查询词典 alkenes

List alkanes,alkenes,and terminal alkynes in order of decreasing acidity of their terminal C-H.

答：由大到小排列烷，烯和端炔的端碳氢键的酸性

Also included is the study of characteristics of organic compounds such as alkanes, cycloalkanes, alkyl halides, alkenes alcohols, alkynes and the practical application of these materials to everyday life.

这门荣誉课还包括有机化合物特质的研究，如烷烃、环烷烃、卤代烃，醇烯烃、炔烃和日常生活中实际应用的材料。

The result of potassium malonyloxyborohydride as a new hydroboration reagent reacts with terminal alkenes and alkynes is described.

介绍新的硼氢化试剂丙二酰氧基硼氢化钾与链端烯炔烃的作用，烯烃的硼氢化物在PTC条件下，插入∶CCl2 ，可得饱和羧酸；炔烃则难以与之硼氢化。

We are interesting in the synthesis and the application of 1,2,3-triazoles inthis paper, which including the following:In the first chapter, we reviewed mainly the development of Huisgen\'s 1,3-dipolar[3+2]-cycloaddition from organoazides and alkynes or alkenes to synthize1,2,3-triazoles in recent years.

本论文针对1，2，3-三唑的合成和应用，主要包括以下方面：第一章对近几年来1，2，3-三唑合成研究进行了概述，总结了有机叠氮和炔烃、烯烃的1，3-偶极环加成反应以及其他方法合成三唑的进展。

Seven major methods and their reaction characteristics for the synthesis of primary vicinal diamines starting from epoxides, and alkenes etc.

文摘：详细综述了从环氧化合物、烯烃等为起始原料合成一系列一级邻二胺的七条主要路线，并比较了各条反应路线的特点。

The correlation coefficients between 0X, 1X, 0X(superscript ' subscript D), 1X(superscript ' subscript D) and boiling points for 80 alkenes, 39 alkynes and 169 aliphatic unsaturated hydrocarbons were made, which were 0, 999 3, 0, 999 6, 0. 995 5, respectively and better than those of the famous Kiers index (superscript mX.

其逆指数0阶、1阶指数0X(下标 D，1X，0X，1X分别与80个单烯烃、39个单炔烃、169个不饱和烃的沸点进行相关，复相关系数依次为0.9993，0.9996，0.9955，均优于著名Kier指数(上标 mX的回归结果。

The recent application of thionly chloride in organic synthesis is reviewed, mainly focusing on the preparation of chlorinated compounds, alkenes, esters, amides, nitriles, cyclic sulfites and sulfinyl chlorides.

综述了近年来氯化亚砜在有机合成中的应用进展，主要涉及氯代化合物、烃、及酰胺、、式亚硫酸酯、磺酰氯等化合物的制备。

The kinetics model was gotten based on the alkyl mechanism, light olefins re-absorption and re-reaction. The kinetics experiment is carried out over the selected Fe-Mn-K catalyst, and the kinetics model parameters is got base on the kinetics experiment data. The parameters explain the reaction results that the carbon monoxide content is high, the methane content is the biggest of the hydrocarbon products and the olefin content is bigger than the corresponding alkenes content.

本文同时对该反应的反应机理和动力学进行了研究，以烷基机理为基础，建立了考虑烯烃再吸附和二次反应的动力学模型，并在选定的催化剂上进行了相应的动力学实验，结合动力学实验数据计算得到了相应的动力学模型参数，模型参数值解释了反应产物中CO的含量较高，以及烃类产物中CH4含量最高和烯烃含量大于相应的烷烃含量。

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。