环烯

In Chapter two, a series of compounds incorporating amide andπ-conjugate moiety were designed, in which only cyclohexyl amide based diarylethenes were able to form stable organogelators.

第二章：设计一系列含酰氨、π共轭体系的二芳烯化合物，其中以环已二酰氨为母体的化合物在有机溶剂中能形成稳定的凝胶。

Because of the instability of the cyclopentadiene monomer, it must be used immediately after distillation in the preparation of ferrocene.

由于环茂二烯单体是不稳定的，在蒸馏后必须立即用作制备二茂铁。

Because of the instability of the cyclopentadiene monomer, it must be used immediately after distillation in the preparation of ferrocene.

由於环茂二烯单体是不稳定的，在蒸馏后必须立即用作制备二茂铁。

Because of the instability of the cyclopentadiene

由于环茂二烯单体是不稳定的

I cyclopentadiene companies from the methylation of MMT to the synthesis, entirely by domestic procurement of raw materials, in the "quantity" can be fully guaranteed for production.

我公司从环戊二烯的甲基化到MMT的合成，原料完全由国内采购，在&量&上可完全保证生产所需。

Cyclopentadiene monomer is not stable and undergoes spontaneous Diels-Alder addition to produce the dimer and higher polymers.

环茂二烯单体是不稳定的，它会自发进行Diels-Alder加成反应，产生二聚体和更高的多聚体。

All of these products have the carbon-carbon linkage to the cyclopentadiene ring.

由^1H NMR、IR、元素分析等确认R和环戊二烯上碳直接相连，具有典型的碳碳连结。

The anion of cyclopentadiene rapidly decomposes in air, and iron chloride although reasonable stable in

环茂二烯阴离子在空气中会迅速分解，虽然氯化亚铁在固态时还算稳定，但是它在溶液中很容易被氧化

Using the syringe, inject 0.30 mL of freshly prepared cyclopentadiene into the vial containing the potassium hydroxide.

用一个注射器，把0.30Ml新鲜制得的环茂二烯注入一个内有氢氧化钾的样品瓶中。。

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。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。