 2-isocyano-6-alkenyl(alkynyl)benzonitriles with arylboronic acids has been developed.This reaction provides a method for the synthesis of pyrrolo... A Mn(Ⅲ) mediated radical reaction of new designed multi-functionalized 2-isocyano-6-alkenyl(alkynyl)benzonitriles with arylboronic acids has been developed.This reaction provides a method for the synthesis of pyrroloisoquinoline derivatives through the formation of two C-C bonds and one C-N bond via radical cascade cyclization in one step. 展开更多
关键词 2-Isocyano-6-alkenyl(alkynyl)benzonitriles Arylboronic acids Pyrroloisoquinoline derivatives Radical reaction
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THE MASS SPECTRA OF AROMATIC CONJUGATED POLYENIC ACID,METHYL BENZOATE,METHYL PHENYL KETONE,BENZONITRILE AND ANILINE AND THEIR QUANTUM CHEMICAL CALCULATIONS
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作者 赖柱根 梁德声 房耀仁 《Science China Chemistry》 SCIE EI CAS 1982年第10期1035-1043,共9页
A quantitative interpretation of mass spectra of complex organic compounds so far is notvery perfect and needs some further investigation. In this paper a mechanism of cleft-rate-determining-steps of aromatic conjugat... A quantitative interpretation of mass spectra of complex organic compounds so far is notvery perfect and needs some further investigation. In this paper a mechanism of cleft-rate-determining-steps of aromatic conjugated polyenic acid, methyl benzoate, methyl phenyl ketone,benzonitrile and aniline is proposed, and various quantum parameters of molecular ions ofaromatic conjugated polyenic compounds, together with their framents are calculated bymeans of CNDO/2 method. Through the process of calculation, the peak-height of mass spectracan be quantitatively interpreted, which means that the main factors which influence the cleftforms of simple cleavage of mass spectra of conjugated compounds given by the authorsmight be true to some extent. 展开更多
关键词 兀一 THE MASS SPECTRA OF AROMATIC CONJUGATED POLYENIC ACID METHYL BENZOATE METHYL PHENYL KETONE benzonitrile AND ANILINE AND THEIR QUANTUM CHEMICAL CALCULATIONS CNDO
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Regeneration of Spent Catalyst and Impregnation of Catalyst by Supercritical Fluid
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作者 Farid M. Gumerov Bernard Le Neindre +1 位作者 Timur R. Bilalov Ajrat A. Sagdeev 《International Journal of Analytical Mass Spectrometry and Chromatography》 2016年第4期51-65,共16页
The possibility and feasibility of using supercritical fluid СО<sub>2</sub> extraction process have been investigated and described in the book as part of the task of spent catalysts regeneration. The an... The possibility and feasibility of using supercritical fluid СО<sub>2</sub> extraction process have been investigated and described in the book as part of the task of spent catalysts regeneration. The analysis of deactivating compounds has been carried out for industrial catalysts such as: 1) palladium catalyst G-58E of ethane-ethylene fraction hydrogenation;2) nickel/kieselguhr catalyst of process of separating acetylenic compounds from isoprene;3) active aluminum oxide catalyst of methyl phenyl carbinol dehydration process;4) palladium catalyst LD-265 of hydrocarbons hydrogenation process;5) nickel-molybdenum catalysts DN-3531 and Criterion 514 of kerosene hydrotreating process. The results of the study of catalyst deactivating compounds solubility in pure supercritical carbon dioxide and supercritical carbon dioxide are modified with polar additive. The results of the solubility study are described using the Peng-Robinson equation of state. The results of the implementation of the supercritical fluid СО<sub>2</sub> extraction process with respect to deactivated industrial catalyst samples have been provided. A comparison of the characteristics of samples of catalysts regenerated using the traditional approach and the SC-CO<sub>2</sub> extraction process has been conducted. The possibility of using supercritical fluid CO<sub>2</sub> impregnation process in the synthesis of a palladium catalyst has been investigated. The synthesis of palladium chloride-based organometallic complexes has been carried out. The results of the study of solubility thereof in supercritical carbon dioxide have been provided. A dynamic supercritical fluid CO<sub>2</sub> impregnation process condition has been implemented. A comparison of the characteristics of palladium catalyst samples synthesized using the conventional approach and SC-CO<sub>2</sub> impregnation process has been conducted and presented in the book. 展开更多
关键词 Palladium Catalyst G-58E Nickel/Kieselguhr/Diatomite Catalyst Active Aluminum Oxide Catalyst Palladium Catalyst LD-265 Nickel-Molybdenum Catalysts DN-3531 and Criterion 514 Catalyst Regeneration Catalyst Activity benzonitrile Complex of Palladium Chloride Styrene Complex of Palladium Chloride Cyclohexene Complex of Palladium Chloride
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Influence of V/P Ratio on the Catalytic Performance of VPO/SiO_2 Catalysts for Ammoxidation of Chloro-Substituted Toluenes
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作者 DONG Yanling XU Longlong +4 位作者 ZHANG Zhenguo LIU Wenhui LI Xiongjian ZHONG Yalan HUANG Chi 《Wuhan University Journal of Natural Sciences》 CAS CSCD 2019年第1期23-29,共7页
A series of vanadium phosphate oxide(VPO) catalysts supported on silica(VPO/Si O2) with various mole ratios of V/P(nV:nP=1:0.8-1:3) were prepared through impregnation method. The catalytic activity was evaluated by am... A series of vanadium phosphate oxide(VPO) catalysts supported on silica(VPO/Si O2) with various mole ratios of V/P(nV:nP=1:0.8-1:3) were prepared through impregnation method. The catalytic activity was evaluated by ammoxidation reactions of several kinds of chloro-substituted toluenes(CT) in a fixed-bed reactor. The catalyst presented the best performance when nV:nP is 1:1.6. The prepared catalysts were characterized by N2 adsorption, hydrogen temperature programmed reduction(TPR) and ammonia temperature programmed desorption(TPD) and etc. The results reveal that P can decrease the bonding energy of V=O and increase the mobility of lattice oxygen which was beneficial for the improvement of the catalysts, while too much P can greatly decrease the average oxidation number of V which leads to deactivation of the catalysts. The surface acidity of the VPO/Si O2 catalysts is affected by nV:nP and the catalyst had the highest surface acidity when nV:nP is 1:1.6. The selectivity of catalysts is proportional to the surface acidity when nV:nP is lower than 1:3.0. 展开更多
关键词 AMMOXIDATION VPO/SiO2 catalyst SUBSTITUTED toluenes SUBSTITUTED benzonitrileS
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