环烯

Diamines are performed. An new and effective atom economy, domino reaction is developed, and 5, 6dihydro-4H-thieno [2, 3-b] thiopyran are synthesized by 4-(4-methyl-1, 3-dithiol-2-ylidene)-1, 7-diaryl-1, 6-diene-3, 5-dione

然后以4-[（4-甲基-1，3-二噻烷-2-亚甲基）-1，7-二芳基]-1，6-二烯-3，5-二酮类化合物为合成子探索稠杂环合成方法，并发现一个高效的，具有原子经济性的多米诺效应合成方法，并成功的利用其合成了一系列噻喃并噻吩衍生物。

Hydroesterification of tert-butyl alcohol with ethanol catalyzed by transition metal triphenylphosphine complexes were investigated in room temperature ionic liquids as reaction medium at 100-140℃ and 3-6MPa of CO.

首次在超强酸氯铝酸离子液体中实现了饱和烷烃的羰化反应。发现2，2，4-三甲基戊烷可直接与CO反应，产物叔丁基异丁基酮，叔丁基异丁烯基酮和3，3，5-三甲基环己酮。

In the absence of organic solvent and phase-transfer catalyst, the catalytic oxidation of cyclohexene to adipic acid with aqueous 30% hydrogen peroxide by weight can be efficiently catalyzed by tungstenic acid /inorganic acidic ligand.

以钨酸／无机酸性配体为催化体系，在无有机溶剂和相转移剂的情况下，催化过氧化氢(质量分数30％)氧化环己烯合成己二酸。

Cyclohexene ; adipic acid ; tungstenic acid ; inorganic acid ; catalytic oxidation

环己烯；己二酸；钨酸；无机酸；催化氧化

Hydrogen peroxide(H_2O_2)was used as oxidant,oxalic acid as complexing agent and tungstic acid (H_2WO_4)as catalyst.

研究了以环戊烯为原料、草酸为有机络合剂、H2O2为氧化剂，在催化剂钨酸(H2WO4)的作用下一步合成戊二酸的绿色新过程，考察了氧化剂的含量、反应物配比、催化剂用量、反应温度、反应时间等对反应的影响。

The crystal structure of the deoxygenating reaction product 1,1-dichlorotetraphenylcyclopentadienone of phenyl mercury with tetraphenylcyclopentadienone is reported.

本文报道了二氯卡宾(由一溴二氯苯基甲基汞产生)与四苯基环戊二烯酮脱氧反应产物的晶体与分子结构，并就其结构特征讨论了反应机理和产物的关系。

Firstly, the effect of solvent on the process of PO impregnation on TS-1 by the method of products impregnating was studied.

在TS-1催化丙烯环氧化反应中，溶剂或混合溶剂的各组分含量及性质对TS-1的催化活性、PO选择性以及反应后催化剂上的沉积物种类和含量的影响很大，有机溶剂的极性经验参数E_T(30)越大，催化剂活性越高。

Some of the Fe will be oxidized to Fe resulting in the formation of the blue ferrocenium salt.

纯的环茂二烯溶液是无色的。在其它有机金属化合物的制备中，要努力去减少氧气。

Some of the Fe will be oxidized to Fe resulting in the formation of the blue ferrocenium salt.

纯的环茂二烯溶液是无色的。在其他有机金属化合物的制备中，要努力去减少氧气。

The method for preventing the formation of peroxides from cyclopen-tadiene is to seal it With nitrogen.

防止环戊二烯生成过氧化物的方法，可充以氮气长期贮存。

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。