2-(2-萘-2-基乙基)萘 | 21969-45-9

• 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: 2-(2-萘-2-基乙基)萘
• 英文名称: 1,2-bis(2-naphthyl)ethane
• 英文别名: 1,2-di(naphthalen-2-yl)ethane；1,2-di(2-naphthyl)ethane；2-[2-(2-Naphthyl)ethyl]naphthalene；2-(2-naphthalen-2-ylethyl)naphthalene
• CAS: 21969-45-9
• 化学式: C₂₂H₁₈
• 分子量: 282.385
• InChiKey: JBRUZJYYBDYZSX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

安全信息

• 海关编码：
  2902909090

反应信息

• 作为反应物：
  描述：

  2-(2-萘-2-基乙基)萘 在 chromium(VI) oxide 、 氯 、 溶剂黄146 作用下， 以 溶剂黄146 为溶剂， 生成 3,3'-dichloro-2,2'-ethanediyl-bis-[1,4]naphthoquinone
  参考文献：
  名称：

  Biquinones—III

  摘要：

  DOI：

  10.1016/s0040-4020(01)90754-9
• 作为产物：
  描述：

  2-甲基萘 在 N-溴代丁二酰亚胺(NBS) 、 caesium carbonate 、 copper(I) bromide 、 过氧化苯甲酰 作用下， 以 四氯化碳 、 水 、 丙酮 、 乙腈 为溶剂， 反应 12.0h， 生成 2-(2-萘-2-基乙基)萘
  参考文献：
  名称：

  铜促进硫氰酸苄酯二聚得到功能化联苄

  摘要：

  联苄衍生物的合成由于其多样化的药理学和合成应用而在有机化学中具有重要意义。在此，我们报道了一种新型的铜促进的二聚反应，用于从硫氰酸苄酯有效合成官能化联苄。偶联反应在有氧和温和的条件下通过级联 C-S 键裂解在一锅中进行。多种取代基，包括芳环上的吸电子基团，具有良好的耐受性，能够以中等至良好的产率提供所需的产物。所开发的方案可用于从两种不同的缺电子硫氰酸苄酯获得交叉偶联产物。

  DOI：

  10.1055/a-2330-9955

文献信息

• Low-Valent Titanium-Mediated Radical Conjugate Addition Using Benzyl Alcohols as Benzyl Radical Sources
  作者：Takuya Suga、Shoma Shimazu、Yutaka Ukaji

  DOI：10.1021/acs.orglett.8b02305

  日期：2018.9.7

  A concise method to directly generate benzyl radicals from benzyl alcohol derivatives has been developed. The simple and inexpensive combination of TiCl4(collidine) (collidine = 2,4,6-collidine) and manganese powder afforded a low-valent titanium reagent, which facilitated homolytic cleavage of benzylic C–OH bonds. The application to radical conjugate addition reactions demonstrated the broad scope

  已经开发出一种直接从苄醇衍生物产生苄基的简明方法。TiCl 4（可力丁）（可力丁= 2,4,6-可力丁）和锰粉的简单而廉价的组合提供了一种低价的钛试剂，可促进苄基C-OH键的均质裂解。自由基共轭加成反应的应用证明了该方法的广泛范围。各种苯甲醇衍生物与缺电子烯烃的反应提供了相应的自由基加合物。
• Synthesis of Dibenzyls by Nickel-Catalyzed Homocoupling of Benzyl Alcohols
  作者：Xing-Zhong Shu、Feng-Feng Pan、Peng Guo、Xiaochuang Huang

  DOI：10.1055/a-1467-2432

  日期：2021.9

  blocks that are widely used in organic synthesis, and they are typically prepared by the homocoupling of halides, organometallics, and ethers. Herein, we report an approach to this class of compounds using alcohols, which are more stable and readily available. The reaction proceeds via nickel-catalyzed and dimethyl oxalate assisted dynamic kinetic homocoupling of benzyl alcohols. Both primary and secondary

  二苄基是广泛用于有机合成中的基本结构单元，它们通常通过卤化物，有机金属和醚的均偶联来制备。本文中，我们报告了一种使用醇的这类化合物的方法，该醇更稳定且易于获得。该反应通过镍催化的和草酸二甲酯辅助的苄醇的动态动力学均偶联进行。伯醇和仲醇都是可以容忍的。
• Flash vacuum pyrolysis over magnesium. Part 1. Pyrolysis of benzylic, other aryl/alkyl and aliphatic halides
  作者：R. Alan Aitken、Philip K. G. Hodgson、John J. Morrison、Adebayo O. Oyewale

  DOI：10.1039/b108663d

  日期：2002.1.23

  Flash vacuum pyrolysis over a bed of freshly sublimed magnesium on glass wool results in efficient coupling of benzyl halides to give the corresponding bibenzyls. Where an ortho halogen substituent is present further dehalogenation gives some dihydroanthracene and anthracene. Efficient coupling is also observed for halomethylnaphthalenes and halodiphenylmethanes while chlorotriphenylmethane gives 4,4′-bis(diphenylmethyl)biphenyl. By using α,α′-dihalo-o-xylenes, benzocyclobutenes are obtained in good yield, while the isomeric α,α′-dihalo-p-xylenes give a range of high thermal stability polymers by polymerisation of the initially formed p-xylylenes. Other haloalkylbenzenes undergo largely dehydrohalogenation where this is possible, in some cases resulting in cyclisation. Deoxygenation is also observed with haloalkyl phenyl ketones to give phenylalkynes as well as other products. With simple alkyl halides there is efficient elimination of HCl or HBr to give alkenes. For aliphatic dihalides this also occurs to give dienes but there is also cyclisation to give cycloalkanes and dehalogenation with hydrogen atom transfer to give alkenes in some cases. For 5-bromopent-1-ene the products are those expected from a radical pathway but for 6-bromohex-1-ene they are clearly not. For 2,2-dichloropropane and 1,1-dichloropropane elimination of HCl occurs but for 1,1-dichlorobutane, -pentane and -hexane partial hydrolysis followed by elimination of HCl gives E,E-, E,Z- and Z,Z- isomers of the dialk-1-enyl ethers and fully assigned 13C NMR data are presented for these. With 6-chlorohex-1-yne and 7-chlorohept-1-yne there is cyclisation to give methylenecycloalkanes and -cycloalkynes. The behaviour of 1,2-dibromocyclohexane and 1,2-dichlorocyclooctane under these conditions is also examined. Various pieces of evidence are presented that suggest that these processes do not involve generation of free gas-phase radicals but rather surface-adsorbed organometallic species.

  在玻璃棉上覆盖一层新升华的镁,进行闪式真空热解,能有效促使苄基卤化物耦合生成相应的联苄。当有邻位卤素取代基存在时,进一步脱卤生成部分二氢蒽和蒽。卤甲基萘和二苯基甲烷也能高效耦合,而三苯基氯甲烷则生成4,4′-双(二苯甲基)联苯。用α,α′-二卤代邻二甲苯可以获得较高产率的苯并环丁烯,而异构的α,α′-二卤代对二甲苯,通过形成的对二甲苯的聚合,可以得到一系列高热稳定性的聚合物。其他卤代烃苯大体上会脱卤化氢,某些情况下能产生环化反应。同样可以观察到,苯基卤代烷烃脱去羰基生成苯乙炔以及其他产物。简单的烷基卤化物则高效地脱去HCl或HBr生成烯烃。脂肪族二卤化物也会发生这一反应生成二烯,但不发生环化反应生成环烷烃,或在某些情况下发生氢原子转移的脱卤反应生成烯烃。5-溴戊-1-烯的产物符合自由基途径的预期,但6-溴己-1-烯并不符合。2,2-二氯丙烷和1,1-二氯丙烷能脱去HCl,但1,1-二氯丁烷、戊烷和己烷则能部分水解,随后脱去HCl,生成E,E-, E,Z-和Z,Z-异构体二烷-1-烯基醚,并且得到了这些物质的13C NMR全归属数据。6-氯己-1-炔和7-氯庚-1-炔能发生环化反应生成亚甲基环烷烃和环炔烃。本文还考察了1,2-二溴环己烷和1,2-二氯环辛烷在上述条件下的行为。本文给出了众多种证据,表明这些反应过程不涉及气相自由基的形成,而是表面吸附的金属有机物种。
• Facile reductive coupling of benzylic halides with ferrous oxalate dihydrate
  作者：Jitender M. Khurana、Sushma Chauhan、Golak C. Maikap

  DOI：10.1039/b211792d

  日期：2003.5.15

  Facile reductive coupling of benzylic halides is reported with ferrous oxalate dihydrate in DMF or HMPA under nitrogen atmosphere at 155–160 °C. The coupling is proposed to proceed by two successive oxidative additions of benzylic halides to ferrous oxalate to give an intermediate organoiron complex which undergoes concerted dimerization to give the corresponding reductively coupled dimers in high yields.

  报道称，在氮气气氛下，使用二水合草酸亚铁在DMF或HMPA中，于155-160°C的温度下，可以轻松实现苄基卤化物的还原耦合反应。该耦合反应被认为是通过苄基卤化物对草酸亚铁的两次连续氧化加成，生成一种中间体有机铁配合物，该配合物随后经历协同二聚反应，以高产率得到相应的还原耦合二聚体。
• Photochemical Reductive C-C Coupling with a Guanidine Electron Donor
  作者：Sven Wiesner、Petra Walter、Arne Wagner、Elisabeth Kaifer、Hans-Jörg Himmel

  DOI：10.1002/ejoc.201600978

  日期：2016.10

  step of these reactions. Electron-withdrawing as well as -donating substituents at the phenyl group increase the reaction rate. Quantum chemical computations did not reveal any correlation between either the enthalpy or Gibbs free energy of the N–C bond cleavage step and the experimentally determined first-order rate constants. Instead, the structural difference between the excited state generated by

  评估了许多取代的苄基卤化物（15 个例子）与有机电子给体 2,3,5,6-四（四甲基胍基）吡啶的无金属光诱导还原 C-C 偶联反应。根据苄基上的取代基，可实现 50-95% 范围内的 C-C 偶联产物产率。通过最初形成的苄基-吡啶鎓盐的均裂 N-C 键裂解形成的光化学苄基自由基是这些反应的限速步骤。苯基上的吸电子和供电子取代基提高了反应速率。量子化学计算没有揭示 N-C 键裂解步骤的焓或吉布斯自由能与实验确定的一级速率常数之间的任何相关性。反而，