4,4'-亚乙基二苯甲醚 | 1657-55-2

• 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: 4,4'-亚乙基二苯甲醚
• 英文名称: 1,2-bis(4-methoxyphenyl)ethane
• 英文别名: 4,4’-dimethoxybibenzyl；4,4'-dimethoxybibenzyl；1-methoxy-4-[2-(4-methoxyphenyl)ethyl]benzene
• CAS: 1657-55-2
• 化学式: C₁₆H₁₈O₂
• 分子量: 242.318
• InChiKey: YPJNONWWTLUVEF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2909309090

反应信息

• 作为反应物：
  描述：

  4,4'-亚乙基二苯甲醚 在 三溴化硼 、 水 作用下， 以 二氯甲烷 为溶剂， 以100%的产率得到bi苄基-4,4-二醇
  参考文献：
  名称：

  具有非极性连接原子取代基的联苄基和芪核化合物作为雌激素受体β的选择性配体

  摘要：

  一系列结构简单的联苄二醇和芪二醇核心分子，众所周知的己雌酚和己烯雌酚非甾体雌激素的结构类似物，被制备并评估为雌激素受体 (ER) 亚型选择性配体。对它们的 ERα 和 ERβ 结合的分析表明，某些取代模式产生了对 ERβ 具有 >100 倍选择性的结合亲和力。当在基于细胞的基因转录测定中进一步研究时，一些分子显示出类似的高相对转录效力选择性，有利于 ERβ。有趣的是，最具 ERβ 选择性的分子是那些在内部碳原子之一上带有非极性取代基的分子。这些化合物应该是确定 ERβ 生理作用的有用探针，

  DOI：

  10.1016/j.ejmech.2009.02.006
• 作为产物：
  描述：

  4-甲氧基苄基三苯基膦溴化盐 以 乙醇 为溶剂， 生成 4,4'-亚乙基二苯甲醚
  参考文献：
  名称：

  Bestmann,H.-J. et al., Justus Liebigs Annalen der Chemie, 1967, vol. 704, p. 109 - 141

  摘要：

  DOI：

文献信息

• Studies of reduction with dimethoxyborane-transition metal boride systems.
  作者：Atsuko NOSE、Tadahiro KUDO

  DOI：10.1248/cpb.38.1720

  日期：——

  The reductino of a variety of functional groups with new dimethoxyborane-transition metal boride systems was investigated. These systems reduced olefin, aldehyde, ketone and nitrile functionalities to afford the corresponding reduction products under mild conditions. In particular, olefins bearing ketone, carboxylic acid and nitrile functionalities were selectively reduced with the dimethoxyborane-nickel boride system using 1/5mol eq of nickel boride.

  研究了新型二甲氧基硼烷-过渡金属硼化物体系对多种官能团的还原作用。这些体系在温和条件下将烯烃、醛、酮和腈类官能团还原，得到了相应的还原产物。特别是，含有酮、羧酸和腈结构的烯烃在1/5摩尔当量的镍硼化物作用下，通过二甲氧基硼烷-镍硼化物体系选择性地还原。
• 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。
• Nickel catalyzed deoxygenative cross-coupling of benzyl alcohols with aryl-bromides
  作者：Vinoth Kumar Chenniappan、Devin Peck、Ronald Rahaim

  DOI：10.1016/j.tetlet.2020.151729

  日期：2020.4

  nickel-catalyzed cross-electrophile coupling of benzyl alcohols with aromatic bromides has been developed. This deoxygenative cross-coupling occurs under mild reaction conditions at ambient temperature affording diarylmethanes, or 1,3-diarylpropenes from benzyl allyl alcohols. The system demonstrated good chemoselectivity tolerating an assortment of reactive functional groups.

  已经开发了镍催化的苄醇与芳族溴化物的亲电子交联。该脱氧交叉偶联在环境温度下在温和的反应条件下发生，从苄基烯丙醇得到二芳基甲烷或1，3-二芳基丙烯。该系统表现出良好的化学选择性，可耐受各种反应性官能团。
• Sulfonic acid anchored on silica, SiO ₂ @SO ₃ H: A superior solid acid catalyst for quick and solvent‐free reductive‐deoxygenation of ketones with NaBH ₃ CN
  作者：Behzad Zeynizadeh、Mehri Kouhkan

  DOI：10.1002/jccs.201800250

  日期：2018.12

  functional groups in the absence of acidic media (pH ~ 3–4). In this study, the immobilized sulfonic acid on silica, SiO2@SO3H, was prepared and applied as a new solid acid catalyst for extremely enhancing the reducing ability of NaBH3CN. The influence of SiO2@SO3H was highlighted by performing the quick and green reduction of structurally diverse carbonyl compounds involving aldehydes, ketones, α,β‐unsaturated

  NaBH 3 CN作为一种改性的氢硼酸盐试剂，由于强吸收性CN基团，在没有酸性介质（pH约3-4）的情况下，对还原官能团没有任何还原能力。在本研究中，制备了固定在二氧化硅上的磺酸SiO 2 @SO 3 H，并将其用作新型固体酸催化剂，以极大地增强NaBH 3 CN的还原能力。SiO 2 @SO 3 H的影响通过将结构多样的羰基化合物（包括醛，酮，α，β-不饱和的烯和烯酮，α-二酮和酰基醇）快速而绿色地还原为相应的醇或烷烃而得到了强调。 NaBH 3 CN。由NaBH 3在CN / SiO 2 @SO 3 H体系中，醛被还原为相应的醇，酮类化合物还原为烷烃，成为还原性脱氧产物。所有还原反应均在室温和无溶剂条件下于3分钟内进行，以提供高至优异收率的产品（90-98％）。