炔丙基

Functionalized propargylic dithioacetals have been applied to one-pot furan annulation to afford the corresponding functionalized oligoaryls.

中文摘要应用官能基化的炔丙基硫缩酮进行一锅式呋喃稠合反应，可产生相对应之寡联芳香环化合物。

The second part of this paper relates to the synthesis of 3(2)-fluoro-4-propargyl- benzyl alcohol.

本论文的第二部分工作是3-氟(2-氟)-4炔丙基苄醇的合成探讨。

In the thesis, the mechanism of Three-Component coupling ofα-oxyaldehyde, piperidine and phenylacetylene was analyzed.

当使用光学纯的受保护的三碳醣作为反应底物时，得到了高产率和高立体选择性的炔丙基胺。

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。

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 new olefination methods of alkyl substituted propargylic dithioacetals are described in this thesis.

中文摘要本篇论文围绕在烷基取代炔丙基硫缩醛的新型态烯化反应，可分为两部分进行探讨。

In chatpter three the mechanism of the gold-catalyzed cycloisomerization of propargylic pyridine was reported.

论文第三章将报道金催化的炔丙基吡啶衍生物的环异构化反应的机理研究结果。

The last part is concerning the new application of dialkyl-substituted propargylic dithioacetals.

第三部分则是双烷基取代炔丙基硫缩酮的新型态反应。

Using the readily available optically active propargylic amines, the corresponding -α-chloroalkylidene-β-lactams with high ee values can be synthesized conveniently.

同时我们实现了由光学活性的炔丙基胺一步法生成光学活性的β-内酰胺化合物，这不仅在学术上而且在工业合成上都将具有非常重要的意义。

A range of oligoaryls having alternating para- or meta-benzene-furan rings is synthesized by rapid convergent/divergent method from the annlation of a propargylic dithioacetal and an aldehyde having a propargylic dithioacetal moiety as the substituent.

中文摘要结合分流法/汇集法，利用炔丙基硫缩酮单体和另一具有醛基的单体进行环化反应，可以迅速合成对位及间位取代苯环呋喃交错寡聚物。

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。