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benzylation of Aromatic Compounds with benzyl chloride Catalyzed by Nafion/SiO_2 Nanocomposite Catalyst

Chinese Chemical Letters 2005年第4期16卷 527-530页

作者： RuiMaoHUA HaiWANG BoQingXU DepartmentofChemistry TsinghuaUniversityKeyLaboratoryofOrganicOptoelectronics＆MolecularEngineeringofMinistryofEducationBeijing100084 DepartmentofChemistry TsinghuaUniversityKeyLaboratoryofOrganicOptoelectronics＆MolecularEngineeringofMinistryofEducationBeijing100084

In the presence of Nafion/SiO2 nanocomposite catalyst, the benzylation of aromatic compounds with benzyl chloride proceeded to afford diphenylmethane derivatives in high yields. The catalyst showed high catalytic activity not only for electron-rich aromatic compounds, but also for electron-poor aromatic compounds. Under identical conditions, the self-benzylation of benzyl chloride, and dibenzylation and/or multi-benzylation of aromatic compounds were negligible.

关键词： benzylation aromatic compound benzyl chloride nafion/SiO2 nanocomposite.

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Multireference Calculation of the Photodissociation of benzyl chloride

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Chinese Journal of Chemistry 2007年第2期25卷 145-148页

作者：曹军刘亚军方维海 College of Chemistry Beijing Normal University Beijing 100875 China

The photodissociation mechanism of benzyl chloride （BzCl） under 248 nm has been investigated by the complete active space SCF （CASSCF） method by calculating the geometries of the ground （S0） and lower excited states, the vertical （Tv） and adiabatic （T0） excitation energies of the lower states, and the dissociation reaction pathways on the potential energy surfaces （PES） of SI, TI and T2 states. The calculated results clearly elucidated the photodissociation mechanism of BzCl, and indicated that the photodissociation on the PES of T1 state is the most favorable.

关键词： benzyl chloride excited state photodissociation CASSCF

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Ag-Ni alloy nanoparticles for electrocatalytic reduction of benzyl chloride

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Transactions of Nonferrous Metals Society of China 2015年第12期25卷 4001-4007页

作者：周海晖李艳玲黄家琦方晨旭单丹旷亚非湖南大学化学/生物传感与计量学国家重点实验室长沙410082 湖南大学化学化工学院长沙410082

Ag-based nanocatalysts exhibit good catalytic activity for the electrochemical reduction of organic halides. Ag-Ni alloy nanoparticles（NPs） were facilely prepared by chemical reduction, and the as-prepared nanocatalysts were characterized by X-ray diffraction, ultraviolet-visible spectroscopy, transmission electron microscopy and energy-dispersive X-ray spectroscopy. The electrocatalytic activity of Ag-Ni NPs for benzyl chloride reduction was studied in organic medium using cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. The results show that the addition of Ni element can obviously decrease the size of Ag-Ni NPs, shift the reduction peak potential（φp） of benzyl chloride positively, and increase the catalytic activity of Ag-Ni NPs. However, when the Ni content reaches a certain value, the catalytic activity of Ag-Ni NPs decreases. Meanwhile, the synergistic catalytic effect of Ag-Ni NPs was also discussed.

关键词： Ag-Ni nanoparticles benzyl chloride synergistic catalytic effect electroreduction

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Internal Conversion Study of benzyl chloride by Time-resolved Photoelectron Imaging

Internal Conversion Study of Benzyl Chloride by Time-resolve...

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第十三届全国化学动力学会议

作者： Zhonghua Ding Yanmei Wang Bing Zhang State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of Sciences

＜正＞The ultrafast internal conversion （IC） dynamics of benzyl chloride was studied with femtosecond time-resolved photoelectron imaging combined with time-resolved mass spectroscopy. The time evolution of the pare... 详细信息

关键词： benzyl chloride Time-resolved Photoelectron imaging Internal conversion Pump-probe

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Synthesis of Pharmaceutical Intermediates by Toluene benzylation over Heteropoly Acids on Different Support

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Journal of Natural Gas Chemistry 2007年第2期16卷 186-192页

作者： V. V. Bokade G. D. Yadav Catalysis Division National Chemical LaboratoryPune 411008India University Institute of Chemical TechnologyMumbai-19India University Institute of Chemical Technology Mumbai-19India

Selective formation of pharmaceutical intermediates like diphenylmethane, dimethyldiphenylmethane, benzyl toluene and benzoic acid by liquid phase, toluene benzylation with benzyl chloride as a benzylating agent, was systematically studied over plane clay （K-10, montmorillonite）, plane H-Beta, plane MFI structured titanosilicate （TS-1） and heteropoly acids [HPA, namely dodecatungstophosphoric acid [H3PO4.12WOa-xH2O] （TPA）, dodeca-molybdo phosphoric acid ammonium salt hydrate [H12Mo12N3040P＋aq] （DMAA）, sodium tungstate hydrated purified [Na12WO4.2H2O] （STH）] supported on clay, H-beta and TS-1. The 20%TPA/Clay, 30%TPA/H-Beta and 30%TPA/TS-1, were observed to be the best catalyst samples over plane clay, plane H-Beta and plane TS-1. The catalyst samples are compared with respect to benzyl chloride conversion and selectivities for diphenylmethane, dimethyl-diphenylmethane, benzyl toluene and benzoic acid. The reaction follows the pseudo-first order rate power law model. The apparent rate constants are calculated and compared with the reported ones.

关键词： toluene benzylation benzyl chloride heteropolyacid diphenylmethane dimethyl-diphenyl methane benzyl toluene benzoic acid

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