查询词典 chloro-hydrocarbons

In CD3CN, triethylamine donated electron to 2-chloro-5-methoxy- p-benzoquinone to form charge transfer complex.

本文利用CIDNP技术对以下三个反应体系的光照反应进行了研究，提出了较为合理的反应机理解释。

Chloro-2-hydroxypropyl trimethylammonium chloride was synthesized by using trimethylamine hydrochloride and epichlorohydrin as the raw materials and anhydrous as solvent.

以无水乙醇作溶剂、三甲胺盐酸盐和环氧氯丙烷为原料合成了3-氯-2-羟丙基三甲基氯化铵，探索出最佳合成条件为：n∶n为0.95∶1，反应温度为40~50℃，反应时间为30m in，所得产品质量分数大于98%，收率达90%。

The impurities generating mechanism is explored and corresponding technical plan is provided for determining and diminishing the impurities including diphenyl methane, triphenylmethane, triphenylcarbinol, 4-methy benzophenone, 4-chloro benzophenone and etc. in order to produce high purity benzophenone.

利用化学技术、循环经济和产业生态学原理结合本生产工艺过程的特点确立包括碳循环、苯循环、工艺水循环、氯的回收循环等闭合循环技术组合，设计了光气即产即用技术、倾析分离技术、能量多级利用技术、蒸发—冷凝联用和多热源组合集成技术、二苯甲酮纯化技术等实用方案，实现经济地生产清洁的高纯度产品和生产过程废物零排放。

Furthermore, through molecular structural design, we have also synthesized stable dual functional diphenylether polymer intermediates of ABB' types possessing ortho-dicarboxylic at one aromatic ring and diamine groups at another beginning from Xylenol and 1-Chloro-3,4-dinitrobenzene as the raw materials.

中文摘要本研究应用自氧化法与氢化法两反应，成功而有劾地制备出芳香族含酸酐及二胺基之官能基单体，并进一步经由分子结构设计，从3，4-二甲苯酚及1-氯-3，4-二硝基苯为原料，转化合成出安定性高带有羧基与双胺基双官能基之堑新ABB'型二苯醚中间体，并成功地应用此中间体从事自聚合反应，而合成分歧状聚醚亚醯胺高分子。

When MAA yeast was used to catalyze other systems, such as reducing ethyl 4-chloroacetoacetate to ethyl-4-chloro-3-hydroxybutyrate and ethyl acetoacetate to ethyl-3-hydroxybutyrate, the yield also improved at various degrees.

用此酵母在水相中催化乙酰乙酸甲酯的还原，其得率较普通面包酵母要高。pH和温度对MAA酵母与普通面包酵母都有相同的影响。

Through screening lipases, lipase Novozym 435 and lipase Alcaligenes sp were found to show higher activity and better enantioselectivity for the resolution of 2-(2-chloro- 1-hydroxyethyl)thiophene. The optimal reaction conditions were finally achieved by further investigating the effects of solvents, temperature, rotation speed and enzyme concentrations.

通过对不同来源酶的筛选，找到了Novozym 435和Alcaligenes sp两种选择性较好的酶，它们均对该反应具有较高的选择性和较快的反应速度，在此基础上进一步通过对溶剂、温度、摇床转速以及酶用量的筛选，确定了能够有效拆分2-氯-1-(2-噻吩)-乙醇的较佳反应条件。

Methods Compound 3 was got via the formation of the amide from 2-chloro-3-amino-4-methyl pyridine and 2-chloronicotinoyl chloride, and then nevirapine was acquired by the aminolysis of 3 with cyclopropylamine in an autoclave, followed by the intramolecular nucleophilic substitution.

以2-氯－3-氨基－4-甲基吡啶为原料，依次与2-氯烟酰氯缩合成化合物3、再与环丙胺高压氨解、最后发生分子内亲核取代反应，成功合成了奈韦拉平。

Five quinazolinone compounds, such as 6-X-4(3H)-quinazoinone ( X=NO2,Cl,Br J) and 1 -furfuryl-6-sulfarnide-7-chloro-4( 1 H)-quinazolinone(5),were synthesized by reaction of anthranilic acids with formamide accompanied by titrating with phosphoryl chloride.

用改进后的 Niementowski反应，可使反应温度由原来的 175℃以上降至 90习5℃，甚至能在冰浴条件下制备出化合物 l－（吱哺－2－甲基）－6－磺酚胺基－7－氯什 IH）－喳哩晰酮。

Pneumoniae FH strain was cloned and the sequence was analysed by M13 DNA sequencing method. Comparing the PCR product sequcence with MP M-129 strain P1 gene, we found that there are 4 bases different. This may result from the different MP DNA templates. The maximum homology is 98.8%. The result confirmed the fidelity and specificity of the amplified target DNA segment by PCP, and suggested that two categories of MP P1 gene still exist a few differences even in the conservation region. The cloning MP DNA segment was labelled by random hexanucleotide priming, after hybridization, the probe detection was completed using an anti-digoxigenin antibody alkaline phosphatase conjugate, and the substrates 5-bromo-4-chloro-3-indolyl phosphate and nitro blue tetrazolium. This hybridization system is much superior to the radioactive probe hybridization, because it is safe, easy to handle and has no limitation of decay time. The time required for colormetic detection is also much less than the corresponding autoradiographic exposure time needed to achieve similar detection limits with 32P-labelled probes. The Dig-probes could be used repeatedly, and this made them not only much convenient to use, but also lower the cost, and worthwhile to be used popularly.

将PCR产物进行重组，并将阳性重组质粒，应用M13测序系统对产物进行DNA序列分析，并与MPM-129株P1基因核苷酸进行同源性比较，发现有4个位置的碱基发生了变化，其同源性为98.8％，证实了PCR所扩增DNA片段的准确性和特异性，同时也证实了不同MP组型的P1基因即使在保守区也存在着一定的差异，将克隆的目的DNA片段用异羟基洋地黄毒苷配基用随机引物法标记制备MP DNA探针，杂交后用碱性磷酸酶标记的抗Dig多克隆抗体与杂交体反应，再用BCIP和NBT呈色，制备MP DNA探针，鉴定所扩增片段的特异性，与同位素探针比较，Dig探针不受半衰期限制，可反复使用，而且价格低廉，值得推广使用。

Six products were formed in the reaction between N-benzylideneaniline andethyl benzoate; two products were separated from the reaction between N- benzylidene-(4-chloro) aniline and acetonitrile; and three products were afforded in the reaction between N-benzylideneaniline and benzalazine.

亚胺和苯甲酸乙酯的反应得到六个产物，和乙腈的反应得到两个产物，和苯亚甲基联氮的反应得到三个产物。

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。