查询词典 carboxylic acid

In the second chapter, a series of 6-aromatic amine carbonyl pyridine-2-carboxylic acid ligands have been designed, synthesized and characterized.

第二章报道了一系列新型6-位取代的吡啶-2-甲酸衍生物有机配体的分子设计、合成，并用元素分析、红外吸收光谱、核磁共振谱、质谱等方法进行了组成和结构分析。

During the study, we improved the condensation condition of the carboxylic acid and the amine, which increased the overall yield by 9 times.

我们从哌嗪出发经取代、还原、烷基化、酰化、还原和磺酰化，共经十三步反应完成地拉韦定的全合成。

Waste minimization in ammonolysis process of O,O-dimethylphosphorochloridothioate;2. An Investigation on the Micelle-Catalytic Hydrolysis and Ammonolysis of Carboxylic Acid Esters;3. The final product is generated by ammonolysis of the compound under high pressure.

以4-溴-1，8-萘酐为原料，用2，4-二甲基苯胺在醋酸中与之反应得到N-2′，4′-二甲基苯基-4-溴-1，8-萘酰亚胺，然后将NDNA在高压下用氨水进行氨解得到最终产品。

Carboxylic acid is widely found in nature, a large class of organic compounds to benzene containing one or more carboxyl for its features.

羧酸是广泛存在于自然界的一大类有机化合物，以含一个或多个羧苯为其特征。

Product 11 was transformed to the 2,6-difluoropyridine-4-carboxylic acid (12; 87%) by consecutive halogen/metal permutation and carboxylation.

产品11个，转化为2，6 -二氟- 4 -羧酸（12； 87％）的连续卤素/金属置换和羧化。

Preferably the resin contains at least one acidic group and more preferably at least one carboxylic acid group.

最好的树脂至少包含一个酸性组和更多的最好至少一羧酸组。

NEW CARBOXYLIC ACID DERIVATIVES, THEIR PREPARATION AND THEIR USE

新的羧酸衍生物，其制备和应用

Building block of proteins; containing an amino group and a carboxylic acid group.

组成蛋白质的基本单位，含有一个氨基和一个羧酸基。

Fat A triglyceride of a long-chain carboxylic acid that is solid below 20℃.

脂肪：一种长链羧酸的甘油三酯，20℃以下为固态。

A preferred carboxylic acid monomer for making polyurethanes is dimethylol propanoic acid.

阿首选制造聚氨酯羧酸单体二羟甲基丙酸。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。