1-(4-bromophenyl)-2-phenylprop-2-en-1-one | 69342-42-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: 1-(4-bromophenyl)-2-phenylprop-2-en-1-one
• 英文别名: 1-(4-Bromophenyl)-2-phenylprop-2-en-1-one
• CAS: 69342-42-3
• 化学式: C₁₅H₁₁BrO
• 分子量: 287.156
• InChiKey: GLEGFTDFWLOEFN-UHFFFAOYSA-N

物化性质

• 沸点：
  405.9±45.0 °C(Predicted)
• 密度：
  1.361±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  3,5-二甲基-4-硝基吡唑 、 1-(4-bromophenyl)-2-phenylprop-2-en-1-one 在 盐酸 、 (2S)-N-[2,6-di(propan-2-yl)phenyl]-1-[3-[(2S)-2-[[2,6-di(propan-2-yl)phenyl]carbamoyl]-1-oxidopiperidin-1-ium-1-yl]propyl]-1-oxidopiperidin-1-ium-2-carboxamide 、 scandium(III) chloride hexahydrate 作用下， 以 氯仿 为溶剂， 反应 17.0h， 以98%的产率得到(S)-1-(4-bromophenyl)-3-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)-2-phenylpropan-1-one
  参考文献：
  名称：

  吡唑与α-取代的乙烯基酮之间通过Aza-Michael反应对映选择性质子化

  摘要：

  AbstractAn enantioselective protonation by means of chiral scandium complex‐catalyzed aza‐Michael reaction was realized. A series of α‐aryl‐substituted vinyl ketones reacted with pyrazoles smoothly, affording the corresponding enantiomerically enriched pyrazole derivatives with excellent results (up to 99% yield, 94% ee). Water and hydrogen chloride were found to accelerate the protonation process.magnified image

  DOI：

  10.1002/adsc.201400616
• 作为产物：
  描述：

  碘苯 、 1-(4-bromophenyl)-2-diazo-propan-1-one 在 四(三苯基膦)钯 、 二异丙胺 、 silver carbonate 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 0.5h， 以75%的产率得到1-(4-bromophenyl)-2-phenylprop-2-en-1-one
  参考文献：
  名称：

  钯催化的α-重氮羰基化合物与芳香族硼酸或卤化物的偶联反应

  摘要：

  已经开发出有效的钯催化的α-重氮羰基化合物与芳基硼酸或芳基卤化物的交叉偶联反应。对于多种重氮化合物，硼酸和卤化物，反应可以顺利进行。偶联反应条件容许底物的芳环上的各种取代基，例如氯，氟，酰基，氧代，酯和硝基。该偶联反应构成了对α-芳基取代的α，β-不饱和羰基化合物的新颖获得。从机理上讲，钯-卡宾被认为是关键的中间体。其形成之后，将芳基迁移插入钯-卡宾配合物的碳中，随后消除β-氢化物。 钯催化-交叉偶联-重氮化合物-芳基卤化物-芳基硼酸

  DOI：

  10.1055/s-0030-1258322

文献信息

• Catalytic Reductive Cross Coupling and Enantioselective Protonation of Olefins to Construct Remote Stereocenters for Azaarenes
  作者：Manman Kong、Yaqi Tan、Xiaowei Zhao、Baokun Qiao、Choon-Hong Tan、Shanshan Cao、Zhiyong Jiang

  DOI：10.1021/jacs.1c01073

  日期：2021.3.17

  A novel enantioselective protonation protocol that is triggered by reductive cross coupling of olefins is reported. When under cooperative photoredox and chiral hydrogen-bonding catalytic conditions and using a terminal reductant, various α-branched vinylketones with diverse vinylazaarenes could provide important enantioenriched azaarene derivatives containing tertiary stereocenters at their remote

  报道了一种由烯烃的还原交叉偶联触发的新型对映选择性质子化方案。当在协同光氧化还原和手性氢键催化条件下并使用末端还原剂时，具有不同乙烯基氮杂芳烃的各种α-支化乙烯基酮可以提供重要的对映体富集的氮杂芳烃衍生物，在其远端δ-位含有叔立体中心，具有高产率和对映选择性。该反应体系也适用于 α-支化的乙烯基氮杂芳烃，因此成功组装了难以捉摸的 1,4-立体中心。产物后期修饰方便，尤其是形成远程ε-叔碳和ε-杂四元碳立体中心，进一步凸显了该方法的重要合成价值。
• Palladium-Catalyzed Cross-Coupling of α-Diazocarbonyl Compounds with Arylboronic Acids
  作者：Cheng Peng、Yan Wang、Jianbo Wang

  DOI：10.1021/ja0782293

  日期：2008.2.6

  Pd(PPh3)4-catalyzed reaction between α−diazocarbonyl compounds and arylboronic acids leads to the formation of cross-coupling products in good yields.

  α-重氮羰基化合物与芳基硼酸之间的 Pd(PPh3)4 催化反应导致以良好产率形成交叉偶联产物。
• Enantioselective Radical Hydroacylation of α,β-Unsaturated Carbonyl Compounds with Aldehydes by Triplet Excited Anthraquinone
  作者：Yao Luo、Qi Wei、Liangkun Yang、Yuqiao Zhou、Weidi Cao、Zhishan Su、Xiaohua Liu、Xiaoming Feng

  DOI：10.1021/acscatal.2c04047

  日期：2022.10.21

  hydroacylation of α-substituted α,β-unsaturated carbonyl compounds through direct hydrogen atom transfer in the presence of the photocatalyst anthraquinone and chiral N,N′-dioxide/metal complexes. This mild, robust method provided a facile access to a wide array of chiral ketones with α-tertiary stereocenters by using the readily available aldehyde as a hydroacylation reagent. Based on the spectroscopy experiments

  手性酮的合成一直是化学研究的长期焦点。对映选择性自由基加氢酰化作为获得各种手性酮的有用策略，仅限于与 β-取代烯烃的反应，其中通过立体控制的自由基加成到前手性烯烃产生 β-立体中心。在此，我们通过在光催化剂蒽醌和手性N ,'-二氧化物/金属配合物。这种温和、稳健的方法通过使用容易获得的醛作为氢化酰化试剂，提供了一种容易获得具有 α-叔立体中心的手性酮的方法。基于光谱实验和控制实验以及DFT计算，提出了氢原子转移/自由基加成/对映选择性反向氢原子转移序列。
• A Phosphine-Catalyzed Regioselective [3+2] Cycloaddition of Ethyl 5,5-Diarylpenta-2,3,4-trienoate with Aromatic Aldehydes and α,β-Unsaturated Carbonyl Compounds
  作者：Lu-Feng Wang、Xiao-Ping Cao、Zi-Fa Shi、Peng An、Hak-Fun Chow

  DOI：10.1002/adsc.201301000

  日期：2014.11.3

  AbstractTributylphosphine‐catalyzed regioselective [3+2] cycloadditions between ethyl 5,5‐diarylpenta‐2,3,4‐trienoate 1 and various aromatic aldehydes 2 to produce a wide variety of polysubstituted 2,5‐dihydrofurans 3, and between 1 and β‐unsubstituted α,β‐unsaturated carbonyl compounds 5 to give polysubstituted cyclopentenes 6 with a quaternary carbon center, are reported. In both cases the reaction partners approach each other via the sterically less hindered orientation to afford the target products in excellent regioselectivity. The reaction mechanism involved first the generation of a zwitterionic intermediate between the butatriene 1 and PBu3. For the formation of 2,5‐dihydrofurans 3, the preferred cyclization mode encompassed the nucleophilic attack of the α‐position of butatriene to the aldehydic carbon of 2, followed by the ring closure between the aldehydic oxygen of 2 and the γ‐position of butatriene, which is the first report of a normal [3+2] cycloaddition between cumulenes and aldehydes. For the formation of cyclopentenes 6, the reaction involved attack of the γ‐position of the butatriene to the electron‐deficient β‐position of the α,β‐unsaturated carbonyl compounds 5, followed by the ring closure between the α‐position of 5 and the α‐position of butatriene, which shows a different regioselectivity to the previously reported [3+2] cycloadditions between butatriene and olefins.magnified image