查询词典 method of synthesis

A method for synthesis of isobutyl acetate based on paratoluenesulfonic acid as catalyst was developed.

以冰醋酸、异丁醇为原料，对甲苯磺酸为催化剂合成乙酸异丁酯，通过正交实验考察了原料比、催化剂用量、带水剂用量和反应时间等因素对反应的影响。

Pymetrazine is chosed as the lead compound, and 21 compounds were firstly designed and synthesized. These compounds were characterized by introducing phenyl derivatives with different functional groups to replace pyridine ring with the isosteric principle and the method of homogeneous synthesis and reasonable biologically designing in order to find new compounds with potential biological activity. These compounds were confirmed by IR, H NMR and MS spectra.

本文选取吡蚜酮为先导化合物，运用电子等排理念，综合类同合成、生物合理设计的方法，引入含有不同官能团的苯基衍生物替代吡蚜酮的结构中心吡啶环，设计合成了21个未见文献报道的化合物，寻找具有潜在生物活性的新三嗪酮类化合物，通过核磁共振氢谱、红外光谱、质谱等手段进行了结构表征，并验证正确。

The simple method of one step synthesis of isoamyl isovalerate from isovaleraldehyde under aluminum isoamyloxide catalyst and ZnCl\-2 co catalyst was studied.

在自制的异戊醇铝催化剂和无水氯化锌助催化剂作用下，以异戊醛为原料一步合成出异戊酸异戊酯。

In this paper several methods including acylamide dehydration, metal cyanide replacement, etherification and isoxazole method for synthesis of 3,3-diethoxyethylcyanide were reviewed.

综述了3，3-二乙氧基丙腈的合成方法，包括酰胺脱水、金属氰化物取代、醚化和异恶唑法，用于工业化生产较为满意的合成路线是以1，1，3，3-四乙氧基丙烷为原料的异恶唑法。

In this paper,the property and method of preparation of organolithium compounds ,and their application in organic synthesis are briefly reviewed.

文章综述了有机锂化合物的性质、制备方法及其在有机合成中的应用。

The colloidal synthesis method of CdSe QDs was described in detail, and the photoluminescent...

文中给出了CdSe量子点材料的制备方法和其发光特性，探讨了如何将不同尺寸的CdSe量子点复合在一起来获得多色照明器件。

Synthesis of 5-nitrosaicylaldehyde was studied by the improved method of the Duff response with polyphosphoric acid.

张维庆，邹亮华，周诗彪，张儒祥，改进Duff反应合成5-硝基水杨醛

The synthesis method of robust model predictive control is presented for continuous-time systems with polytopic uncertainties.

运用线性矩阵不等式方法，研究连续时间多面体不确定系统的鲁棒预测控制问题。

The method of combining the root piles and static pressure grouting can be adopted to a residental building reinforcement engineering after the synthesis considering the various factor.

在综合考虑多方面因素后，认为对于某住宅楼房屋开裂加固工程，可采用树根桩及静压注浆相结合形成的复合地基技术进行加固处理，工程应用表明，根据工程实际情况合理运用复合地基进行地基加固处理能取得良好的加固效果，本工程的成功施工，对类似工程具有一定的借鉴作用。

A new method for synthesis of rosolic acid is introduced in this thesis: under solvent-free conditions, grinding the mixture containing phenol, oxalic acid and copper salt catalyst and then irradiated by MW to produce rosolic acid .

本文主要介绍了一种新的制取玫红酸的方法：在无溶剂的条件下，通过研磨将苯酚，草酸和催化剂混合均匀，再由微波作用，直接合成玫红酸。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。