2-methyl-2,4-dibromopentane | 28457-08-1

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机溴化物
• 英文名称: 2-methyl-2,4-dibromopentane
• 英文别名: 2,4-Dibromo-2-methylpentane；2,4-dibromo-2-methylpentane
• CAS: 28457-08-1
• 化学式: C₆H₁₂Br₂
• 分子量: 243.969
• InChiKey: ZNQUGWPFGHGORO-UHFFFAOYSA-N

物化性质

• 沸点：
  87-89 °C(Press: 23 Torr)
• 密度：
  1.6242 g/cm3(Temp: 0 °C)

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  8
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 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：

  2-methyl-2,4-dibromopentane 在 氢碘酸 作用下， 生成 2-甲基戊烷
  参考文献：
  名称：

  Kishner, Zhurnal Russkago Fiziko-Khimicheskago Obshchestva, 1912, vol. 44, p. 169

  摘要：

  DOI：
• 作为产物：
  描述：

  1,1,2-三甲基环丙烷 在 溴 、 溶剂黄146 作用下， 生成 2-methyl-2,4-dibromopentane
  参考文献：
  名称：

  Kishner, Zhurnal Russkago Fiziko-Khimicheskago Obshchestva, 1912, vol. 44, p. 169

  摘要：

  DOI：

文献信息

• Dual nickel- and photoredox-catalyzed reductive cross-coupling of aryl vinyl halides and unactivated tertiary alkyl bromides
  作者：Weijie Yu、Long Chen、Jiasi Tao、Tao Wang、Junkai Fu

  DOI：10.1039/c9cc00768g

  日期：——

  A novel reductive cross-coupling of aryl vinyl halides and unactivated tertiary alkyl bromides has been realized via photoredox/nickel dual catalysis to produce vinyl arene derivatives bearing all-carbon quaternary centers with excellent E-selectivity. A stoichiometric metal reductant could be avoided by employing commercially available N,N,N′,N′-tetramethylethylenediamine (TMEDA) as the terminal reductant

  通过光氧化还原/镍双重催化已经实现了芳基乙烯基卤化物和未活化的叔烷基溴化物的新型还原性交叉偶联，以产生具有优异的E-选择性的带有全碳四元中心的乙烯基芳烃衍生物。可以通过使用市售的N，N，N '，N'-四甲基乙二胺（TMEDA）作为末端还原剂来避免化学计量的金属还原剂。
• Nickel-catalyzed allylic defluorinative alkylation of trifluoromethyl alkenes with reductive decarboxylation of redox-active esters
  作者：Xi Lu、Xiao-Xu Wang、Tian-Jun Gong、Jing-Jing Pi、Shi-Jiang He、Yao Fu

  DOI：10.1039/c8sc04335c

  日期：——

  Herein, we report a nickel-catalyzed allylic defluorinative alkylation of trifluoromethyl alkenes through reductive decarboxylation of redox-active esters. The present reaction enables the preparation of functionalized gem-difluoroalkenes with the formation of sterically hindered C(sp3)–C(sp3) bonds under very mild reaction conditions, while tolerating many sensitive functional groups and requiring

  在此，我们报道了通过氧化还原活性酯的还原脱羧来镍催化三氟甲基烯烃的烯丙基脱氟烷基化。本反应能够在非常温和的反应条件下制备官能化偕二氟烯烃，并形成空间位阻C(sp 3 )–C(sp 3 )键，同时耐受许多敏感官能团并需要最少的底物保护。因此，该方法为生物学上感兴趣的分子的后期修饰提供了一种有效且方便的方法。
• Nickel-Catalyzed Defluorinative Reductive Cross-Coupling of <i>gem</i>-Difluoroalkenes with Unactivated Secondary and Tertiary Alkyl Halides
  作者：Xi Lu、Yan Wang、Ben Zhang、Jing-Jing Pi、Xiao-Xu Wang、Tian-Jun Gong、Bin Xiao、Yao Fu

  DOI：10.1021/jacs.7b06469

  日期：2017.9.13

  Herein, we described a nickel-catalyzed monofluoroalkenylation through defluorinative reductive cross-coupling of gem-difluoroalkenes with alkyl halides. Key to the success of this strategy is the combination of C-F cleavage with alkyl halides activation. This reaction enables the convenient synthesis of a large variety of functionalized monofluoroalkenes under mild reaction conditions with broad functional

  在此，我们描述了通过嵴二氟烯烃与烷基卤化物的脱氟还原交叉偶联实现的镍催化的单氟烯基化反应。该策略成功的关键是将 CF 裂解与烷基卤化物活化相结合。该反应能够在温和的反应条件下方便地合成多种官能化的单氟烯烃，具有广泛的官能团兼容性和优异的 Z 选择性。Ni 催化与 (Bpin)2/K3PO4 作为末端还原剂的结合促进了 C(sp2)-C(sp3) 的有效形成，尤其是具有高化学选择性的全碳四元中心的生成。
• Thermodynamic control of quantum defects on single-walled carbon nanotubes
  作者：Yutaka Maeda、Hiyori Murakoshi、Haruto Tambo、Pei Zhao、Kiyonori Kuroda、Michio Yamada、Xiang Zhao、Shigeru Nagase、Masahiro Ehara

  DOI：10.1039/c9cc05623h

  日期：——

  Single-walled carbon nanotubes with designed quantum defects are prepared and characterized. The photoluminescence (PL) of the nanotubes can be modified by thermal treatment from 1215–1224 to 1249–1268 nm. Theoretical calculations suggest that the change in the PL spectra by thermal treatment can be explained by isomerization from kinetic to thermodynamic products.

  制备并表征了具有设计的量子缺陷的单壁碳纳米管。纳米管的光致发光（PL）可以通过从1215–1224到1249–1268 nm的热处理进行修改。理论计算表明，热处理引起的PL光谱变化可以用从动力学产物到热力学产物的异构化来解释。
• NORBORNENE-TYPE POLYMERS HAVING QUATERNARY AMMONIUM FUNCTIONALITY
  申请人：Bell Andrew

  公开号：US20110143260A1

  公开（公告）日：2011-06-16

  Embodiments of the present disclosure encompass vinyl addition and ROMP polymers having at least one type of repeating unit that encompasses a comprise N + (CH 3 ) 3 OH − moiety. Other embodiments in accordance with the disclosure include alkali anion-exchange membranes (AAEMs) made from one of such polymers, anion fuel cells (AFCs) that encompass such AAEMs and components of such AFCs, other than the AAEM, that encompass one of such polymers.

  本公开的实施例涵盖具有至少一种重复单元的乙烯加成和ROMP聚合物，该重复单元包括一个包含N+（CH3）3OH−基团的组分。根据本公开的其他实施例，还包括由此类聚合物之一制成的碱性阴离子交换膜（AAEMs），包括这样的AAEM的阴离子燃料电池（AFCs）以及包括这样的聚合物之一的AFC的组件，除了AAEM。