醚的

Objective］ GC analytical method for butyl ether in the workplace air using sampling by charcoal tube was studied.

目的］ 研究炭管采集空气中丁醚的气相色谱分析方法。

The market demand and technology status of the gasoline blender —tertiary amyl methyl ether and its developmental trend in China are discussed in this paper.

介绍了汽油调合剂——甲基叔戊基醚的市场情况、技术状况及国内发展动向。

The kinetics of tertamyl methyl ether synthesis using C5 fraction of FCC gasoline was studied. The molar ratio of tertiary amylene to methanol was 1.0 and the kinetic experimental data was obtained at the temperature range from 55℃ to 90℃.

研究了FCC汽油中C5馏分合成甲基叔戊基醚的宏观动力学。C5原料与甲醇摩尔比为1/1，在温度分别为55℃~90℃时反应得到了动力学实验数据。

This paper studies the synthesis of butyl sulfide under microwave irradiation and discusses the reaction condition.

研究了二丁硫醚的微波合成及其影响因素。

Phenyl or m -tolyl selenoamides reacted with functionalized α-haloacetic acid in 1∶1 or 1∶2 molar ratio with no catalyst in various alcohols to undergo a selenium transfer reaction. This reaction in dif-ferent molar ratios furnished the same C—Se—Se—C coupling products with a special structure bis diselenide. A new and facile method for synthesis of such bis(alkoxycarbonyl-methyl) diselenides with the advantages of mild reaction conditions, high yields, easy availability of starting materials and good chemical selectivity was provided.

芳基硒代酰胺与氯乙酸在各种醇中无催化剂下以1∶1和1∶2的比例投入，发生硒转移反应，不同原料投入比下的反应生成了同一种C—Se—Se—C偶联产物——具有多功能团的二烷氧羰基甲基二硒醚，提供了一种新的合成二烷氧羰基甲基二硒醚的简便方法，且反应具有条件温和、产率高、原料易得和选择性好等优点。

The process of synthesizing wood flour polyether was studied further on the basis of previous process, and the synthesis conditions were optimized through both orthogonal experiment and one factor experiment.

在已开发的木粉聚醚合成工艺基础上进行了进一步的研究，通过加入合适反应介质和改变反应条件，将本粉液化率由原来最高的 6 5 %提高到 95 %以上，使所合成木粉聚醚的粘度完全满足了现有聚氨酯生产设备的要

Chapter 2 has analysized the conversly synthetic means of solanesol and designed novelly synthetic routes of solanesol and key intermediate Chapter 3 has summarized the preparation of trans-3-methyl-4-hydroxy (bromo-2-butenyl oxy methyl benzene In chapter 4 ,a novel technology of important intermediate(all trans-8-bromo geranyl acetate),which is suitable for industrial procedure , was found .meanwhile,an another new way has been invented ,of which the key intermediate (all trans-8-hydroxy geranyl acetate) has been produced.

第二部分分析了茄尼醇的逆合成方法，设计了一条适合于合成茄尼醇的合成路线及其重要中间体的合成路线。第三部分研究了重要中间体[Trans-3-甲基-4-羟基-2-丁烯基乙酰基(苄基，2，3-二氢吡喃基)醚]的合成新方法，找到了一条适合于工业化生产的制备反式-3-甲基-4-羟基-2-丁烯基苄基醚的新方法。第四部分研究了重要中间体[-3，7-二甲基-8-羟基-2，6-辛二烯-1-醇乙酸酯、-3，7-二甲基-8-溴-2，6-辛二烯-1-醇乙酸酯]的合成新方法，找到了一条适合于工业化生产的制备它们的新方法；同时研究了一条制备-3，7-二甲基-8-羟基-2，6-辛二烯-1-醇乙酸酯的另一新方法。

We have developed a simple and easy-handling procedure for copper-catalyzed cyanation of aryl halides using K4[Fe_6] as the cyanide source. The present procedure has ligand- and base-free advantages, and was accomplished under the conditions of exposure to the air without degassing of the solvent.4. We carried out the selective control of preparation for phenyl ether and phenol from iodobenzene with 10 mol% of Cu_2·H_2O as the catalyst under the condition of exposure to air.

这个程序有无配体无碱的好处，并能够在暴露于空气的条件下进行，溶剂也不用脱气。4、空气气氛下，用10 mol%的Cu_2·H_2O催化碘苯偶联，实现了制备二苯醚和苯酚的选择性控制：即在有(来源：Aa955BC55论文网www.abclunwen.com)机溶剂NMP中实现了碘苯直接制备二苯醚的Ullmann反应，在H2O中实现了碘苯直接制备苯酚。

This project will mass produce high purity paralytic shellfish toxins using a combination of photobioreactor, HPLC-MS and NMR approaches, and develop novel PSTs detection method based on fluorescent characteristics of crown ethers, and finally apply this product and method for PSTs monitoring in

本项目将分离纯化中国沿海典型麻痹性贝毒C1/C2，GTX1/4，GTX2/3和GTX5，运用液相色谱-质谱联用技术和核磁共振等方法定量毒素纯度和含量，制备高纯度毒素标样，建立麻痹性贝毒的大规模生物生产技术；合成筛选适宜的毒素化学传感器—冠状醚，优化毒素和冠状醚的反应体系，结合多重时间分辨荧光技术，建立麻痹性贝毒多重时间分辨荧光检测技术，并用于水产品中麻痹性贝毒的检测。

This project will mass produce high purity paralytic shellfish toxins using a combination of photobioreactor, HPLC-MS and NMR approaches, and develop novel PSTs detection method based on fluorescent characteristics of crown ethers, and finally apply this product and method for PSTs monitoring in seafoods.

本项目将分离纯化中国沿海典型麻痹性贝毒 C1/C2 ， GTX1/4 ， GTX2/3 和 GTX5 ，运用液相色谱-质谱联用技术和核磁共振等方法定量毒素纯度和含量，制备高纯度毒素标样，建立麻痹性贝毒的大规模生物生产技术；合成筛选适宜的毒素化学传感器—冠状醚，优化毒素和冠状醚的反应体系，结合多重时间分辨荧光技术，建立麻痹性贝毒多重时间分辨荧光检测技术，并用于水产品中麻痹性贝毒的检测。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。