(E)-2-methyl-1-phenylpent-3-en-1-one | 120536-73-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (E)-2-methyl-1-phenylpent-3-en-1-one
• CAS: 120536-73-4
• 化学式: C₁₂H₁₄O
• 分子量: 174.243
• InChiKey: WYBHTRNEZTWMEH-XVNBXDOJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  反-1-溴-1-丙烯 、 苯丙酮 在 1,2,3,4,5-五苯基-1′-(二叔丁基膦)二茂铁 、 palladium diacetate 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 为溶剂， 反应 24.0h， 以63%的产率得到(E)-2-methyl-1-phenylpent-3-en-1-one
  参考文献：
  名称：

  Palladium-Catalyzed Alkenylation of Ketone Enolates under Mild Conditions

  摘要：

  A protocol for a mild, catalytic, intermolecular alkenylation of ketone enolates has been developed using a Pd/Q-Phos catalyst. Efficient intermolecular coupling of a variety of ketones with alkenyl bromides was achieved with a slight excess of LiHMDS and temperatures down to 0 °C.

  DOI：

  10.1021/ol5017965

文献信息

• Pd-Boron-Catalyzed One Carbon Isomerization of Olefins: Water Assisted Process at Room Temperature
  作者：Devi Prasan Ojha、Karthik Gadde、Kandikere Ramaiah Prabhu

  DOI：10.1021/acs.joc.7b00580

  日期：2017.5.5

  ne-system -catalyzed isomerization of olefins has been uncovered. An efficient catalytic combination of [Pd(OAc)2]3-boronate-PCy3-enabled olefin isomerization at 80 °C has been investigated. Addition of water to the reaction showed a remarkable improvement and the isomerization occurred at ambient temperature. These catalytic systems function efficiently for the isomerization of functionalized as well

  现已发现钯-硼酸酯/硼烷体系催化的烯烃异构化。的有效的催化组合[将Pd（OAc）2 ] 3 -硼酸-PCY 3 -启用烯烃异构化在80℃下进行了研究。向反应中添加水显示出显着的改善，并且在环境温度下发生了异构化。这些催化体系有效地用于官能化的和未官能化的烯烃的异构化。催化条件显示了非氢化物和金属氢化物介质的参与，并且可以与水作为添加剂互换。
• Ni-Catalyzed Alkenylation of Ketone Enolates under Mild Conditions: Catalyst Identification and Optimization
  作者：Michael Grigalunas、Tobias Ankner、Per-Ola Norrby、Olaf Wiest、Paul Helquist

  DOI：10.1021/jacs.5b02945

  日期：2015.6.10

  A procedure for Ni-catalyzed cross-coupling of ketone enolates with alkenyl halides has been developed. Intermolecular coupling of aromatic and aliphatic ketone lithium enolates with a variety of alkenyl halides is achieved in the presence of Ni(cod)(2) catalyst (5 mol %), an N-heterocyclic carbene (NHC) ligand, and LiI (10 mol %) at 6-22 degrees C for 0.5-12 h with yields of up to 90%. During the initial development of this reaction, a misleading result with respect to the actual active catalyst was obtained using commercially available Q:Phos ligand, which was found to contain a trace of Pd metal contaminant sufficient to catalyze the reaction. However, under the final conditions optimized for Ni(cod)(2) in the presence of an NHC ligand, Pd was incompetent as a catalyst.