methyl 3-(4-bromophenyl)-2,2-dimethyl-3-oxopropanoate | 644985-25-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 3-(4-bromophenyl)-2,2-dimethyl-3-oxopropanoate
• 英文别名: 3-(4-Bromo-phenyl)-2,2-dimethyl-3-oxo-propionic acid methyl ester；Methyl 4-bromo-I+/-,I+/--dimethyl-I(2)-oxobenzenepropanoate
• CAS: 644985-25-1
• 化学式: C₁₂H₁₃BrO₃
• 分子量: 285.137
• InChiKey: JHHWNZHPXRVZED-UHFFFAOYSA-N

物化性质

• 沸点：
  334.4±22.0 °C(predicted)
• 密度：
  1.379±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  methyl 3-(4-bromophenyl)-2,2-dimethyl-3-oxopropanoate 在 palladium dihydroxide tris(dibenzylideneacetone)dipalladium (0) 、 氢气 、 caesium carbonate 、 4,5-双二苯基膦-9,9-二甲基氧杂蒽 、 肼 作用下， 以 四氢呋喃 、 乙醇 为溶剂， 生成 3-(4-aminophenyl)-4,4-dimethyl-1H-pyrazol-5(4H)-one
  参考文献：
  名称：

  Benzyl vinylogous amide substituted aryldihydropyridazinones and aryldimethylpyrazolones as potent and selective PDE3B inhibitors

  摘要：

  Aryldihydropyridazinones and aryldimethylpyrazolones with 2-benzyl vinylogous amide substituents have been identified as potent PDE3B subtype selective inhibitors. Dihydropyridazinone 8a (PDE3B IC50 = 0.19 nM, 3A IC50 = 1.3 nM) was selected for in vivo evaluation of lipolysis induction, metabolic rate increase, and cardiovascular effects. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2003.08.056
• 作为产物：
  描述：

  异丁酸甲酯 在 戴斯-马丁氧化剂 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 生成 methyl 3-(4-bromophenyl)-2,2-dimethyl-3-oxopropanoate
  参考文献：
  名称：

  Benzyl vinylogous amide substituted aryldihydropyridazinones and aryldimethylpyrazolones as potent and selective PDE3B inhibitors

  摘要：

  Aryldihydropyridazinones and aryldimethylpyrazolones with 2-benzyl vinylogous amide substituents have been identified as potent PDE3B subtype selective inhibitors. Dihydropyridazinone 8a (PDE3B IC50 = 0.19 nM, 3A IC50 = 1.3 nM) was selected for in vivo evaluation of lipolysis induction, metabolic rate increase, and cardiovascular effects. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2003.08.056

文献信息

• Some uses of mischmetall in organic synthesis
  作者：Marie-Isabelle Lannou、Florence Hélion、Jean-Louis Namy

  DOI：10.1016/j.tet.2003.07.017

  日期：2003.12

  Mischmetall, an alloy of the light lanthanides, has been used in a variety of organic reactions, either as a coreductant in samarium(II)-mediated reactions (Barbier and Grignard-type reactions, pinacolic coupling reactions) or as the promoter of Reformatsky-type reactions. It has been also employed as the starting material for easy syntheses of lanthanide trihalides, the reactivity of which has been

  Mischmetall是一种轻型镧系元素的合金，已用于多种有机反应中，作为sa（II）介导的反应（巴比尔和格利雅德型反应，松香偶联反应）的共轭物或Reformatsky-的促进剂。类型反应。它也被用作容易合成镧系三卤化物的起始原料，在今元和Luche-Fukuzawa反应以及Mukaiyama aldol反应中已经探究了其反应活性。
• Cu-Catalyzed Synthesis of Benzoxazole with Phenol and Cyclic Oxime
  作者：Zheng-Hai Wang、Dong-Hui Wang

  DOI：10.1021/acs.orglett.1c04322

  日期：2022.1.21

  A Cu-catalyzed straightforward synthesis of benzoxazoles from free phenols and cyclic oxime esters is reported. The mild reaction conditions tolerate various electron-withdrawing and electron-donating functional groups on both substrates, affording benzoxazoles in moderate to good yields. With this protocol, large-scale syntheses of Ezutromid and Flunoxaprofe in one or two steps are demonstrated. A

  报道了一种由游离酚和环肟酯催化直接合成苯并恶唑的方法。温和的反应条件耐受两种底物上的各种吸电子和给电子官能团，以中等至良好的产率提供苯并恶唑。使用该协议，证明了在一个或两个步骤中大规模合成Ezutromid和Flunoxaprofe 。提出了一种催化机制，包括通过内球电子转移和随后的环化进行铜催化胺化。
• Synthesis of β-Ketonitriles via <i>N</i>-Heterocyclic-Carbene-Catalyzed Radical Coupling of Aldehydes and Azobis(isobutyronitrile)
  作者：Jiao-Mei Wang、Teng Chen、Chang-Sheng Yao、Kai Zhang

  DOI：10.1021/acs.orglett.3c01168

  日期：2023.5.12

  (N-heterocyclic carbene)-catalyzed radical coupling reaction between aldehydes and azobis(isobutyronitrile) (AIBN) has been developed. This method provides an efficient and convenient approach for the synthesis of β-ketonitriles containing a quaternary carbon center (31 examples, up to >99% yield) utilizing commercially available substrates. This protocol features broad substrate scope, good functional group

  在此，开发了NHC（N-杂环卡宾）催化的醛与偶氮双（异丁腈）(AIBN) 之间的自由基偶联反应。该方法为利用市售底物合成含有季碳中心的 β-酮腈（31 个实例，产率高达 >99%）提供了一种高效便捷的方法。该方案具有广泛的底物范围、良好的官能团耐受性以及在无金属和温和反应条件下的高效率。