丙烯基

While the basicity of the N-atom is stronger, more active second generation catalyst is indispensable and the temperature needs to be reached 150℃, and mixture of pyrrolidine and pyrrole was gained.

研究结果表明微波辐射条件下氮原子的碱性强弱对于二烯丙基胺发生关环复分解反应具有很大的影响：当底物的碱性比较强时，必须使用活性更高的第二代Grubbs催化剂，且温度需升至150℃反应才能顺利发生，得到光学纯吡咯啉和吡咯的混合物。

To observe effect of receptor ligand on subcelluar distribution of liposome was found that alprenolol liposomes was increased in mitochondria and sarcolemma,especially in nuclei(8 fold increased), as compared with blank liposome.

观察受体配基对脂质体在心肌亚细胞器中分布的影响，结果发现，烯丙洛尔掺入脂质体，使脂质体在细胞核、线粒体和肌膜的分布增加，尤其在细胞核增加最明显，较空白脂质体增多了8倍。

The flow rate: 0.5 mL min^(-1), column tempera ture: 30 ℃, HPLC chromatogram: 230 nm. Contents of sinigrin in 20 kinds of rapeseed were determined.

结果表明，烯丙基硫苷HPLC分离检测的最佳条件为：流动相：甲醇：水0.005 molL^(-1 KCl=9：91；流速：0.5mLmin^(-1)；柱温：30℃；检测波长：230nm。

Liquid-phase epoxidation of allyl chloride with hydrogen peroxide was carried out over Ti-MWW, a novel titanosilicate with the MWW structure, to synthesize epichiorohydrin selectively and effectively. Ti-MWW proved to be superior to the conventional TS-1 catalyst in both catalytic activity and product selectivity. Ti-MWW prefers aprotic solvents of acetone and acetonitrile, both of which can restrain the solvolysis of epichiorohydrin, whereas TS-1 favors a protic solvent of methanol.

研究了具有MWW结构的新一代钛硅分子筛Ti-MWW催化剂对烯丙基氯液相环氧化高效合成环氧氯丙烷的催化性能结果表明，Ti-MWW的催化活性以及产物选择性均优于传统的钛硅分子筛TS-1，对于Ti-MWW，合适的溶剂为非质子性溶剂丙酮和乙腈，在该溶剂中环氧化物不易发生溶剂化开环反应；而对于TS-1，合适的溶剂是质子性溶剂甲醇，但甲醇可导致醇醚副产物的生成。

Selenium, sulfur and other organic compounds in vegetables: onions, garlic is rich in sulfur, selenium and "sulfonyl allyl cysteine," can help the liver detoxify and prevent liver cancer.

五、含硒、硫等有机化合物的蔬菜：葱、蒜含丰富的硫、硒及「磺烯丙基半胱氨酸」，能帮助肝脏解毒及防止肝癌发生。

Methods Naloxone was synthesized starting from oxidation of thebaine, followed by hydrogenation, acylation, cyanidation, O-demethylation, hydrolyzation and N-allylation. The alternative method of O-demethylation, methane sulfonic acid/DL-methionine and hydrobromic acid were investigated.

在以蒂巴因为原料，经氧化、氢化、酰化、氰化、去氧甲基、水解、N-烯丙基化得到纳洛酮的合成路线中，分别采用甲磺酸／DL-甲硫氨酸和氢溴酸代替三溴化硼进行去氧甲基化和后续水解反应。

Via comprehensive computations, the possibilities of vinylidene and allene intermediates were excluded, and the reaction mechanism was found to contain the following three steps:(1) gold-catalyzed cyclization to give the cyclic intermediate,(2) the cyclic intermediate undergoing a 1,3-H migration to give a more stable intermediate, with the assistance of water-cluster,(3) finially, the 1,2-H or 1,2-silyl migration occuring for generation of the observed product.

通过对各种可能的反应路径的进行计算和比较，排除了亚甲基卡宾和连二烯中间体的可能性，并确定该异构化反应机理包含以下三个步骤：（1）炔丙基吡啶反应在金催化条件下发生分子内的成环得到环状中间体；（2）环状中间体在水分子簇的协助下优先发生1，3-氢迁移反应，异构化得到更为稳定的中间体；（3）最后再进行1，2-氢迁移或是1，2-硅烷基团迁移即得到实验中所观察到的环异构化产物。

Objective To research the effects of a chiral aminoalcohol in the asymmetric allylation of acylhydrazones.

目的 研究手性氨基醇在酰腙不对称烯丙基化反应中的促进作用。

The activation energy and rate constant of the allylation reaction was calculated in virtue of kinetic study.

进行了动力学研究，获得了反应活化能和各反应温度下的反应速率常数，同时研究结果表明烯丙基化反应级数为2，反应机理为S(来源：A16BC论文网www.abclunwen.com)N2 亲核取代反应。

Last, we studied the allylation of benzoylhydrazones with allyltrichlorosilane.

在研究过程中，发现了一个C=N双键烯丙基化的新方法，和苯甲酰肼的新的合成方法。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。