环烯

To illustrate some of the features of the equilibrium phenomenon , let us look at the reaction in which cyclobutene is isomerized to 1.3-butadiene.

为了说明平衡现象，让我们看一下环丁烯异构成1.3一丁二烯的反应。

Cis-C=C configuration on 2 position is easily isomerized to trans-form in environment according to literatures, but cycloproyl do it difficut relatively. So, replacement of 2,3- allyl unit by cyclopropyl group might give a practical method to get over the problem.

为解决脱落酸2位双键在环境中易光异构化为反式结构的问题，依据电子等排体原理，将2，3-位的烯丙型的结构改变为环丙型结构，将可能解决光异构化的问题。

The analysis on fatty acid,alcohol and ketone of oil with GC-MS method indicates that the alkyl acids,especially those with linear and saturated alkyl acids,are dominant in the newly generated acids.

采用气相色谱-质谱方法，对油样提取物中微生物产生的酸、醇、酮等物质进行了分析研究，两株菌产酸以饱和烷基酸为主，尤其以直链饱和烷基酸居多，同时也生成一定量的环烷、烯基酸和少量的芳基酸。

With structure similar to that of vitamin K, Coenzyme Q10 also known as Ubiquinone 10 is a kind of fatsoluble quinone (C6H4O2), where "10" refers to the number of isoprenyl chemical subunits.

辅酶 Q10又名泛醌10，是一种脂溶性醌，其结构类似于维生素K，因其母核六位上的侧链——聚异戊烯基的聚合度为10而得名，是一种醌环类化合物。

E. . The epoxidation of cis-allylic alcohols is difficult, and with 20％mol Ti 〓 and 30％mol tartrates, up to 80％e.

的对映选择性被得到；对难于环氧化的顺式烯丙基醇，使用20％mol四异丙氧基钛和30％mol酒石酸酯得到最高80％e.e。

Insertion of ethylacetate or DMF into 1-zircona-2-azacyclopent-3-ene complexes at 50 oC affords pyrroles in moderate yield when they quenched with KOH aqueous.

1-锆-2-氮-环戊-3-烯错合物在室温下可与乙酸乙酯或DMF进行插入反应，经由氢氧化钠水溶液水解后，可得到不错产率的比咯。

Analyses of spectroscopic and crystal structural data of iridium complexesIr(PR3)Cl and the Vaska's complex reveal that NHC ligands and phosphines have a similar donating ability toward Ir metal center.

并且从光谱分析及晶体结构数据发现[Ir(PR3)Cl]的错合物与Vaska's 错合物相当类似。因此，我们推论其含氮杂环碳烯与膦化物在ㄧ价铱金属上有相似的配位能力。

In the selective oxidations, Manganese porphyrin mimic enzyme systems supported on different inorganic supports are designed and developed, which are applied in studies of green processes, such as, the selective olefin epoxidation with oxygen in either ionic liquid or water, the oxidation of alcohols.

在选择性氧化反应中，设计制备了不同无机载体的锰卟啉模拟酶体系，分别在离子液选择性和水相中开展了以氧气为氧源的烯烃环氧化、醇的氧化等绿色反应过程的研究。

We studied the number of ordinated water of polyoxometalate catalysts how to affect the catalytic activity.

2，研究了1 ， 2-二氯乙烷做溶剂，催化氧化环己烯的体系中杂多酸所含配位水的数量对催化剂活性的影响。

The complex is applied to the ring cleavage reaction of various organic boron agents to the hetero atom norbornadiene.

该类络合物适用于各类有机硼试剂对杂原子降冰片二烯的不对称催化的开环的反应。

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。