1-(4-fluorophenyl)vinyl benzoate | 1186122-78-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 1-(4-fluorophenyl)vinyl benzoate
• 英文别名: 1-(4-Fluorophenyl)ethenyl benzoate；1-(4-fluorophenyl)ethenyl benzoate
• CAS: 1186122-78-0
• 化学式: C₁₅H₁₁FO₂
• 分子量: 242.25
• InChiKey: DVILZKMNBPFQED-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-(4-fluorophenyl)vinyl benzoate 在 C₄₇H₅₈O₃P₂Rh⁽¹⁺⁾*BF₄^(1-) 、 氢气 作用下， 以 二氯甲烷 为溶剂， 40.0 ℃ 、400.01 kPa 条件下， 反应 24.0h， 以99%的产率得到
  参考文献：
  名称：

  Asymmetric Hydrogenation of 1-Alkyl and 1-Aryl Vinyl Benzoates: A Broad Scope Procedure for the Highly Enantioselective Synthesis of 1-Substituted Ethyl Benzoates

  摘要：

  The enantioselective hydrogenation of enol esters of formula CH2=C(OBz)R with rhodium catalysts based on phosphine phosphite ligands (P-OP) has been studied. The reaction has a broad scope, and it is suitable for the preparation of products possessing a wide variety of R substituents. For the cases where R is a primary alkyl, high catalyst activity (S/C = 500) and enantioselectivities (95-99% ee) were obtained with a catalyst characterized by an ethane backbone and a PPh2 fragment. In contrast, for R = t-Bu, a catalyst possessing a benzene backbone provided the best results (97% ee). Derivatives with a cycloalkyl R substituent were particularly difficult substrates for this reaction. A broader catalyst screening was required for these substrates, which identified a catalyst possessing a P(m-xylyl)(2) fragment as the most appropriate one, affording enantioselectivities between 90 and 95% ee. Outstanding enantioselectivities (99% ee) and high catalyst activity (S/C = 500-1000) were also obtained in the case of substrates bearing a Ph or a fluoroaryl R substituent. In addition, the system is also appropriate for the preparation of other synthetically useful esters as those for R = benzyl, 2-phenylethyl or N-phthalimido alkyl chains. Likewise, the hydrogenation of divinyl dibenzoates proceeded with very high diastero- and enantioselectivity, generating rather low amounts of the meso isomer (3-6%). On the other hand, substrates with Br and MeO substituents at the phenyl benzoate ring, suitable for further functionalization, have also been examined. The results obtained indicate no detrimental effect of these substituents in the hydrogenation. Alternatively, the methodology has been applied to the highly enantioselective synthesis of deuterium isotopomers of 1-octyl benzoate bearing CDH2, CD2H, or CD3 fragments. Finally, as a practical advantage of the present system, it has been observed that the high performance of the catalysts is retained in highly concentrated solutions or even in the neat substrate, minimizing both the amount of solvent added and the volume of the reaction.

  DOI：

  10.1021/cs501402z
• 作为产物：
  描述：

  4-氟苯乙炔 、 苯甲酸 在 C₅₈H₃₄F₁₈O₆P₂Ru 、 silver trifluoromethanesulfonate 作用下， 以 甲苯 为溶剂， 反应 2.0h， 以94%的产率得到1-(4-fluorophenyl)vinyl benzoate
  参考文献：
  名称：

  钌催化马尔可夫尼可夫羧酸向炔烃的烯醇酯的区域选择性形成

  摘要：

  钌络合物[Ru（CO）2（P（p -C 6 H 4 -X）3）2（O 2 CPh）2 ]（1a，X = CF 3 ; 1b，X = Cl; 1c，X = H ；1d，X = Me；1e，X = OMe）已成功应用于末端区域炔烃的区域选择性马尔可夫尼可夫加成反应，生成了有价值的烯醇酯。催化剂筛选显示出膦的电子性质对活性和选择性有重大影响。催化剂1a达到最高活性，具有最吸电子的膦配体。通过添加催化量的AgOTf，可以进一步提高选择性和活性。此外，Markovnikov产品的选择性高达99％。底物对反应速率的电子影响通过哈米特图定量。通过使用富电子炔烃或高酸性羧酸，可以提高反应速率。因此，甚至可以在25°C下在4小时内定量地向富含电子的4-甲氧基苯基乙炔中添加高酸性五氟苯甲酸。此外，在温和的反应条件下（25–70°C），可以分离出种类繁多的简单的，电子或空间上具有挑战性的底物，具有良好的产率，具有很高的区域选择性。

  DOI：

  10.1021/acs.joc.5b02293

文献信息

• Control over C–O and C–C bond formation: ruthenium catalyzed regiospecific addition of carboxylic acid to alkyne and stereoselective dimerization of alkyne
  作者：Jyotsna Tripathy、Manish Bhattacharjee

  DOI：10.1016/j.tetlet.2009.06.039

  日期：2009.8

  A cationic ruthenium(II) complex, [Ru(PPh3)2(CH3CN)3Cl][BPh4] (1), has been found to be an effective catalyst for stereoselective dimerization of alkynes in the presence of a base, and for regiospecific addition of carboxylic acids to alkynes in presence of the Lewis acid, BF3·Et2O.

  发现阳离子钌（II）配合物[Ru（PPh 3）2（CH 3 CN）3 Cl] [BPh 4 ]（1）是在碱存在下炔烃立体选择性二聚的有效催化剂。 ，以及在路易斯酸BF 3 ·Et 2 O的存在下将羧酸区域特异性地添加到炔烃中。