乙酯

In this thesis, the design, synthesis and application of substituted 1,8-naphthalimides and napthopyrones conjugated with uridine, substituted 1,3,5-triazine, 1,2-dibromoethane, ethyl bromoacetate have been studied.

本论文研究了取代l，8-萘酰亚胺和萘并吡喃酮与尿苷、取代均三嗪、二溴乙烷、溴乙酸乙酯偶合和双l，8-萘酰亚胺之间偶合的设计、合成及应用。

Strain 7-12 was used as original strain through primary selection on plate. U\^ DES and NTG were choosed to continue to mutate them for 6 generations respectively.

通过平板初筛筛选出7-12作为出发菌株，以紫外线、硫酸二乙酯、亚硝基胍作为诱变剂，单一或复合诱变连续处理6代。

First, this paper reports measurements of surface tension of ionic liquid EMIES (1-ethyl-3-methylimidazolium ethyl sulfate) using the forced bubble method at 278.15 to 323.15 K and densities of EMIES using Westphal balance at 278.15 to

为此，本文以廉价工业原料合成的硫酸乙酯—1—甲基—3—乙基咪唑EMIES和对水、空气都稳定的离子液体BMIBF_4为主要对象，使用密度法和最大气泡法等实验方法对这两种离子液体及其EMIES的水溶液的性质作了如下研究工作：在278.15—338.15K范围内用Westphal天平测定了EMIES和BMIBF_4的密度，用最大气泡法测定了纯离子液体EMIES和BMIB_4的表面张力。

Tamarillo phenolics in EA layer also exhibited stronger or compatible inhibitory activity than DL-?

於乙酸乙酯层中树番茄酚类化合物在相同浓度及作用条件下，表现出比正对照组DL-？

The effect of structural variation of the solutes on their separation and retention was noted.

此外，还建立了手性农药喹禾灵和重要药物前体DL-苯丁氨酸乙酯对映体纯度的测定方法。

Three methods for the preparation of 1,2,4-trizolone~5 are provided. 22 compounds are prepared. 3, 4-disubstituted 1,2,4-trizolone-5 is prepared by reacting amide with ethyl hydrazine-fornate at 110癈 for 3h in the presence of phosphorus oxychloride, following neutralization and cyclization reaction, giving to 74.5 % yields,which is 30% more than the literature value.

以三氯氧磷为缩合剂，使酰胺和肼基甲酸乙酯在110℃反应3h，经碱中和、环化反应，合成3，4-二取代-1，2，4-三唑酮-5，两步反应总产率达74.5％，与文献报道值相比，高出了30％以上，在三唑酮类衍生物的合成方法中具有很大的突破性。

Different factors such as mole ratio of reactants, temperature and reaction time were studied by orthogonal test.

以硫酸氢钠为催化剂在高压釜中合成水杨酸乙酯，采用正交实验研究了醇酸摩尔比、温度、时间等因素对反应的影响。

In addition, we also can directly add n-BuLi or Mg powder into Cp2ZrCl2 THF solution, followed by addition of 1-azadiene, ethylacetate or DMF to produce pyrroles after hydrolysis.

另外，我们也可直接使用有机锂或镁粉还原Cp2ZrCl2，再加入单氮二烯，乙酸乙酯或DMF，水解后亦可直接产生比咯化合物。

Insertion of ethylacetate or DMF into 1-zircona-2-azacyclopent-3-ene complexes at 50 oC affords pyrroles in moderate yield when they quenched with KOH aqueous.

1-锆-2-氮-环戊-3-烯错合物在室温下可与乙酸乙酯或DMF进行插入反应，经由氢氧化钠水溶液水解后，可得到不错产率的比咯。

Synthesis and characterization of Octa polyhedral oligomeric silsesquioxanes and Poly and their polystyrene composites enhanced combustion properties.

使用正硅酸乙酯和四甲基氢氧化铵，采用水解缩合的方法制备笼型八八硅酸盐，将其作为聚苯乙烯树脂的添加剂，采用熔融共混的方法制备了TMN-POSS／PS复合材料。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。