环戊烯

The biosynthesis of coenzyme Q10 in microorganism has two pathways: the quinoid nucleus biosynthesis and the isoprenoid side chain biosynthesis.

辅酶Q10在微生物体内的合成分为芳香环的合成和异戊烯基侧链的合成。

The effects of reaction temperature, phase transfer agent and the concentration of rhodium catalyst were examined.

研究了采用水溶性铑膦络合催化体系对双环戊二烯的氢甲酰化反应，考查了反应温度、相转移剂CTAB、铑催化剂浓度等对反应的影响。

Accordingly, in the original reaction (formation of B from cyclopentadiene and benzoquinone) Diels and Alder found only one of the following six conceivable stereoisomers of B.

因此，在该原始反应中(即通过P-苯醌和过量的环戊二烯生成B)，Diels and Alder发现在他们推测的六个立体异构中，只有一个出现。

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。

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。

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。

In this paper, the thermally reversible crosslinking reaction and the properties of synthesized TPE based on the reactions of chlorine containing polymers such as PVC , chlorined polyethylene , epichlorohydrin rubber and acrylic rubber with salts of dicyclopenladienyl dicarboxylate crosslinking agents were studied.

本研究以环戊二烯二酸盐衍生物作热可逆共价交联剂，通过与聚氯乙烯、氯化聚乙烯、氯醚橡胶和丙烯酸酯橡胶等含氯聚合物的脱MX酯化反应来实现共价关联，并制取相应的新型TPE。

The cyclic dipentene in C 5 raw material was taken off by heat polymerization .

以大庆石化总厂C5馏分为原料，经热聚工艺脱除环戊二烯，采用自制络合AlCl3 催化剂，合成了浅色C5石油树脂。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失