吡啶基

Interaction of Cucurbit [7] Uril with N,N'-Bisalkyl-1,3-(4,4-bispyridyl) Propanes

篇名 七元瓜环与N，N'-二烷基－1，3-（4，4'-二吡啶基）丙烷衍生物的相互作用

The synthesis, crystal structure and characterization of 4, 5-dimethyl-2-(2-pyridyl) imidazole were reported.

为了制备研究2-取代咪唑配合物，设计合成了4， 5-二甲基-2-（2-吡啶基）咪唑，用IR、MS、1H-NMR对其结构进行了确证，并对其晶体结构进行了分析。

Ethyl-4-phenyl-5-(2-pyridyl)-1,2,4-triazole was synthesized by several-step reactions fromα-picoline, and was confirmed by IR、1H-NMR and MS spectra. Part II.

以α-甲基吡啶为原料，经多步反应合成了3-乙基-4-苯基-5-(2-吡啶基)-1，2，4-三唑，并用红外光谱、1H-NMR谱及质谱对产物进行了确证。

The influences of different organic bridging ligands pyrazine,2-pyrazinecarboxylate,4,4′-bipyridine and 1,2-bis(4-pyridyl)ethane on the cobalt vanadate system were explored.

同时还研究了不同的有机桥式配体吡嗪、2-吡嗪羧酸、4，4′-联吡啶和1，2-联(4-吡啶基)乙烷在钴钒体系中的作用。

10-arylmethylene anthrone pyridine compounds and the raw materials for the reaction conditions, join in alkaline, phase transfer catalysts and acceleration response, KI synthesis of containing pyridine 10,10 - dialkyl anthraquinone.

以蒽酮和含吡啶基的化合物为反应原料，在碱性条件，加入相转移催化剂和KI加速反应的进行，来合成含吡啶基的10，10-二烷基蒽酮。

R-1,c-2, t-3, t-4-1,3-bis(4-biphenyl)-2,4-di(4-pyridyl)cyclobutane was obtained in diluted sulfuric acid by photodimerization reaction.

通过反-1-(4-联苯基)-2-(4-吡啶基)乙烯在稀硫酸中的光二聚反应合成了r-1，c-2，t-3，t-4-1，3-双(4-联苯基)-2，4-二(4-吡啶基)环丁烷。

The results show that in the protonation process, because of the effect of meso-(p-methylpyridyl), the changes of the structure and bond charge population are obvious; the frontier molecular orbitals have opposite change trend with the case of meso-yridyl, the rapid exchanges of inner hydrogens of the protonated diacid with solvent protons become more difficult.

结果表明，由于m-甲基吡啶的影响，在质子化过程中结构和键电荷布居有明显变化；前沿分子轨道具有与四吡啶基情形相反的变化趋势，质子化二酸与溶液质子的快速交换作用也变得更困难了。

Active radicals in the photolysis of (Ph3P)3CunXn (n = 1, 2; X = Cl, Br, I, CN) and (Ph3P)CuX (X = Cl, Br, I; biL = 2,2'-dipyridyl, 1,10-phenanthroline) were investigated by combination of spin trapping technique, chromatog.

用自旋捕捉技术-柱色谱-电子自旋共振相结合的方法研究了(Ph3)3CunXn(n=1，2； x=Cl，Br，I，CN)和(Ph3P)CuXX=Cl，Br，I；biL-2，2'-二吡啶基-1，10-菲绕啉光解中的活性自由基。

The products have an isoxazole mother core with 3-morpholinopyridyl substitution and possess an approxi-mately planar structure. In addition a number of ester groups, amino groups, triazole groups and oxazolidi-none groups were introduced to 5-position of the isoxazole mother core.

这些化合物均以异噁唑为母核，具有近似的平面结构，在异噁唑环的3-位引入吗啉吡啶基，而在5-位引入酯基、取代氨基、三唑环和噁唑烷酮环。

This thesis is concerned with the synthesis of new chiral sulfinyl NADH models, whose key step is the synthsis of chiral R-3-pyridyl sulfoxides.

本论文的研究工作主要是合成新的手性亚砜类辅酶NADH模型物，工作重点在手性R基-3-吡啶基亚砜的合成上。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。