1-溴-4-[2-(4-溴苯基)乙基]苯 | 19829-56-2

• 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-溴-4-[2-(4-溴苯基)乙基]苯
• 中文别名: 1,2-双(4-溴苯基)乙烷
• 英文名称: 4,4'-dibromobibenzyl
• 英文别名: 1,2-bis(4-bromophenyl)ethane；4,4'-Dibrom-bibenzyl；1,2-di(p-bromophenyl)ethane；1,1'-(ethane-1,2-diyl)bis(4-bromobenzene)；1-bromo-4-[2-(4-bromophenyl)ethyl]benzene
• CAS: 19829-56-2
• 化学式: C₁₄H₁₂Br₂
• 分子量: 340.057
• InChiKey: XDRPVMCAFPGETC-UHFFFAOYSA-N

物化性质

• 熔点：
  118 °C
• 沸点：
  198 °C/10 mmHg
• 密度：
  1.579±0.06 g/cm3(Predicted)
• 溶解度：
  溶于甲苯

计算性质

• 辛醇/水分配系数(LogP)：
  5.5
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  2.0
• 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

安全信息

• 储存条件：
  室温且干燥

反应信息

• 作为反应物：
  描述：

  1-溴-4-[2-(4-溴苯基)乙基]苯 在 吡啶 、 溴 、 溶剂黄146 作用下， 生成 4,4'-[(E)-1,2-乙烯二基]二苯甲腈
  参考文献：
  名称：

  1.二苯烷的溴化和一些二苯乙烯衍生物的制备。第一部分。αβ-二苯乙烷

  摘要：

  DOI：

  10.1039/jr9430000001
• 作为产物：
  描述：

  1,2-二苯乙烷 在 溴 作用下， 生成 1-溴-4-[2-(4-溴苯基)乙基]苯
  参考文献：
  名称：

  The Action of Bromine Vapor on Solid Aromatic Compounds¹

  摘要：

  DOI：

  10.1021/ja01162a039

文献信息

• Direct preparation of benzylic manganese reagents from benzyl halides, sulfonates, and phosphates and their reactions: applications in organic synthesis
  作者：YoungSung Suh、Jun-sik Lee、Seoung-Hoi Kim、Reuben D Rieke

  DOI：10.1016/s0022-328x(03)00500-x

  日期：2003.11

  The use of highly active manganese (Mn)*, prepared by the Rieke method, was investigated for the direct preparation of benzylic manganese reagents. The oxidative addition of the highly active manganese to benzylic halides was easily completed under mild conditions. Moreover, benzylic manganese sulfonates and phosphates were prepared by direct oxidative addition of Mn* to the carbon–oxygen bonds of

  研究了通过Rieke方法制备的高活性锰（Mn）*用于直接制备苄基锰试剂的方法。高活性锰在苄基卤化物中的氧化加成反应很容易在温和的条件下完成。此外，通过将Mn *直接氧化加成到苄基磺酸盐和磷酸盐的碳-氧键上来制备苄基锰磺酸盐和磷酸盐。发现所得的苄基锰试剂与多种亲电试剂发生交叉偶联反应。这些反应大多数在温和条件下在不存在任何过渡金属催化剂的情况下进行。此外，还研究了使用高活性锰制备不含过渡金属催化剂的功能化苄基卤化物的均偶联产物。N-烷氧基羰基吡啶鎓盐。
• 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。
• Radical-mediated synthesis of trifluoroethyl amines and trifluoromethyl ketones from alkyl iodides
  作者：Sunggak Kim、Rajesh Kavali

  DOI：10.1016/s0040-4039(02)01675-1

  日期：2002.9

  Radical reaction of alkyl iodides with trifluoromethyl phenylsulfonyl oxime ether 10 and hexamethylditin at 300 nm in benzene afforded the corresponding trifluoromethyl oxime ethers 11 in high yields, which were reduced into the 2,2,2-trifluoroethyl amines with lithium aluminium hydride. The trifluoroethyl amines could be converted into the corresponding trifluoromethyl ketones by treatment with NBS

  烷基碘与三氟甲基苯基磺酰基肟醚10和六甲基二锡在苯中的自由基反应在300nm下以高收率得到相应的三氟甲基肟醚11，其用氢化铝锂还原为2,2,2-三氟乙胺。通过用NBS和DBU处理，可以将三氟乙基胺转化为相应的三氟甲基酮。
• Dimerization of Benzyl and Allyl Halides via Photoredox-Mediated Disproportionation of Organozinc Reagents
  作者：Alexander Dilman、Vitalij Levin、Daniil Agababyan、Marina Struchkova

  DOI：10.1055/s-0036-1591583

  日期：2018.8

  Published as part of the Special Topic Modern Radical Methods and their Strategic Applications in Synthesis Abstract Benzyl and allyl halides undergo homocoupling when treated with zinc in the presence of a catalytic amount of a cationic iridium(III) complex under irradiation with 400 nm light-emitting diodes. The reaction proceeds through the intermediate formation of an organozinc reagent, which disproportionates

  作为特别主题“现代自由基方法及其在合成中的战略应用”的一部分发布 抽象的 在催化量的阳离子铱（III）络合物的存在下，在400 nm发光二极管的照射下，用锌处理过的苄基卤化物和烯丙基卤化物会发生均偶联。该反应通过中间形成有机锌试剂进行，该有机锌试剂在光氧化还原条件下歧化成自由基和元素锌。 在催化量的阳离子铱（III）络合物的存在下，在400 nm发光二极管的照射下，用锌处理过的苄基卤化物和烯丙基卤化物会发生均偶联。该反应通过中间形成有机锌试剂进行，该有机锌试剂在光氧化还原条件下歧化成自由基和元素锌。
• Reactions of benzyltriphenylphosphonium salts under photoredox catalysis
  作者：Andrew M. Boldt、Sidney I. Dickinson、Jonathan R. Ramirez、Anna M. Benz-Weeden、David S. Wilson、Susan M. Stevenson

  DOI：10.1039/d1ob01570b

  日期：——

  The development of benzyltriphenylphosphonium salts as alkyl radical precursors using photoredox catalysis is described. Depending on substituents, the benzylic radicals may couple to form C–C bonds or abstract a hydrogen atom to form C–H bonds. A natural product, brittonin A, was also synthesized using this method.

  描述了使用光氧化还原催化开发作为烷基自由基前体的苄基三苯基鏻盐。根据取代基的不同，苄基可以偶联形成 C-C 键或夺取氢原子以形成 C-H 键。使用这种方法还合成了一种天然产物 Brittonin A。