methyl 2-acetyloct-7-ynoate | 134149-22-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: methyl 2-acetyloct-7-ynoate
• 英文别名: Methyl 2-acetyloct-7-ynoate
• CAS: 134149-22-7
• 化学式: C₁₁H₁₆O₃
• 分子量: 196.246
• InChiKey: CYTVCYOUOAIOPI-UHFFFAOYSA-N

物化性质

• 沸点：
  289.9±30.0 °C(Predicted)
• 密度：
  1.007±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  14
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  methyl 2-acetyloct-7-ynoate 在 sodium hydride 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 19.17h， 生成 methyl 2-(4-bromobenzyl)-2-(1-((tert-butyldimethylsilyl)oxy)vinyl)oct-7-ynoate
  参考文献：
  名称：

  乙炔系硅烷基烯醇醚通过金催化构建八元碳环

  摘要：

  Semihollow triethynylphosphanes合成和用作在配位体的金催化8-外-Dig的环化乙炔拴甲硅烷基烯醇醚，得到八元环的碳环（参见方案）。金-膦催化剂促进了向双环结构的环化或促进了无环分子的环化，从而形成了非稠合的碳环。Tf ＝三氟甲基磺酰基。

  DOI：

  10.1002/anie.201300265
• 作为产物：
  描述：

  甲磺酸己-5-炔基酯 、 乙酰乙酸甲酯 以68%的产率得到methyl 2-acetyloct-7-ynoate
  参考文献：
  名称：

  Formation de derives cyclopentaniques assistee par une espece hydrure de palladium : Aspects synthetiques et mecanisme

  摘要：

  In the presence of a palladium(0) complex and potassium t-butoxide, the acetylenic compounds 2 bearing in delta a nucleophilic functionality are smoothly transformed with excellent yields, either into 2,2-difunctionalized methylene cyclopentanes or into monofunctionalized 2-methylcyclopentenes. Each of these compounds can be specifically obtained depending on the choice of the experimental conditions.A set of diverse reactions involving mainly potassium hydride as the base showed clearly that HPdOtBu is not the active catalytic species which is mainly a sigma-ethynylpalladium hydride formed by the metal insertion in the acetylenic carbon hydrogen bond.

  DOI：

  10.1016/s0040-4020(01)89040-2

文献信息

• Introverted Phosphorus-Au Cavitands for Catalytic Use
  作者：Michael P. Schramm、Mao Kanaura、Kouhei Ito、Masataka Ide、Tetsuo Iwasawa

  DOI：10.1002/ejoc.201501426

  日期：2016.2

  an inwardly directed phosphoramidite-Au complex is described and a description of some of its catalytic performance. The molecular structure was determined by crystallographic analysis, which disclosed that the phosphoramidite ligand points “out” and places the complexed Au “in”. We investigated its catalytic activities and found that the inwardly directed Au is surrounded by three inert walls that provide

  描述了一种内向亚磷酰胺-Au 复合物的制备合成及其一些催化性能的描述。分子结构是通过晶体学分析确定的，这表明亚磷酰胺配体指向“外”并将络合的金置于“内”。我们研究了它的催化活性，发现向内定向的 Au 被三个惰性壁包围，这为超分子催化和反应中间体的研究提供了新的机会。
• Using Triethynylphosphine Ligands Bearing Bulky End Caps To Create a Holey Catalytic Environment:  Application to Gold(I)-Catalyzed Alkyne Cyclizations
  作者：Atsuko Ochida、Hideto Ito、Masaya Sawamura

  DOI：10.1021/ja066800c

  日期：2006.12.1

  and catalytic uses of phosphinoalkynes bearing bulky end caps at the alkyne termini, that is, tris[(triarylsilyl)ethynyl]phosphines are reported. The most salient feature of the new phosphines is the holey molecular shape possessing a deep and large-scale metal-binding cavity. The holey phosphines displayed remarkable rate enhancement in the gold(I)-catalyzed six- and seven-membered ring forming cyclizations

  报道了在炔末端带有庞大端盖的膦炔烃的合成、性质和催化用途，即三[（三芳基甲硅烷基）乙炔基]膦。新型膦最显着的特征是具有深而大尺度金属结合腔的多孔分子形状。多孔膦在金（I）催化的乙炔酮酯和 1,7-烯炔的六元和七元环形成环化中显示出显着的速率增强。有人提出，配体中的空腔迫使炔属化合物的亲核中心（烯醇或烯烃）靠近与金结合的炔烃，从而使闭环抗攻击成为可能。
• Mild and Functional Group Tolerant Method for Tandem Palladium-Catalyzed Carbocyclization-Coupling of ε-Acetylenic β-Ketoesters with Aryl Bromides and Chlorides
  作者：Wojciech Chaładaj、Sylwester Domański

  DOI：10.1002/adsc.201600175

  日期：2016.6.2

  report a new protocol for the annulative difunctionalization of acetylenes via tandem carbocyclization–coupling of ε‐acetylenic β‐ketoesters with aryl and heteroaryl bromides and chlorides catalyzed by the palladium species derived from an air‐ and moisture‐stable palladacyclic precatalyst. In the tandem process, the palladium complex combines appropriate carbophilic Lewis acidity and redox activity to catalyze

  我们报告了一种通过串联碳环化来实现乙炔的双官能双官能化的新方案，即通过空气和水分稳定的四环前催化剂衍生的钯物种催化的ε-炔属β-酮酸酯与芳基和杂芳基溴化物和氯化物的偶联。在串联过程中，钯配合物结合了适当的嗜碳路易斯酸度和氧化还原活性，以催化两个机理上截然不同的反应-亲核性将烯酸酯加成至未活化的炔烃，然后进行CC偶联。
• New Cobalt-Catalyzed Cycloisomerization of ε-Acetylenic β-Keto Esters. Application to a Powerful Cyclization Reactions Cascade
  作者：Paul Cruciani、Robert Stammler、Corinne Aubert、Max Malacria

  DOI：10.1021/jo9600619

  日期：1996.1.1

  type reaction of epsilon-acetylenic beta-keto esters to form highly functionalized methylenecyclopentanes are described. The observed regio-, chemo-, and stereoselectivities support a process of cycloisomerization which controls the relative stereochemistry of two contiguous stereogenic centers. An efficient route to the basic skeleton of the phyllocladane family has been achieved via a one-pot sequence

  描述了研究钴（I）催化ε-乙炔β-酮酸酯形成高度官能化的亚甲基环戊烷的烯型反应的全部细节。观察到的区域，化学和立体选择性支持环异构化的过程，该过程控制两个连续的立体发生中心的相对立体化学。通过一锅法环化序列已经实现了通往叶绿素家族基本骨架的有效途径：烯型，[2 + 2 + 2]，[4 + 2]。这种新的级联反应是从一个容易获得的无环多不饱和前体以完全立体选择性的方式产生六个碳-碳键和四个环。
• General Zinc-Catalyzed Conia-Ene Reactions of 1,3-Dicarbonyl Compounds with Alkynes Including the Classically Challenging Substrates under Neat Conditions
  作者：Chen-Liang Deng、Ren-Jie Song、Yi-Lin Liu、Jin-Heng Li

  DOI：10.1002/adsc.200900588

  日期：2009.12

  products has been developed by zinc-catalyzed intramolecular Conia-ene reactions of 1,3-dicarbonyl compounds with alkynes. This new route allows a wide range of dicarbonyl compounds, including the classically challenging 1,3-diesters and N,N′-disubstituted 1,3-keto amides, to be used for the Conia-ene reaction with inexpensive zinc chloride (ZnCl2) under neat conditions.

  通过锌催化1,3-二羰基化合物与炔烃的分子内Conia-ene反应，已经开发出一种简单的，多用途的新方法，可将四元环变成六元环。这种新途径允许将广泛的二羰基化合物，包括经典的具有挑战性的1,3-二酯和N，N'-二取代的1,3-酮酰胺，用于与廉价氯化锌（ZnCl 2）。