Density functional theory（DFT） calculations unambiguously verify that there is little or no direct metalmetal bonding in the dinuclear copper（I） benzamidinate complex [Cu2（LRW）2]（2）{LRR=[PhC（NR）（NR＇）]-（R...Density functional theory（DFT） calculations unambiguously verify that there is little or no direct metalmetal bonding in the dinuclear copper（I） benzamidinate complex [Cu2（LRW）2]（2）{LRR=[PhC（NR）（NR＇）]-（R= 2,6-iPr2C6H3, R＇=SiMe3）} with a short Cu-Cu distance[0.24454（4） nm].展开更多
An affinity adsorbent, benzamidine Sepharose 4B, was used to separate and purify thrombin like enzymes. The p aminobenzamidine as a specific ligand was coupled to the matrix-Sepharose 4B. The recombinant thrombin like...An affinity adsorbent, benzamidine Sepharose 4B, was used to separate and purify thrombin like enzymes. The p aminobenzamidine as a specific ligand was coupled to the matrix-Sepharose 4B. The recombinant thrombin like enzyme-defibrase was used as a model in order to evaluate the efficiency of this biospecific affinity adsorbent. The homogeneity of the enzyme preparation was comfirmed as one band on sodium dodecyl sulfate polyacrylamide gel electrophoresis.展开更多
A novel and simple t-BuOLi/I2-mediated synthesis of 1,2,4-trisubstituted imidazoles was developed without transition-metal added. The transition-metal-free strategy tolerated a range of sdbstrates and provided product...A novel and simple t-BuOLi/I2-mediated synthesis of 1,2,4-trisubstituted imidazoles was developed without transition-metal added. The transition-metal-free strategy tolerated a range of sdbstrates and provided products in moderate to good yields with 100% regioselectivity.展开更多
基金Supported by the National Natural Science Foundation of China（No.21201006）, the Special Research Fund for the Doctoral Program of Higher Education of China（No.26920123415120002） and the Fund of the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry of China（No.2012-27）.Acknowledgements We thank Prof ZHANG Hongjie（Changchun Institute of Applied Chemistry, Chinese Academy of Sciences） for his helpful suggestions.
文摘Density functional theory（DFT） calculations unambiguously verify that there is little or no direct metalmetal bonding in the dinuclear copper（I） benzamidinate complex [Cu2（LRW）2]（2）{LRR=[PhC（NR）（NR＇）]-（R= 2,6-iPr2C6H3, R＇=SiMe3）} with a short Cu-Cu distance[0.24454（4） nm].
文摘An affinity adsorbent, benzamidine Sepharose 4B, was used to separate and purify thrombin like enzymes. The p aminobenzamidine as a specific ligand was coupled to the matrix-Sepharose 4B. The recombinant thrombin like enzyme-defibrase was used as a model in order to evaluate the efficiency of this biospecific affinity adsorbent. The homogeneity of the enzyme preparation was comfirmed as one band on sodium dodecyl sulfate polyacrylamide gel electrophoresis.
文摘A novel and simple t-BuOLi/I2-mediated synthesis of 1,2,4-trisubstituted imidazoles was developed without transition-metal added. The transition-metal-free strategy tolerated a range of sdbstrates and provided products in moderate to good yields with 100% regioselectivity.
