搜索结果: 1-15 共查到“有机合成化学 Effect”相关记录22条 . 查询时间(0.578 秒)
Effect of various substituents on intramolecular 1,1-vinylboration, synthesis of 1-silacyclobutene derivatives
organoboration silacyclobutenes NMR
2010/12/3
The reaction of 1-boryl-1-alkenyl chlorosilane derivatives with alkynyllithium reagents [Li-C\equiv C-R3 (R3~=~Ph, SiMe3)] at low temperature (--78 °C) affords alkenyl(alkyn-1-yl)silanes. These compou...
Effect of Various Substituents on Intramolecular 1,1-Vinylboration, Synthesis of 1-Silacyclobutene Derivatives.
Alkynylsilanes triorganoboranes hydroboration organoboration
2010/10/19
The reaction of 1-boryl-1-alkenyl chlorosilane derivatives with alkynyllithium reagents [Li-C≡C-R3 (R3 = Ph, SiMe3) ] at low temperature (–78 ◦C) affords alkenyl(alkyn-1-yl)silanes. These compou...
Dynamic 1H-NMR demonstration of anomeric effect and structure: conformational and configurational analysis of N-2-(1,4-dioxane)-N'-(p-methylbenzenesulfonyl)- O-(p-methylphenoxy) İsourea
Anomeric effect dynamic NMR conformational analysis configurational analysis hydrogen bonds dioxane aminoimidoyl
2010/4/8
The conformational and configurational behavior and the structure of N-2-(1,4-dioxane)-N'-(p-methylbenzenesulfonyl)-O- (p-methylphenoxy) isourea (1) were studied using dynamic NMR. The endo-anomeric e...
The Effect of Electrocatalytic Activity and Crystal Structure of PbO2 Surfaces on Polyphenylene Oxide (PPO) Production in Acetonitrile
a-PbO2 b -PbO2 phenol electrocatalysis PPO
2010/4/9
The crystallographic nature of PbO2 films was changed by optimizing the electrolysis conditions in an electrodeposition solution of PbO2. These PbO2 films were then used to prepare PPO films. It was d...
The Effect of Electrocatalytic Activity and Crystal Structure of PbO2 Surfaces on Polyphenylene Oxide (PPO) Production in Acetonitrile
a-PbO2 b -PbO2 phenol electrocatalysis PPO
2010/4/9
The crystallographic nature of PbO2 films was changed by optimizing the electrolysis conditions in an electrodeposition solution of PbO2. These PbO2 films were then used to prepare PPO films. It was d...
专著信息
书名
Synthesis and anticancer effect of chrysin derivatives
语种
英文
撰写或编译
作者
Xing Zheng,Wei-Dong Meng,Yang-Yan Xu,Jian-Guo Cao,Feng-Ling Qing
第一作者单位
出版社
Bioorg. Med. Chem. Lett., 2003, 13, 881-884
出版...
专著信息
书名
Synthesis and anticancer effect of B-ring trifluoromethylated flavonoids
语种
英文
撰写或编译
作者
Xing Zheng,Jian-Guo Cao,Wei-Dong Meng,Feng-Ling Qing
第一作者单位
出版社
Bioorg. Med. Chem. Lett., 2003, 13, 3423...
期刊信息
篇名
Effect of Toxin from Alternaria alternate (Fr.) Keissler on leaf photosynthesis of Eupatorium adenophorum Spreng.
语种
英文
撰写或编译
作者
Dai Xinbin(戴新宾),Chen Shiguo(陈世国),Qiang Sheng*（强胜）,An Chuanfu（安传...
期刊信息
篇名
Effect of Fe on the phase and microstructure of TiC-Fe cermets by combustion synthesis/quasi-isostatic pressing
语种
英文
撰写或编译
作者
Zhang Weifang
第一作者单位
刊物名称
Materials Science and Engineering A
页面
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The Effect of Acid Digestion on the Recoveries of Trace Elements: Recommended Policies for the Elimination of Losses
Open wet digestion losses recovery elimination trace elements differential pulse polarography
2010/4/19
Digestion of biological materials is very important for trace element determinations. Although the microwave technique is mostly used, there are cases where open wet digestion is needed. This study ex...
Effect of Surfactants on Response of Promethazine PVC-Membranes
Effect of surfactant on PVC-membranes promethazine determination promethazine-selective electrode
2010/4/19
The effect of surfactants (cationic, anionic and non-ionic) on the performance of plastic membrane promethazine electrodes was studied. Three electrodes with membranes containing either sodium tetraph...
The Effect of Silane Modification on the Adsorptive Properties of Natural Pyrophyllite and Synthetic Titanium-Based Powders Prepared by the Sol-Gel Process
Aminosilane coupling agents surface modification 4-nitrophenol adsorption
2010/4/20
Our aim was to improve the relatively poor adsorption characteristics of natural pyrophyllite and those of TiOm and Ti(OR)x(OH)y(O)z obtained from titanium tetraisopropoxide (TTIP) by the sol-gel proc...
The Effect of Metal Loading on Structural Characteristics and Low Temperature CO Oxidation Activity of Coprecipitated Co/Al2O3
Catalysis Catalyst activation Environment Precipitation CO oxidation cobalt-alumina catalysts
2010/4/20
The Effect of Metal Loading on Structural Characteristics and Low Temperature CO Oxidation Activity of Coprecipitated Co/Al2O3.
The Effect of Cultural Conditions on the Variations of SOD, CAT and GSH-Px Activities and LPO Levels in the Filamentous Fungus Fusarium equiseti
Fusarium glycerol saccharose glycine peptone SOD CAT GSH-Px LPO (MDA)
2010/4/21
The changes in the activity of cellular detoxifying defence enzymes such as SOD, CAT and GSH-Px against superoxide anion radical and hydrogen peroxide, and in LPO levels in the filamentous fungus, Fus...
The effect of radiation on the persistent length of a chain in a water solution of polymer is considered in the work. This effect is suggested to be related to the breaking of the hydrogen bonds in hy...
