查询词典 selective

The selective hydrogenation of crotonaldehyde to crotyl alchol was carried out over finely dispersed polyvinylpyrrolidone-stabilized ruthenium clusters.

以聚乙烯吡啶烷酮稳定的钌纳米金属簇为催化剂，进行了巴豆醛的选择性催化氢化。

After co-culture, selective differentiation and regeneration, resistant crowtoe plants were obtained.

经过共培养、筛选分化、再生，得到百脉根抗性植株。

Great progress in benzene selective hydrogenation to cyclohexene has been made in recent years. So it was very important for research and development of its downstream products.

摘 要：近年来我国在苯选择加氢制取环己烯的研究领域取得了很大的进展，环己烯下游产品的开发研究具有十分重要的意义。

Selective hydrogenation of benzene to cyclohexene over Ru is the best method to obtain cyclohexene.

苯选择加氢合成环己烯的方法是大批量获得环己烯的最佳方法。

The preparation and characterization of a novel Ru-Zn catalyst for selective hydrogenation of benzene to cyclohexene have been carried out in this paper.

苯选择加氢制环己烯具有原子经济性和环境友好等特点，开展苯选择加氢制环己烯催化剂的研究具有重要的应用价值和一定的学术意义。

Some kinetic parameters of the selective hydrogenation of benzene to cyclohexene such as reaction order and rate constant in each step were obtained.

在此基础上建立了苯选择加氢制环己烯各步反应的动力学方程，并对动力学方程进行了验证

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich reaction and selective reduction.

方法以环戊酮为起始原料，通过Stork烯胺反应、Mannich反应、选择性还原制备目标化合物；以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich condensation, amine exchange and selective reduction. Xylene-induced mice ear edema assay was used to evaluate their anti-inflammatory activity.

以环戊酮为起始原料，通过Stork烯胺反应、Mannich缩合反应、胺交换反应和选择性还原制备目标化合物；以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich condensation , amine exchange and selective reduction. Xylene-induced mice ear edema assay was used to evaluate their anti-inflammatory activity.

以环戊酮为起始原料，通过Stork烯胺反应、Mannich缩合反应、胺交换反应和选择性还原制备目标化合物；并以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

It could be synthesized by a key intermediate 2-pentylidene cyclopentanone formed a condensation starting from cyclopentanone and n-valeraldehyde, followed by isomerization, Michael addition and a selective decarboxylation.

本文研究了以正戊醛和环戊酮为基本原料，经缩合反应、异构化反应、Michael加成反应和脱羧反应等制备二氢茉莉酮酸甲酯的化学合成方法和工艺。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。