催化的

Advertising activity is a part of economic field, which plays a catalyzing part in the development of social economy. At the same time, it is a kind of social cultural activity. It advocates some consumption means and value concepts, which will guide people's life style and production means.

广告活动是经济活动领域的一部分，对社会经济的发展起到了&催化&的作用；广告活动同时又是一种社会文化活动，它所宣扬的消费方式与价值理念对人们的生活方式与生产方式有引导作用。

The coupling reactions of Suzuki between the transitional metal-catalyzed phenylo boric acid and benzene halide and the Suzuki-Type between phenylo boric acid and carboxylic acid derivatives are two kinds of important reactions in constructing C-C bond.

过渡金属催化的苯硼酸与卤代苯之间的Suzuki和与羧酸衍生物之间的Suzuki-Type偶联反应是构建C-C健的两种重要反应。

Such as,(1) Active Zincdust catalyzed the esterification reactions between benzoyl chloride and phenol or alcohol,which needed not solvent, warming and could fulfilled in a very short period (1-2min), andthe handling of the reaction mixtures was very simple. We believe it's the simplest and mosteconomic method for the synthesis of many aryl esters.

包括：(1)活性锌粉催化的酯化反应，在室温下即可反应，毋需溶剂，毋需加热，反应迅速(通常1—2分钟即可反应完全)，处理非常简便，相信目前是合成许多芳香酯最简便的方法，是一种值得加以推广的合成芳香酯的好方法。

In this thesis, we reported ZrCl_4 and BiCl_3 catalyzed hydroamination of alkenes and the synthesis of two titanium imido compounds.

本文报道了用ZrCl_4和BiCl_3催化的烯烃的氢胺化反应的研究和两个含钛氮双键络合物的合成，全文共分为三大部分： 1。

Herein we mainly discuss the asymmetric addition of terminal alkynes to aldehydes and ketones using commercially available chiral pool and their derivatives.

这篇论文论述了商业化的手性源及其衍生物配体催化的末端炔对醛和酮的不对称加成反应的研究。

The thesis focuses on developing the Palladium -catalyzed reactions initiated by acetoxypalladation of alkynes and quenched by different methods to regenerate the Pd species.

本论文立足于小组以前工作，以炔烃的乙酰氧钯化作为启动反应的方式，尝试发展Pd催化的反应和再生两价钯的新方法。

The asymmetric addition of terminal alkynes to aldehydes and ketones is an important method of synthesizing chiral propartyl alcohols and tertiary alcohols, which are important pharmaceutical intermediates.

末端炔对醛和酮的不对称加成是合成光学纯的炔丙醇和手性叔醇的重要方法，是不对称催化的重要研究课题之一。

To optimize the reaction condition for the purpose of target compounds synthesis, the advance of 1,3-dipolar cycloaddition and click chemistry is reviewed. The conditions of the reaction between azides or nitrile oxides and terminal alkynes were optimized experimentally and the best operation condition was established.

论文综述了偶极环加成反应和点击化学的进展，特别对Cu催化的腈氧化物或叠氮化物与端炔化合物之间的1，3-偶极环加成反应进行了理论分析与实验研究对反应条件进行了优化，确立了实验室中进行反应的最佳操作条件。

In chapter 3, general reaction of a-hydroxy epoxides were introduced. We have developed a newly gold-catalyzed ring opening reaction ofα-hydroxy epoxides containing carbon cycle. We have disclosed the rule of ring opening reaction. And the plausible mechanism was proposed.

第三章：首先介绍了α-羟基环氧化合物的反应，其次介绍了一个新的金催化的含碳环骨架的α-羟基环氧化合物开环反应，总结了反应规律，提出了可能的反应机理。

--Bishomomanicone, a constituent of the mandibular gland secretion of the ant M. rubida and of the oak moss oil of E. prunastri Ach. was prepared from-4-methylvalerolactone through 10 steps with the overall yield 2.9%.

R-4-甲基戊内酯经过开环、脱羧、双羟化等10步操作，以2.9%的收率合成了蚂蚁信息素--Bishomomanicone，该化合物也是橡苔精油的组成成分之一，合成中的关键步骤是Li2CuCl4催化的碘化物与格氏试剂的偶联，以及HWE反应。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。