2,2-dibromo-1-(4-ethylphenyl)ethanone | 41036-98-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,2-dibromo-1-(4-ethylphenyl)ethanone
• 英文别名: 2,2-dibromo-1-(4-ethylphenyl)ethan-1-one；α,α-Dibrom-4-ethylacetophenon；2,2-Dibromo-4 inverted exclamation mark-ethylacetophenone
• CAS: 41036-98-0
• 化学式: C₁₀H₁₀Br₂O
• 分子量: 305.997
• InChiKey: QWFMHNCKNGYBTP-UHFFFAOYSA-N

物化性质

• 沸点：
  314.8±32.0 °C(Predicted)
• 密度：
  1.695±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  4-乙基苯乙炔 在 N-溴代丁二酰亚胺(NBS) 作用下， 以 水 、 丙酮 为溶剂， 反应 0.67h， 以72%的产率得到2,2-dibromo-1-(4-ethylphenyl)ethanone
  参考文献：
  名称：

  高效可回收的溶胶凝胶聚合物催化了炔烃的一锅双官能化。

  摘要：

  发现氨基桥接的凝胶聚合物P1以优异的产率，区域选择性，官能团相容性和可回收性催化炔烃卤代官能化。我们已经观察到，在室温下，在短时间内，在无金属条件下，在聚合物P1的存在下，芳香族和脂肪族炔烃均可转化为α，α-二卤代酮。

  DOI：

  10.3390/molecules23081879

文献信息

• Visible-light-promoted oxidative halogenation of alkynes
  作者：Yiming Li、Tao Mou、Lingling Lu、Xuefeng Jiang

  DOI：10.1039/c9cc07655g

  日期：——

  In nature, halogenation promotes the biological activity of secondary metabolites, especially geminal dihalogenation. Related natural molecules have been studied for decades. In recent years, their diversified vital activities have been explored for treating various diseases, which call for efficient and divergent synthetic strategies to facilitate drug discovery. Here we report a catalyst-free oxidative

  在自然界中，卤化促进次生代谢产物的生物活性，特别是双生双卤化。相关的天然分子已经研究了数十年。近年来，已经探索了其多样化的重要活动来治疗各种疾病，这要求有效且多样化的合成策略以促进药物发现。在这里，我们报告了在环境条件下（卤离子，空气，水，可见光，室温和常压下）实现的无催化剂氧化卤化。从结构上讲，氧和卤离子之间的电子转移通过简单的共轭分子，其中苯乙炔既是反应物又是催化剂。综合而言，它提供了高度兼容的后期转化策略来构建二卤代乙酰苯（DHAP）。
• Reactivity of substrates with multiple competitive reactive sites toward NBS under neat reaction conditions promoted by visible light
  作者：Blaž Grjol、Marjan Jereb

  DOI：10.1007/s11696-021-01711-x

  日期：2021.10

  methoxy groups, respectively. Surprisingly, ipso-substitution of the acyl group with a bromine atom took place with (4-methoxynaphthyl) alkyl ketones. While the addition of the radical scavenger TEMPO (2,2,6,6-tetramethylpiperidin-1-yloxy) decreased the extent of α- and ring bromination, it completely suppressed the benzylic bromination and α,α-dibromination with NBS under SFRC.

  摘要在无溶剂反应条件下，研究了可见光诱导的一系列（杂）芳基烷基取代酮与 N-溴代琥珀酰亚胺 (NBS) 的区域选择性转化，这些酮具有多个竞争性反应位点（α-羰基、苄基和芳环）。 (SFRC) 并且在没有惰性气体气氛、自由基引发剂和催化剂的情况下。使用 8 W 节能家用灯进行照射。在整个研究过程中处理了多相反应条件。所有底物在 α-羰基位置均为单溴化或二溴化，此外，在具有苄基碳原子或给电子甲氧基的底物中分别观察到一些苄基或芳族溴化。令人惊讶的是，与（4-甲氧基萘基）烷基酮发生了用溴原子对酰基的原位取代。
• K₂S₂O₈-Mediated Difunctionalization of C≡C Bonds in Water: A Simple and Efficient Approach to <font>α</font>,<font>α</font>-Dihaloacetophenones from Phenylacetylenes and NaX
  作者：Jing-Yu Wang、Qing Jiang、Can-Cheng Guo

  DOI：10.1080/00397911.2014.928938

  日期：2014.11.2

  Abstract A novel K2S2O8-mediated oxy-1,1-dihalogenation of alkynes with NaX in the presence of water has been developed, affording α,α-dihaloacetophenones in moderate to good yields. The advantages of this reaction are mild reaction conditions, operational simplicity, and use of pure water as reaction medium. A plausible reaction mechanism is proposed on the basis of mechanistic studies. GRAPHICAL

  摘要 开发了一种新型 K2S2O8 介导的炔烃与 NaX 在水存在下的 oxy-1,1-二卤化反应，以中等至良好的收率得到 α,α-二卤代苯乙酮。该反应的优点是反应条件温和，操作简单，可以使用纯水作为反应介质。在机理研究的基础上提出了一个合理的反应机理。图形概要
• Silica gel catalyzed α-bromination of ketones using N-bromosuccinimide: An easy and rapid method
  作者：Bodireddy Mohan Reddy、Velpula Venkata Ramana Kumar、Nallagondu Chinna Gangi Reddy、Siripragada Mahender Rao

  DOI：10.1016/j.cclet.2013.09.014

  日期：2014.1

  An easy and rapid method for the alpha-bromination of ketones using N-bromosuccinimide (NBS) catalyzed by silica gel in methanol under reflux conditions was developed. The expected products were formed in excellent isolated yields within a short period of time (5-20 min). Major advantages of the present procedure include use of inexpensive and readily available catalyst, exclusion of pre- and post-chemical treatment of catalyst and use of methanol as solvent instead of ethers and chlorinated solvents. (C) 2013 Nallagondu Chinna Gangi Reddy. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
• [EN] ANTI VIRAL COMPOUNDS<br/>[FR] COMPOSÉS ANTIVIRAUX
  申请人：PASTEUR INSTITUT KOREA

  公开号：WO2010046780A2

  公开（公告）日：2010-04-29

  There is provided small molecule anti-human immunodeficiency virus (anti-HIV) compounds as well as a phenotypic cell-based high throughput screening (HTS) assay for their identification.