2,3'-二氯苯乙酮 | 21886-56-6

• 物质功能分类: 化学试剂 - 有机试剂 - 芳香酮
• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2,3'-二氯苯乙酮
• 中文别名: a-氯代间氯苯乙酮；2,3’-二氯苯乙酮；alpha-氯代间氯苯乙酮；2-氯-1-(3-氯苯基)乙酮；2,3"-二氯苯乙酮
• 英文名称: 3-chlorophenacyl chloride
• 英文别名: 2-chloro-1-(3-chlorophenyl)ethanone；2-chloro-1-(3-chlorophenyl)ethan-1-one；2,3'-dichloroacetophenone；2-chloro-m-chloroacetophenone；3-chlorophenyl chloromethyl ketone
• CAS: 21886-56-6
• 化学式: C₈H₆Cl₂O
• 分子量: 189.041
• InChiKey: AVUVSYIYUADCKE-UHFFFAOYSA-N

物化性质

• 沸点：
  283.7±20.0 °C(Predicted)
• 密度：
  1.310±0.06 g/cm3(Predicted)
• 溶解度：
  可溶于氯仿（少许）、甲醇（少许）

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

安全信息

• 危险品标志：
  C
• 海关编码：
  2914700090
• 储存条件：
  存放于室温环境中，并请确保容器密封。

反应信息

• 作为反应物：
  描述：

  2,3'-二氯苯乙酮 在 sodium hydroxide 、 硼烷四氢呋喃络合物 、 三溴化硼 、 potassium carbonate 、 N-三甲基硅基乙酰胺 、 (S)-2-甲基-CBS-恶唑硼烷 作用下， 以 二甲基亚砜 、 丙酮 为溶剂， 生成 CL 316243
  参考文献：
  名称：

  （R，R）-5- [2-[[2- [3-（3-氯苯基）-2-羟乙基]-氨基]丙基] -1，3-苯并二恶唑-2，2-二羧酸二钠（CL 316,243）。一种有效的β-肾上腺素激动剂，实际上对β3受体具有特异性。一种有前途的抗糖尿病和抗肥胖药。

  摘要：

  DOI：

  10.1021/jm00094a025
• 作为产物：
  描述：

  3-氯苯乙烯 在 magnesium(II) chloride hexahydrate 、 氧气 、 lithium perchlorate 、 manganese(ll) chloride 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 40.0h， 以89%的产率得到2,3'-二氯苯乙酮
  参考文献：
  名称：

  The Mn-catalyzed paired electrochemical facile oxychlorination of styrenes via the oxygen reduction reaction

  摘要：

  报告了一种通过锰催化剂以可控模式生成氯自由基的电化学方法，并使用廉价的MgCl2作为氯源。

  DOI：

  10.1039/c9cc06746a

文献信息

• Purification and Characterization of an NADH-Dependent Alcohol Dehydrogenase from<i>Candida maris</i>for the Synthesis of Optically Active 1-(Pyridyl)ethanol Derivatives
  作者：Shigeru KAWANO、Miho YANO、Junzo HASEGAWA、Yoshihiko YASOHARA

  DOI：10.1271/bbb.100528

  日期：2011.6.23

  A novel (R)-specific alcohol dehydrogenase (AFPDH) produced by Candida maris IFO10003 was purified to homogeneity by ammonium sulfate fractionation, DEAE-Toyopearl, and Phenyl-Toyopearl, and characterized. The relative molecular mass of the native enzyme was found to be 59,900 by gel filtration, and that of the subunit was estimated to be 28,900 on SDS-polyacrylamide gel electrophoresis. These results suggest that the enzyme is a homodimer. It required NADH as a cofactor and reduced various kinds of carbonyl compounds, including ketones and aldehydes. AFPDH reduced acetylpyridine derivatives, β-keto esters, and some ketone compounds with high enantioselectivity. This is the first report of an NADH-dependent, highly enantioselective (R)-specific alcohol dehydrogenase isolated from a yeast. AFPDH is a very useful enzyme for the preparation of various kinds of chiral alcohols.

  一种由Candida maris IFO10003产生的新型（R）-特异性醇脱氢酶（AFPDH）通过硫酸铵分级、DEAE-Toyopearl和Phenyl-Toyopearl纯化至均一，并进行了表征。通过凝胶过滤法测得该酶的原分子质量为59,900，而在SDS-聚丙烯酰胺凝胶电泳中亚基的估计分子质量为28,900。这些结果表明该酶为同源二聚体。它需要NADH作为辅因子，并能还原包括酮和醛在内的多种羰基化合物。AFPDH能高对映选择性地还原乙酰吡啶衍生物、β-酮酯和某些酮化合物。这是首例从酵母中分离出的依赖NADH的高对映选择性（R）-特异性醇脱氢酶的报道。AFPDH对于制备多种手性醇是非常有用的酶。
• Experimental Study on the Reaction Pathway of α-Haloacetophenones with NaOMe: Examination of Bifurcation Mechanism
  作者：Kohei Tagawa、Keita Sasagawa、Ken Wakisaka、Shunsuke Monjiyama、Mika Katayama、Hiroshi Yamataka

  DOI：10.1246/bcsj.20130253

  日期：2014.1.15

  The reaction of PhCOCH2Br and NaOMe in MeOH gave PhCOCH2OH as the major product and PhCOCH2OMe as the minor product. Substituent effects on the reactivity and product selectivity revealed that an electron-withdrawing substituent on the phenyl ring enhanced the overall reactivity and gave more alcohol than ether. It was indicated that the alcohol was formed via carbonyl addition-epoxidation, whereas the ether was formed by direct substitution. Substituent effects on the reaction rates, as well as the effects of NaOMe concentration on the rate and product ratio for both reactions of PhCOCH2Br and PhCOCH2Cl are in line with the mechanism that the alcohol and ether products were formed via two independent and concurrent routes, carbonyl addition and α-carbon attack, respectively, and thus the reaction mechanism could be different from the bifurcation mechanism previously predicted for the reaction of PhCOCH2Br by a simulation study in the gas phase.

  在甲醇中，PhCOCH2Br与NaOMe的反应主要生成PhCOCH2OH，次要生成PhCOCH2OMe。取代基对反应活性和产物选择性的影响表明，苯环上的吸电子取代基增强了整体反应活性，生成更多的醇而非醚。表明醇是通过羰基加成-环氧化反应生成的，而醚是通过直接取代反应生成的。取代基对反应速率的影响，以及NaOMe浓度对PhCOCH2Br和PhCOCH2Cl反应速率和产物比例的影响，均与以下机理一致：即醇和醚产物分别通过两个独立且并行的路径——羰基加成和α-碳攻击生成，因此反应机理可能不同于之前气体相模拟研究中预测的PhCOCH2Br反应的分支机制。
• Synthesis of 1,4‐Dicarbonyl Compounds by Visible‐Light‐Mediated Cross‐Coupling Reactions of α‐Chlorocarbonyls and Enol Acetates
  作者：Qiang Liu、Rui‐Guo Wang、Hong‐Jian Song、Yu‐Xiu Liu、Qing‐Min Wang

  DOI：10.1002/adsc.202000791

  日期：2020.10.21

  visible‐light‐mediated radical coupling reactions of α‐chloroketones and enol acetates to afford 1,4‐dicarbonyl compounds, which are important precursors and intermediates in organic synthesis. The reaction involves photoredox‐catalyzed activation of the α‐chloroketone upon photoelectron transfer, carbon–chlorine bond cleavage, and coupling of the resulting radical with the carbon–carbon double bond of the

  在此，我们报告了一种协议，用于α-氯酮和烯醇乙酸酯的可见光介导的自由基偶联反应，以提供1,4-二羰基化合物，它们是有机合成中的重要前体和中间体。该反应涉及光电子转移，碳-氯键裂解以及光自由基与烯醇乙酸酯的碳-碳双键的偶联被α-氯酮的光氧化还原催化活化。这种温和的方案具有广泛的底物范围和中等至良好的产量。
• Rhodium(I)-Catalyzed Carboacylation/Aromatization Cascade Initiated by Regioselective C−C Activation of Benzocyclobutenones
  作者：Tianwen Sun、Yuna Zhang、Bo Qiu、Yafei Wang、Yuting Qin、Guangbin Dong、Tao Xu

  DOI：10.1002/anie.201713179

  日期：2018.3.5

  Described here is the first example of a rhodium‐catalyzed carboacylation/aromatization cascade of a C=O bond by C−C activation. In this transformation, a reactive rhodaindanone complex is regioselectively generated and adds across a C=O bond with subsequent elimination, thus providing a unique strategy to access a multisubstituted benzofuran scaffold. A diverse range of benzofuran analogues were obtained

  这里描述的是第一个通过CC活化的C = O键的铑催化的碳酰化/芳香化级联反应的第一个例子。在这种转化中，反应性的若丹丹酮络合物是区域选择性生成的，并通过一个C = O键加成并随后被消除，从而提供了一种独特的策略来接近多取代的苯并呋喃支架。以高收率获得了多种苯并呋喃类似物。机理研究表明，三环内酯是可行的中间体。将该方法应用于C13-deOH-乙烯基呋喃呋喃和C13-deOH-二氢吲哚酮G的全合成。
• A practical synthesis of α-bromo/iodo/chloroketones from olefins under visible-light irradiation conditions
  作者：Zhihui Wang、Lei Wang、Zhiming Wang、Pinhua Li、Yicheng Zhang

  DOI：10.1016/j.cclet.2020.02.022

  日期：2021.1

  Abstract A practical synthesis of α-bromo/iodo/chloroketones from olefins under visible-light irradiation conditions has been developed. In the presence of PhI(OAc)2 as promoter and under ambient conditions, the reactions of styrenes and triiodomethane undergo the transformation smoothly to deliver the corresponding α-iodoketones without additional photocatalyst in good yields under sunlight irradiation

  摘要建立了在可见光条件下由烯烃合成α-溴/碘/氯酮的实用方法。在存在PhI（OAc）2作为促进剂的情况下，并且在环境条件下，苯乙烯和三碘甲烷的反应平稳地进行转化，从而在阳光照射下以良好的收率顺利地递送了相应的α-碘酮，而没有额外的光催化剂。同时，通过使用Ru（bpy）3Cl2作为光催化剂在蓝色LED（450-455 nm）辐射下，苯乙烯与三溴甲烷和三氯甲烷的反应可以高产率产生所需的α-溴代酮和α-氯代酮。