4,4-dimethylpent-1-en-3-yl benzoate | 1234617-94-7

• 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: 4,4-dimethylpent-1-en-3-yl benzoate
• CAS: 1234617-94-7
• 化学式: C₁₄H₁₈O₂
• 分子量: 218.296
• InChiKey: OKIBLBQAHAHXRW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4,4-dimethylpent-1-en-3-yl benzoate 、 sodium phenoxide 在 C₄₈H₅₀IrNO₄P 作用下， 以 四氢呋喃 为溶剂， 反应 24.0h， 以88%的产率得到(R)-((4,4-dimethylpent-1-en-3-yl)oxy)benzene
  参考文献：
  名称：

  Iridium-Catalyzed Kinetic Asymmetric Transformations of Racemic Allylic Benzoates

  摘要：

  Versatile methods for iridium-catalyzed, kinetic asymmetric substitution of racemic, branched allylic esters are reported. These reactions occur with a variety of aliphatic, aryl, and heteroaryl allylic benzoates to form the corresponding allylic substitution products in high yields (74-96%) with good to excellent enantioselectivity (84-98% ee) with a scope that encompasses a range of anionic carbon and heteroatom nucleophiles. These kinetic asymmetric processes occur with distinct stereochemical courses for racemic aliphatic and aromatic allylic benzoates, and the high reactivity of branched allylic benzoates enables enantioselective allylic substitutions that are slow or poorly selective with linear allylic electrophiles.

  DOI：

  10.1021/ja103779e
• 作为产物：
  描述：

  乙烯基氯化镁 、 苯甲酰氯 、 特戊醛 在 吡啶 作用下， 以 四氢呋喃 为溶剂， 反应 1.5h， 以70%的产率得到4,4-dimethylpent-1-en-3-yl benzoate
  参考文献：
  名称：

  Iridium-Catalyzed Kinetic Asymmetric Transformations of Racemic Allylic Benzoates

  摘要：

  Versatile methods for iridium-catalyzed, kinetic asymmetric substitution of racemic, branched allylic esters are reported. These reactions occur with a variety of aliphatic, aryl, and heteroaryl allylic benzoates to form the corresponding allylic substitution products in high yields (74-96%) with good to excellent enantioselectivity (84-98% ee) with a scope that encompasses a range of anionic carbon and heteroatom nucleophiles. These kinetic asymmetric processes occur with distinct stereochemical courses for racemic aliphatic and aromatic allylic benzoates, and the high reactivity of branched allylic benzoates enables enantioselective allylic substitutions that are slow or poorly selective with linear allylic electrophiles.

  DOI：

  10.1021/ja103779e

文献信息

• Copper-Catalyzed Oxidative Dehydrogenative Carboxylation of Unactivated Alkanes to Allylic Esters via Alkenes
  作者：Ba L. Tran、Matthias Driess、John F. Hartwig

  DOI：10.1021/ja510093x

  日期：2014.12.10

  with various substituted benzoic acids to produce the corresponding allylic esters. Spectroscopic studies (EPR, UV–vis) revealed that the resting state of the catalyst is [(BPI)Cu(O2CPh)] (1-O2CPh), formed from [(BPI)Cu(PPh3)2], oxidant, and benzoic acid. Catalytic and stoichiometric reactions of 1-O2CPh with alkyl radicals and radical probes imply that C–H bond cleavage occurs by a tert-butoxy radical

  我们报道了铜催化未活化烷烃与各种取代苯甲酸的氧化脱氢羧化（ODC），产生相应的烯丙酯。光谱研究（EPR、UV-vis）表明，催化剂的静止状态为 [(BPI)Cu(O2CPh)] (1-O2CPh)，由 [(BPI)Cu(PPh3)2]、氧化剂和苯甲酸形成酸。 1-O2CPh 与烷基和自由基探针的催化和化学计量反应表明，叔丁氧基自由基发生了 C-H 键断裂。此外，环己烷和d12-环己烷在不同容器中反应的氘动力学同位素效应表明，环己烷ODC的周转限制步骤是C-H键断裂。为了了解铜催化酰胺化和铜催化 ODC 形成的产物差异的根源，进行了烷基自由基与一系列羧酸铜、酰胺酸铜和亚氨酸铜络合物的反应。竞争实验结果表明，烷基自由基与铜配合物的相对反应速率遵循Cu(II)-amidate > Cu(II)-imidate > Cu(II)-苯甲酸盐的趋势。与这一趋势一致，在苯甲酰胺酯和苯甲酸酯上含有更多富电子芳基的