衍生物

One pot synthesis of tetrahydroquinolines from aldehyde, aniline and enol ethers catalyzed by iodine was also applicable and provided tetrahydroquinolines in comparable yields.

在碘的催化下，从醛、苯胺和烯醇醚出发"一锅"合成了四氢喹啉衍生物，反应的产率与使用预制的亚胺进行的反应基本相同。

Additionally, the quantum chemical study on the isomeriaation mechanism of the enol ester of 2-acyl-l,3-cyclohexanedione was performed, which was discovered by Yang when he synthesized the derivate of 2-acyl-l,3-cyclohexanedione.

第三部分工作是对杨定亚在合成2-酰基-1，3-环己二酮类化合物的衍生物时意外发现的烯酯异构化反应机理进行了研究。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分"一锅"反应，获得的化学产率与使用预制的N-芳基亚胺相当。

Identify the structure of the unknown amino acid from the melting point and equivalent weight of the purified amino acid derivative.

利用已纯化的胺基酸的衍生物的等当量和熔点，可以对未知胺基酸进行结构鉴定

It's an ergot derivative.

它是麦角的一种衍生物

Leading industries of biological, chemical and nano-materials, the main products have erythritol, glucose, sodium, soy oligosaccharide-peptide, refined clothing acid, itaconic anhydride, kojic acid, kojic acid derivatives, arbutin, Calcium Citrate , sodium citrate, Apple sodium, potassium citrate, nano zirconia, long-chain dicarboxylic acid, and efficient water treatment agent non-phosphorus.

主导产业为生物化工和纳米材料，主要产品有赤藓糖醇、葡萄糖酸钠、大豆低聚肽、精制衣康酸、衣康酸酐、曲酸、曲酸衍生物、熊果苷、柠檬酸钙、柠檬酸钠、苹果酸钠、柠檬酸钾、纳米氧化锆、长链二元酸、高效无磷水处理剂。

Starch phosphate is one kind of starch derivative produced from esterification of starch and phosphate.

淀粉磷酸酯是原淀粉与磷酸盐发生酯化反应而生成的一种淀粉衍生物。

Especially 2 - hydroxy estrone (2 -hydroxyestron), in estrogen derivatives, such substances the highest reactivity, the most carcinogenic.

尤其是2—羟雌酮（2-hydroxyestron），在雌性激素的衍生物中，这种物质的反应活性最高，致癌能力最强。

Here we synthesized a CTA Z-1, 2-(oxiran-2-ylmethoxy ethane, and used it to end the ROMP reaction.

然后，我们利用酯化的方法，设计合成了叔丁基保护的降冰片烯衍生物单体。

Ethanolamine derivatives were aliphatic compounds, so the yields of cantharidinimide derivatives were only influenced by steric hindrance effect.

在与ethanolamine的衍生物反应时，因为ethanolamine是一个直链的化合物，所以产率只受到立体障碍的影响，当立体障碍越大时，产率也就越低。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。