1,2-bis(2-iodophenyl)ethane | 2582-56-1

• 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: 1,2-bis(2-iodophenyl)ethane
• 英文别名: Rbvapczzzwvroo-uhfffaoysa-；1-iodo-2-[2-(2-iodophenyl)ethyl]benzene
• CAS: 2582-56-1
• 化学式: C₁₄H₁₂I₂
• 分子量: 434.058
• InChiKey: RBVAPCZZZWVROO-UHFFFAOYSA-N

物化性质

• 熔点：
  101.5-102.0 °C(Solv: methanol (67-56-1))
• 沸点：
  399.4±22.0 °C(Predicted)
• 密度：
  1.911±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.4
• 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

反应信息

• 作为反应物：
  描述：

  1,2-bis(2-iodophenyl)ethane 在 potassium phosphate 、 copper(l) iodide 、 碘代三甲硅烷 、 三乙胺 、 N,N'-二甲基乙二胺 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 反应 18.67h， 生成 cis-5,6-Dihydrodibenzo(c,g)(1,2)diazocine
  参考文献：
  名称：

  重氮合成的交叉偶联策略。

  摘要：

  乙烯桥连的偶氮苯是新颖的，有前途的分子开关，与线性偶氮苯相反，在（Z）中比（E）构型在热力学上更稳定。但是，它们以前的合成路线通常不通用，并且产量重现性差，有时非常低。在这里，我们提出了一种既通用又可靠的合成策略。从广泛使用的2-溴苄基溴开始，可以通过三个简单步骤获得指定的分子。

  DOI：

  10.1021/acs.orglett.0c00122
• 作为产物：
  描述：

  2-溴甲苯 在 N-溴代丁二酰亚胺(NBS) 、 正丁基锂 、 碘 、 magnesium 、 过氧化苯甲酰 作用下， 以 四氢呋喃 、 四氯化碳 、 正己烷 为溶剂， 反应 4.0h， 生成 1,2-bis(2-iodophenyl)ethane
  参考文献：
  名称：

  Iron-Catalyzed Homo-Coupling of Simple and Functionalized Arylmagnesium Reagents

  摘要：

  [GRAPHICS]Iron-catalyzed homo-coupling of simple and functionalized arylmagnesium reagents is described. The reaction is highly chemoselective (CN, COOEt and NO2 groups are tolerated). The procedure was used to perform intramolecular couplings. This cyclization reaction is the key step of the total synthesis of the N-methylcrinasiadine.

  DOI：

  10.1021/ol050340v

文献信息

• 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。
• A well-defined low-valent cobalt catalyst Co(PMe₃)₄ with dimethylzinc: a simple catalytic approach for the reductive dimerization of benzyl halides
  作者：Brendan J. Fallon、Vincent Corcé、Muriel Amatore、Corinne Aubert、Fabrice Chemla、Franck Ferreira、Alejandro Perez-Luna、Marc Petit

  DOI：10.1039/c6nj03265f

  日期：——

  halides which proceeds with low catalyst loadings (0.5 to 5 mol%). By synthetizing each cobalt intermediate we demonstrate that reaction proceeds through two single electron transfers (SET) and that dimethylzinc is only involved in the regeneration of the catalytic species.

  本文中，我们报道了钴催化的苄基卤化物的还原均偶联的第一催化形式，其在低催化剂负载量（0.5至5 mol％）下进行。通过合成每种钴中间体，我们证明了反应是通过两个单电子转移（SET）进行的，并且二甲基锌仅参与催化物质的再生。
• Aitken, R. Alan; Hodgson, Philip K. G.; Oyewale, Adebayo O., Chemical Communications, 1997, # 13, p. 1163 - 1164
  作者：Aitken, R. Alan、Hodgson, Philip K. G.、Oyewale, Adebayo O.、Morrison, John J.

  DOI：——

  日期：——
• Busch; Weber, Journal fur praktische Chemie (Leipzig 1954), 1936, vol. <2> 146, p. 1,23
  作者：Busch、Weber

  DOI：——

  日期：——
• Straightforward synthesis of substituted dibenzyl derivatives
  作者：Clève D. Mboyi、Sylvain Gaillard、Mbaye D. Mabaye、Nicolas Pannetier、Jean-Luc Renaud

  DOI：10.1016/j.tet.2013.04.073

  日期：2013.6

  The C-C bond formation by homogeneous catalysis is a powerful tool in organic synthesis. The replacement of noble metal by cheaper one for already reported methodologies is of interest for an economical purpose. The attractivity of such replacement is also enhanced if a first raw transition metal is found to be active in several processes.This work demonstrates that a common nickel complex can be used for a two-step cross-coupling procedure, namely a homocoupling reaction of benzyl derivatives and a subsequent Suzuki reaction. These consecutive reactions permit the synthesis of new polyfunctionalized dibenzyl compounds. (C) 2013 Elsevier Ltd. All rights reserved.

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