1-(1,2-二苯基乙基)-4-甲基苯 | 67879-22-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 中文名称: 1-(1,2-二苯基乙基)-4-甲基苯
• 英文名称: (1-(p-tolyl)ethane-1,2-diyl)dibenzene
• 英文别名: Benzene, 1-(1,2-diphenylethyl)-4-methyl-；1-(1,2-diphenylethyl)-4-methylbenzene
• CAS: 67879-22-5
• 化学式: C₂₁H₂₀
• 分子量: 272.39
• InChiKey: PQGQBKVVEREGSZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6
• 重原子数：
  21
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  4-甲基二苯甲酮 在 正丁基锂 、 1,10-菲罗啉 、 sodium hydride 作用下， 以 四氢呋喃 、 正己烷 、 苯 为溶剂， 反应 19.0h， 生成 1-(1,2-二苯基乙基)-4-甲基苯
  参考文献：
  名称：

  Transition‐Metal‐Free Intermolecular Hydrocarbonation of Styrenes Mediated by NaH/1,10‐Phenanthroline

  摘要：

  AbstractA transition‐metal‐free intermolecular coupling reaction of halocompounds with styrenes in the presence of NaH and 1,10‐phenanthroline was developed. This reaction afforded hydrocarbonated products with complete anti‐Markovnikov selectivity. The method allows the use of a wide range of halocompounds, including aryl and alkyl halides, and good functional group tolerance. Detailed mechanistic studies indicated that an anilide anion generated in situ by the NaH‐mediated reduction of 1,10‐phenanthroline works as an electron donor and a hydrogen source.

  DOI：

  10.1002/chem.202203143

文献信息

• Pd-Catalyzed reductive heck reaction of olefins with aryl bromides for Csp²–Csp³ bond formation
  作者：Liqun Jin、Jiaxia Qian、Nan Sun、Baoxiang Hu、Zhenlu Shen、Xinquan Hu

  DOI：10.1039/c8cc02571a

  日期：——

  We developed a Pd-catalyzed intermolecular reductive Heck reaction to construct Csp2–Csp3 bonds between aryl bromides and olefins. Various styrene derivatives, acyclic and cyclic alkenes, were well tolerated to couple with varied aryl bromides in linear selectivity. Kinetic and deuterium labeling experiments suggested that i-PrOH provides a hydride through β-H elimination.

  我们开发了Pd催化的分子间还原性Heck反应，以构建芳基溴化物和烯烃之间的Csp 2 -Csp 3键。各种苯乙烯衍生物（无环和环状烯烃）具有良好的耐受性，可以线性选择性地与各种芳基溴化物偶联。动力学和氘标记实验表明，i-PrOH可通过消除β-H来提供氢化物。
• Nickel‐Catalyzed Asymmetric Reductive Diarylation of Vinylarenes
  作者：David Anthony、Qiao Lin、Judith Baudet、Tianning Diao

  DOI：10.1002/anie.201900228

  日期：2019.3.4

  A nickel‐catalyzed asymmetric diarylation reaction of vinylarenes enables the preparation of chiral α,α,β‐triarylated ethane scaffolds, which exist in a number of biologically active molecules. The use of reducing conditions with aryl bromides as coupling partners obviates the need for stoichiometric organometallic reagents and tolerates a broad range of functional groups. The application of an N‐oxyl

  镍催化乙烯基芳烃的不对称二芳基化反应能够制备手性 α,α,β-三芳基化乙烷支架，该支架存在于许多生物活性分子中。使用芳基溴化物作为偶联伙伴的还原条件消除了对化学计量有机金属试剂的需求，并耐受广泛的官能团。将N-氧基自由基作为配体应用于镍催化剂代表了一种促进镍催化交叉偶联反应的新方法。
• Alkene Hydrofunctionalization Reactions
  申请人：Sigman Matthew S.

  公开号：US20090069580A1

  公开（公告）日：2009-03-12

  A reductive cross coupling reaction process for functionalization of a nucleophilic alkene can be achieved. The nucleophilic alkene and a nucleophilic cross coupling partner compound can be reacted in the presence of an oxidizable alcohol and a suitable catalyst to form a reductive coupling product. Various additives can also be useful to refine the process such as by mitigating certain undesirable intermediates, facilitating specific site selectivity for various substitutions or reaction sites, etc. Chiral additives can be optionally used which act to provide asymmetric catalysis, e.g. allow for regioselective and stereoselective production of reductive coupling products. A reductive cross coupling pathway can include oxidizing the oxidizable alcohol to form a catalyst hydride. The nucleophilic alkene can be inserted into the catalyst hydride to form a catalyst-alkyl intermediate. Further, the catalyst-alkyl intermediate can be transmetallized with the nucleophilic cross coupling partner compound to form a transmetallated intermediate. The catalyst can be reductively eliminated to form the reductive coupling product and a reduced catalyst. Finally, the reduced catalyst can be oxidized under aerobic conditions, for example with oxygen, to form the oxidized catalyst and subsequent repetition through the cyclic pathway.

  可以实现对亲核烯烃进行官能化的还原型交叉偶联反应过程。在可氧化醇和适当的催化剂存在下，亲核烯烃和亲核交叉偶联配体化合物可以发生反应，形成还原型偶联产物。各种添加剂也可用于优化该过程，例如通过减轻某些不良中间体，促进特定位点的选择性取代或反应位点等。还可以选择性地使用手性添加剂，用于提供不对称催化作用，例如实现还原型偶联产物的区域选择性和立体选择性生产。还原型交叉偶联途径可以包括将可氧化醇氧化以形成催化剂氢化物。亲核烯烃可以插入催化剂氢化物中，形成催化剂烷基中间体。此外，催化剂烷基中间体可以与亲核交叉偶联配体化合物发生转金属化反应，形成一个转金属化中间体。催化剂可以发生还原消除反应，形成还原偶联产物和还原催化剂。最后，还原催化剂可以在氧气等气氛条件下氧化，形成氧化催化剂，并通过循环途径进行后续重复。
• A new approach to carbon–carbon bond formation: development of aerobic Pd-catalyzed reductive coupling reactions of organometallic reagents and styrenes
  作者：Keith M. Gligorich、Yasumasa Iwai、Sarah A. Cummings、Matthew S. Sigman

  DOI：10.1016/j.tet.2009.03.096

  日期：2009.6

  Alkenes are attractive starting materials for organic synthesis and the development of new selective functionalization reactions is desired. Previously, our laboratory discovered a unique Pd-catalyzed hydroalkoxylation reaction of styrenes containing a phenol. Based upon deuterium labeling experiments, a mechanism involving an aerobic alcohol oxidation coupled to alkene functionalization was proposed

  烯烃是有机合成的有吸引力的起始材料，需要开发新的选择性功能化反应。此前，我们的实验室发现了一种独特的 Pd 催化的含有苯酚的苯乙烯的加氢烷氧基化反应。基于氘标记实验，提出了一种涉及有氧醇氧化与烯烃官能化耦合的机制。这些结果激发了新的 Pd 催化烯烃和有机金属试剂的还原偶联反应的发展，该反应产生了新的碳 - 碳键。描述了有机锡烷和有机硼酸酯偶联条件的优化，并介绍了转化的初始范围。此外，
• Palladium-Catalyzed Oxidative Intermolecular Difunctionalization of Terminal Alkenes with Organostannanes and Molecular Oxygen
  作者：Kaveri Balan Urkalan、Matthew S. Sigman

  DOI：10.1002/anie.200900218

  日期：2009.4.14

  palladium complex catalyzes the title transformations, which are thought to proceed via a π‐allyl or π‐benzyl intermediate. The regioselectivity of the reaction (1,2‐ or 1,1‐difunctionalization) depends on the type of terminal double bond (conjugated or nonconjugated) in the substrate (see scheme) and appears to be controlled by the relative rates of β‐hydride elimination and transmetalation. DMA=dimethylacetamide

  阳离子钯配合物催化标题转化，这被认为是通过 π-烯丙基或 π-苄基中间体进行的。反应的区域选择性（1,2-或 1,1-双官能化）取决于底物中末端双键（共轭或非共轭）的类型（见方案），似乎受 β-氢化物的相对速率控制消除和转移。DMA=二甲基乙酰胺，Tf=三氟甲磺酸。