苯并

Firstly, 24 chiral Schiff base ligands were prepared and evaluated for theasymmetric HDA reaction between Brassard diene with benzaldehyde. Theresults revealed that the ligand derived from 3,5-di-tert-butylsalicylaldehydewith (1R,2S)-2-amino-1,2-diphenyl-1-ethanol shows an excellent chiralinduction in the reaction.

首先合成了 24 个手性三齿席夫碱配体，并应用于 Brassard 二烯与苯甲醛的不对称 Hetero-Diels-Alder 反应，结果表明，3，5-二叔丁基水杨醛与(1R，2S)-1，2-二苯基-2-氨基-乙醇生成的单席夫碱显示出优秀的手性诱导能力。

In a static photocatalytic reactor,the gas-phase adsorption and photocatalytic degradation of benzene and butyraldehyde over the two photocatalysts were studied,and the intermediates and products were detected by gas chromatography.

利用溶胶-凝胶并水热处理法制备了TiO2光催化剂和TiO2/AC复合光催化剂，在静态光催化反应器中研究了苯和丁醛的气相吸附和光催化降解，利气相色谱分析确定了生成的中间体。

The effect of styrene-butadiene latex on the water absorption ratio and the carbonization depth of cement mortar were studied.

研究了丁苯乳液对水泥砂浆吸水率及碳化深度的影响，并提出了吸水率、碳化深度的多因素预测模型。

In this study, the electrical conductive composites (comprised of thermoplastic matrix resins-high density polyethylene, polyphenylene sulfide and polyarylethersuifone with cardo group, and conductive fillers-short carbon fiber, carhon black and graphite) are prepared and characterized in detail. The relation among composite structure and directalternating electric properties, some electric and magnetic parameters under X-band microwave and shielding effect, the mechanical behaviour are analysed. And furthermore, some relative experimental devices are developed.

本工作利用短切碳纤维、炭黑、石墨为导电填料填充热塑性树脂高密度聚乙烯、聚苯硫醚、酚酞型聚芳醚砜，制得具有良好导电性能和机械性能的导电性高分子复合材料，并以此为对象，研究了材料的稳恒电场和交变电场的基本特性与材料结构的关系，研究了在X波段微波场下的电磁参量及屏蔽效应，以及研究了复合材料及其基体树脂的力学行为，与此同时还建立了相应的表征测试手段。

The effects of mefenacet on catalase activity in soil and soil respiration was studied.

通过模拟实验研究了水稻除草剂苯噻苯胺对土壤中过氧化氢酶活性及对土壤呼吸作用强度的影响，并研究了其在不同条件下水解和光解的效果。

A new collector with chelate-ability,diphenyl α-(3-phenylthioureido) alkanephosphonate,is synthesized,and the collecting performance for cerussite ,calcite and quartz,and the relationship between property and structure are investigated, and the depressor function of pyrogallic acid are also studied.

合成具有螯合性能的新型捕收剂———-α(3-苯基硫脲基)烃基膦酸二苯酯，研究该系列化合物对白铅矿、方解石和石英的捕收能力以及结构和性能的关系，并考查焦性末食子酸的抑制作用。

And the optimum pH was 4-6 for the dechlorination reaction of 2,4-D, and pH between 2 and 8 were all suited for the reaction in Pd/Fe systems. Intermediate and final products of 2,4-D, HCH and chlordane with Pd/Fe were determined by GC/MS, and the possible dechlorination pathways were concluded: 2,4-D can be converted to phenoxyacetic acid through gradual hydrogenolysis, and HCH can be transformed to cyclohexatriene through dichloroelimination or dehydrochlorination.

通过GC/MS定性定量分析了三种目标污染物在Pd/Fe体系中发生还原脱氯反应过程中的反应物及最终产物，并根据反应产物推测分析了这三种有机污染物在催化还原反应体系中可能的反应途径：2，4-D主要通过逐级氢解最终生成彻底脱氯产物苯氧乙酸；而六六六则可能通过逐步双氯消除反应或脱氯化氢反应，最后生成环己三烯。

"Chlordiazepoxide:a benzodiazepine drug, CHClNO, whose hydrochloride is used as an antianxiety drug and in the treatment of chronic alcoholism and alcohol withdrawal."

甲氨二氮，利眠宁：一种苯二氮？镇静药，CHClNO，其氢氯化物成分用作抗忧虑剂，并可用作慢性酒精中毒的治疗和戒酒。

It is noted that the effects of substitution on the C-Cl BDE of substituted chlorobenzene compounds are very insignificant.

研究了目标化合物的前线轨道能级差，并对取代氯苯化合物的热稳定性做了评估。

METHODS: Inexpensive quinine and cinchonine were transformed to 9NH2quinine and 9NH2cinchonine, which reacted with 4chlorobenzoyl chloride to afford 2 novel chiral ligands. The AD reactions of olefins were performed in H2OtBuOH (1∶1) using the 2 ligandsK2OSO24 as catalysts.

以价廉易得的奎宁和辛可宁为原料，经过结构转换得到9氨基奎宁和9氨基辛克宁，进而与对氯苯甲酰氯反应制得两种新型手性配体，并将其用于锇催化的烯烃的不对称双羟化反应。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。