-噻唑烷

This oxazolidone is astable and rigid 5-member cycle. Thus, the thermal stability andmechanical properties of cured resins containing polycould be improved dramatically.

噁唑烷酮为稳定的五元环，刚性大，因此固化反应后生成的聚噁唑烷酮有可能使树脂的热稳定性提高，力学性能改进。

In this thesis, 1, 5-diaryl-3-pyrazilidinones, 1, 5-diaryl-3-hydroxypyrazoles and 3-(2, 3, 4, 6-tetraacetyl-β-D-glucopyranos-1-yl)-1, 5-diaryl-1H-pyrazoles are designed and synthesized.1, 5-diaryl-3-pyrzolidinones were obtained by condensation of 3-arylpropenates and phenylhydrazine or fluorophenylhydrazine under the catalysis of sodium methylate and the yields were about 55-80%.

在本文中，设计合成了1，5-二芳基-3-吡唑烷酮化合物、1，5-二芳基-3-吡唑烷酮化合物和3-(2，3，4，6-四乙酰基-β-D-吡喃葡萄糖-1-基)-1，5-二芳基吡唑化合物。以3-芳基-2-丙烯酸酯为原料，与芳基肼在醇钠的催化作用下，反应可以生成1，5-二芳基-3-吡唑烷酮，产率在55%以上。

Solvent dosage is 10mL/ gram epichlorohydrin. The yield of 5-chloromethyl-2-oxazolidinone was more than 65.2%. 5-Chloromethyl-2-oxazolidinone and sodium phenolate were condensated to give 5-phenoxymethyl-2-oxazolidinone after taking off the sodium chloride in yield of 63.0%~78.0%. Dimethylsulfoxide was used as the solvent, and orthogonal experiment to the reaction condition had been carried out.

用5-氯甲基-2-噁唑烷酮和酚钠缩合，脱去氯化钠后生成5-芳氧甲基-2-噁唑烷酮类化合物，选用二甲亚砜为溶剂，对反应条件进行了正交实验，最佳条件为：反应温度120℃、反应时间20h、物料配比1：1，产率为63.0%～78.0%。

The optimum conditions were reaction temperature 120°C, reaction time 20h, mole ratio of 5-chloromethyl-2-oxazolidinone and sodium phenolate 1:1. 3,5-Dimethylphenol and epichlorohydrin in sodium hydroxide were condensated to give l,2-epoxy-3-phenoxy propane, then the reation of l,2-epoxy-3-phenoxypropane and the carbamate afforded oxazolidinone in the yields of 69.0%~76.0%. The side reaction had been avoided effectively by the uses of the excessive epichlorohydrin and mixed catalysts.

用3，5-二甲基苯酚和环氧氯丙烷在氢氧化钠存在下缩合生成苯氧基环氧丙烷，然后和氨基甲酸酯反应生成噁唑烷酮，采用过量环氧氯丙烷和使用混合催化剂，有效的避免了副反应的发生，提高了噁唑烷酮的产率，产率69.0%～76.0%。

When the catalyst was triethylamine, the water produced in condensation of isopropanolamine or ethanolamine and butanone was removed with benzene by water segregator, then the dichloroacetyl chloride was dropped.

利用异丙醇胺、乙醇胺、丁酮和二氯乙酰氯为原料，分别合成了两种除草剂安全剂Ⅰ∶3-二氯乙酰基-2，5-二甲基-2-乙基-1，3-噁唑烷和Ⅱ∶3-二氯乙酰基-2-甲基-2-乙基-1，3-噁唑烷。

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。

However, three isomers are obtained when [3(5)-〓-5(3)-MeS]pyrazole or[3(5)--5(3)-MeS]pyrazole reacts with 〓 in the same conditionpossibly owing to the influence of both the steric and electronic factors.

通过配体与〓的光化学反应，首次分离得到了不对称取代的双吡唑烷VIB金属配合物，但3位取代基的立体位阻减弱了双吡唑烷与〓的反应。

The results show thatthe substitutions containing sulfur atom in the pyrazole ring remarkably affectthe steric and electronic properties of the pyrazole ligands.

因此，我们研究了吡唑环上带上S原子取代基对形成双吡唑烷配体及其与VIB金属羰基配合物的光化学反应的影响。

Simultaneously we prepared benzimidazolines with two methods by the reducton of benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 9 kind of tetrahydro-β-carboline starting from carboxylic aicd and halid. A convenient synthetic method for preparing tetrahydro-β-carboline was provided.

本文以1，3-二甲基苯并咪唑碘盐和2-取代的1，3-二甲基苯并咪唑碘盐为原料，采用了NaBH_4还原和Grignard试剂加成两种方法，制备了9种1，3-二甲基苯并咪唑烷和2-取代的1，3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型，在酸性条件下，以色胺作为接受一碳转移的亲核试剂，完成9种四氢-β-咔啉类化合物的新合成方法研究。

Simultaneously we prepared benzimidazolines with two methods by the of reduction benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 13 kind of tetrahydroisoquinoline starting from carboxylic aicd and halid, gave a new idea of the synthesis for new drugs.It can make many kind ofβ-carboline alkaloids which have bioactivity to antibacterium, antivirus and antitumor to start from 1,2,3,4-tetrahydro -β-carboline.

本文以1，3-二甲基苯并咪唑碘盐和2-取代的1，3-二甲基苯并咪唑碘盐为原料，采用了NaBH_4还原和Grignard试剂加成两种方法，制备了13种1，3-二甲基苯并咪唑烷和2-取代的1，3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型，在酸性条件下，以2-(3，4-二甲氧基苯基)乙胺作为接收一碳转移的亲核试剂，完成了13种重要的四氢异喹啉类化合物的新合成方法研究。

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。