查询词典 allyl

The products are methyl vinyl ether (cis- and trans-), allyl alcohol and propen-2-ol.

计算得到的丙酮分子的5个异构化反应通道分别对应3种异构化产物，乙烯甲基醚、丙烯醇和1-丙烯-2羟基。

A resin derived from allyl alcohol that hardens when cured; used as an adhesive.

烯丙醇制成的树脂，加工后变硬，用作粘合剂。

Lightfoot et al have developed one of these iridium-based systems for the stereocontrolled synthesis of lilial by asymmetric reduction of an allyl alcohol and subsequent oxidation of the alcohol.

Lightfoot等发展了一种基于铱的系统，通过烯丙醇和第二阶段酒精氧化的不对称还原，用来进行铃兰醛的立体控制合成。

I. Alkenylcarbenium ion formation from 4 Torr allyl alcohol on zeolite HZSM-5 pretreated at 773 K. The lowest spectrum was recorded immediately after exposure to the adsorbate.

字母i。 Alkenylcarbenium 4离子形成托丙烯醇在沸石分子筛，在5预处理 773 K的最低频谱立即记录在暴露于吸附。

The latter was esterified with allyl alcohol in the presence of the catalyst toluene-p-sulfonic acid to get the title compound in the yield of 87.1%.

后者在对甲苯磺酸催化下与烯丙醇经酯化反应制得标题化合物，收率为87.1%。

Immediately after admission, the 290 nm band has disappeared and evolution of bands in the range of the di-, tri-~nd tetraenylic ions proceeds, resulting in the same final spectral pattern as when starting from allyl alcohol.

入院后立即，在290纳米带已经消失和演化的乐队在二叔，三范围届tetraenylic离子的收益，在同样的最终结果光谱格局从丙醇时开始。

Objective To investigate the differentiation of bone marrow derived Thy-1+β2M-cells into liver cells in allyl alcohol induced liver injury micro-environment.

研究表明，除了肝脏、胰腺中存在肝干细胞外，移植骨髓来源的干细胞也可在受者肝脏内分化为肝细胞和胆管上皮细胞[l，2]。

It was found that the stereoselectivity of this reaction to produce S-CHBE could be remarkably improved by pretreatment with heating and allyl alcohol.

而烯丙基溴预处理可以使反应立体选择性从通常的生成S-型产物过量转变为R-型产物过量，优化处理条件后能使R-CHBE的e.e。

Carboxylic acid was peroxidized in organic solvents catalyzed by lipase and glycidol was synthesized from allyl alcohol catalyzed by acid peroxide.

利用脂肪酶在有机介质中催化制备过氧酸，丙烯醇在过氧酸的作用下发生环氧化反应生成环氧丙醇。

At first,the intermediate of sodium 3-chloro-2-hydroxy propanesulfate was synthesized from epichlorohydrin and sodium bisulfite;And then,using NaOH as a catalyst,the title compound has been synthesized from intermediate and allyl alcohol to reach the yield of about 70%.

先由环氧氯丙烷和亚硫酸氢钠合成中间体3-氯-2-羟基丙磺酸钠，然后中间体再与丙烯醇在氢氧化钠催化下生成目标产物2-羟基-3-烯丙氧基丙磺酸钠。

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。