oct-1-yn-7-one | 16737-04-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: oct-1-yn-7-one
• 英文别名: oct-7-yn-2-one
• CAS: 16737-04-5
• 化学式: C₈H₁₂O
• 分子量: 124.183
• InChiKey: REYJZHHJFVWMSE-UHFFFAOYSA-N

物化性质

• 沸点：
  80 °C(Press: 17 Torr)
• 密度：
  0.877±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  oct-1-yn-7-one 生成 1-(2-甲基-1-环戊烯基)乙酮
  参考文献：
  名称：

  不饱和脂肪酸的热解和光解－IX：羰基化合物非饱和的：羰基化合物的热环化，乙酰基和丙烯醛的热环化。氢分子内分子转移的热循环

  摘要：

  线性ɛζ炔属酮的热分解18，22和25得到的环酮的优异的产率19和20，23和26分别。以相同的方式，-ζ-烯醛27和33给出了相应的甲酰基环戊烷28和29和35，但是在这种情况下，反应显得更加困难。讨论了烯基羰基化合物和相关体系的热环化过程（A），以及环状类似物的热裂解（B），所有这些重排均涉及分子内氢转移。

  DOI：

  10.1016/s0040-4020(01)90982-2
• 作为产物：
  描述：

  7-oxo-octanal 在 全氟丁基磺酰氟 、 (叔丁基亚氨基)三(吡咯烷)膦 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以64%的产率得到oct-1-yn-7-one
  参考文献：
  名称：

  Convenient synthesis of non-conjugated alkynyl ketones from keto aldehydes by a chemoselective one-pot nonaflation—base catalyzed elimination sequence

  摘要：

  Keto aldehydes were selectively converted to non-conjugated alkynyl ketones possessing an unsubstituted alkyne terminus using one-pot nonaflation-base catalyzed elimination reaction sequences. Consecutive one-pot nonaflation of keto aldehydes with perfluorobutane-l-sulfonyl fluoride and elimination of the nonaflyl group using the P(1) phosphazene base resulted in the formation of a terminal C C triple bond with the keto group remaining intact. Careful optimization of the reaction conditions enabled a highly chemoselective conversion of the aldehyde function in the presence of unprotected keto groups exploiting a minor difference in acidity of their alpha-hydrogen atoms. Scope and limitations of the protocol as well as possible implementation of these substrates in Sonogashira coupling were explored. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.05.095

文献信息

• Nickel-Catalyzed Cyanation of Aryl Halides and Hydrocyanation of Alkynes via C–CN Bond Cleavage and Cyano Transfer
  作者：Hui Chen、Shuhao Sun、Yahu A. Liu、Xuebin Liao

  DOI：10.1021/acscatal.9b04586

  日期：2020.1.17

  methods to prepare aryl nitriles and vinyl nitriles from aryl halides and alkynes, respectively. Using inexpensive and non-toxic 4-cyanopyridine N-oxide as the cyano shuttle, the methods provide an efficient approach to prepare aryl cyanides and vinyl nitriles under mild and operationally simple reaction conditions with a broad range of functional group tolerance. In hydrocyanation of alkynes, the method

  我们报告镍催化氰化和氢氰化方法分别从芳基卤化物和炔烃制备芳基腈和乙烯基腈。使用廉价且无毒的4-氰基吡啶N-氧化物作为氰基梭，该方法提供了一种在温和且操作简单的反应条件下制备具有宽泛官能团耐受性的芳基氰化物和乙烯基腈的有效方法。在炔烃的氢氰化中，该方法表现出良好的区域选择性，可控方式主要产生E或Z烯基腈，而分别以内部二芳基炔烃和末端炔烃为底物时，则仅产生马尔可夫尼科夫乙烯基腈。
• In situ intramolecular catalytic 1,2-addition of allenoates to cyclic ketones towards polycyclic allenoates
  作者：Clément F. Heinrich、Michel Miesch、Laurence Miesch

  DOI：10.1039/c4ob02451f

  日期：——

  Sequential deprotonation, isomerization of 3-alkynoates and subsequent 1,2-addition led to bicyclic allenoate in the presence of a catalytic amount of Cs2CO3. Cyclization proceeds in a totally stereoselective manner in the case of the two-carbon linker chain. A one-pot reaction starting from alkynyl ketones afforded tricyclic fused ring systems with good yields.

  在催化量的Cs 2 CO 3存在下，连续的去质子化，3-链烷酸酯的异构化以及随后的1,2-加成导致双环烯丙酸酯。在二碳连接子链的情况下，环化以完全立体选择性的方式进行。从炔基酮开始的一锅反应得到具有良好收率的三环稠合环系统。
• Temporal separation of catalytic activities allows anti-Markovnikov reductive functionalization of terminal alkynes
  作者：Le Li、Seth B. Herzon

  DOI：10.1038/nchem.1799

  日期：2014.1

  There is currently great interest in the development of multistep catalytic processes in which one or several catalysts act sequentially to rapidly build complex molecular structures. Many enzymes—often the inspiration for new synthetic transformations—are capable of processing a single substrate through a chain of discrete, mechanistically distinct catalytic steps. Here, we describe an approach to emulate the efficiency of these natural reaction cascades within a synthetic catalyst by the temporal separation of catalytic activities. In this approach, a single catalyst exhibits multiple catalytic activities sequentially, allowing for the efficient processing of a substrate through a cascade pathway. Application of this design strategy has led to the development of a method to effect the anti-Markovnikov (linear-selective) reductive functionalization of terminal alkynes. The strategy of temporal separation may facilitate the development of other efficient synthetic reaction cascades. Multifunctional catalysts typically process substrates and intermediates concurrently. Here, a strategy is described to separate catalytic activities in the time domain (temporal separation). Application of this strategy has led to the development of a method to effect the anti-Markovnikov reductive functionalization of terminal alkynes; such an approach may facilitate the development of other synthetic reaction cascades.

  目前，发展多步催化过程备受关注，其中一个或多个催化剂按顺序作用，以快速构建复杂分子结构。许多酶——通常是新合成转化的灵感来源——能够通过一系列离散的、机制上不同的催化步骤处理单一底物。在这里，我们描述了一种通过催化活性的时间分离来模拟这些自然反应级联的效率的方法。在这种方法中，单一催化剂按顺序展现多种催化活性，从而允许有效地通过级联路径处理底物。该设计策略的应用促成了一种方法，以实现末端炔烃的反马尔科夫尼科夫（线性选择性）还原官能化。时间分离的策略可能会促进其他高效合成反应级联的发展。多功能催化剂通常同时处理底物和中间体。在这里，描述了一种在时间领域分离催化活性的策略（时间分离）。该策略的应用促成了一种方法，以实现末端炔烃的反马尔科夫尼科夫还原官能化；如此方法可能会促进其他合成反应级联的发展。
• Palladium(0)-catalyzed thioboration of terminal alkynes with 9-(alkylthio)-9-borabicyclo[3.3.1]nonane derivatives: stereoselective synthesis of vinyl sulfides via the thioboration-cross-coupling sequence
  作者：Tatsuo Ishiyama、Kohichi Nishijima、Norio Miyaura、Akira Suzuki

  DOI：10.1021/ja00069a020

  日期：1993.8

  The addition of 9-(alkylthio)-9-borabicyclo[3.3.1]nonanes (9-(RS)-9-BBN) 1 to terminal alkynes was catalyzed by Pd(PPh 3 ) 4 3 mol %) to produce 9-[(Z)-2-(alkylthio)-1-alkenyl]-9-BBN derivatives 2 in high yields. The reactions were highly regio- and stereoselective, and their conditions were sufficiently mild that a variety of functionalized alkenylboranes 2 with defined stereochemistry were readily

  9-(烷硫基)-9-硼双环[3.3.1]壬烷(9-(RS)-9-BBN) 1 加成到末端炔烃由Pd(PPh 3 ) 4 3 mol %)催化产生9- [(Z)-2-(烷硫基)-1-烯基]-9-BBN 衍生物 2 的收率很高。这些反应具有高度的区域选择性和立体选择性，并且它们的条件足够温和，可以很容易地合成各种具有确定立体化学的官能化烯基硼烷 2。硼烷 2 在与甲醇进行质子分解以产生硫醇与 1-炔烃、2-（烷硫基）-1-烯烃 3 的马尔科夫尼科夫加合物时表现出异常高的反应性。本反应的合成效用由区域选择性和立体选择性反应证明-通过钯催化的硫代硼化-交叉偶联序列合成烯基硫化物 7
• In search of constrained FTY720 and phytosphingosine analogs as dual acting anticancer agents targeting metabolic and epigenetic pathways
  作者：Jean-Baptiste Garsi、Lorenzo Sernissi、Vito Vece、Stephen Hanessian、Alison N. McCracken、Grigor Simitian、Aimee L. Edinger

  DOI：10.1016/j.ejmech.2018.09.043

  日期：2018.11

  compounds containing pyrrolidine and pyrrolizidine cores with appended hydrophobic substituents were prepared as constrained analogs of FTY720 and phytosphingosine. The effect of these compounds on the viability of cancer cells, on downregulation of the nutrient transport systems, and on their ability to cause vacuolation was studied. An attempt to inhibit HDACs with some phosphate esters of our analogs

  制备了一系列含有吡咯烷和吡咯里西啶核心并附加疏水取代基的化合物作为 FTY720 和植物鞘氨醇的受限类似物。研究了这些化合物对癌细胞活力、营养转运系统下调及其引起空泡形成的能力的影响。我们尝试用我们类似物的一些磷酸酯抑制 HDAC，但由于我们未能重现报道的 FTY720-磷酸盐的抑制作用而受阻。