烯丙基

The alkali cellulose is then treated with chloromethane and propylene oxide to produce methylhydroxypropyl ethers of cellulose.

碱性纤维素然后被氯代甲烷和丙烯氧化物处理生产出甲基羟丙基纤维素。

Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate)/clay hydrogel was copolymerized with NIPA and HEMA cross-linked by clay to form a new kind of nanocomposite hydrogel P(NIPA-co-HEMA)/clay was obtained.

以无机粘土为交联剂制备了具有温度、pH双重敏感性的聚(N-异丙基丙烯酰胺-co-甲基丙烯酸-β-羟乙酯)/粘土纳米复合水凝胶P(NIPA-co-HEMA/clay，并用红外和X衍射对其结构和形态进行了表征。

Receptor agonist ; SA4503{1?[2?（3; 4?dimethoxyphenyl）ethyl]?4?（3?phenylpropyl）piperazine}; DTG[3?di（2?tolyl）guanidine]; DHEAS ; PREGS ; learning ; memory

σ受体激动剂； 1-[2-（3； 4-二甲氧基苯基）乙基]-4-（3-苯丙基）哌嗪（SA4503）； 1； 3-二（2-甲苯基胍）；脱氢雄表酮硫酸酯；孕烯醇酮硫酸酯；学习记忆

4R,5S,6R-5,6-Bis-allyl-6-aldehyde-γ-hexanelactone I-145 was prepared from D-arabinose by six steps. Compound I-145 underwent Mukaiyama-type intramolecular aldolization to produce bicyclooctane I-147 stereospecifically.

我们以D-阿拉伯糖为起始原料，经六步反应，得到(4R，5S，6R)-5， 6-二烯丙氧基-6-醛基-γ-己酸内酯I-145，然后I-145发生分子内的Mukaiyama式aldol缩合反应，完全立体专一性地得到环化中间体I-147。

Titanium silicalite 1(TS 1)with different crystal size s were synthesized in the system of TPABr n butylamine by adjusting the formation of gel and the method of crystallization.

在四丙基溴化铵正丁胺体系中合成不同晶粒大小的TS 1沸石，采用IR、XRD UV Vis、SEM、2 7AlMASNMR对其进行表征，并以丙烯环氧化反应为探针考察其催化性能。

In the present study,a novel microgel was designed by the incorporation of temperature sensititive N-isopropylacrylamide and pH sensitive acrylic acid to copolymerize with glucosamine derivative,acrylamido-2-deoxy-glucose. The novel microgel has favorable biocompatibility,tissue-targeting and stimuli-responsibility to pH and temperature.

本文利用具有生物相容性的氨基葡萄糖单糖衍生物、具有温敏性的异丙基丙烯酰胺及具有pH敏感性的丙烯酸共聚得到了全新的微凝胶，新型微凝胶具有良好的生物相容性、组织靶向性和对温度、pH的刺激响应性。

The reaction with propargyl sulfide gave a mixture of allenic sulfide and furan.The former is the [2,3]-sigmatropic rearrangement product,while the latter is derived from the furt...

同样条件下与炔丙基硫醚的反应则生成[2，3]-σ重排产物联烯和呋喃衍生物，后者是联烯进一步在Ru作用下重排的产物。

The beta-thioalkoxyalcohols could be obtained in good yields by the reaction of dialkyl-substituted propargylic dithioacetals with a series of carbonyl compounds.

我们发现在铁触媒和格林那试剂的存在下，利用双烷基取代炔丙基硫缩酮和羰基化合物反应生成的beta-硫烷氧基醇，可以进行不常见的beta-氧消去反应，而得到烯炔衍生物。

These results show that the ring expansion of cyclopropylsilylene C3H5SiH to silacyclobutene is easy to occur with a barrier of 113.4kJ/mol, while the 1,2-H shift is not competitive to the ring expansion for its much higher barrier.

结果表明，环丙基硅烯经过113.4kJ/mol的势垒扩环重排为硅杂环丁烯为自发反应；而其1，2-氢迁移重排反应热垒为190.0kJ/mol，是非自发反应，难于进行，不能与扩环重排相竞争。

The surface activity and micelle behavior of the copolymers in aqueous solution were deterimned by surface tension methods.

在水溶液中，聚N-异丙基丙烯胺大分子随著温度升高会产生分子链的折叠，它的最低临界溶解温度为3236℃﹝4﹞，即在低于LCST时，它能完全溶解于水溶液中，而在LCST之上，则会产生沉淀。

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。