(E)-1-(4-bromophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: (E)-1-(4-bromophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one
• 英文别名: (2E)-1-(4-Bromophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one
• 化学式: C₁₇H₁₅BrO₃
• 分子量: 347.208
• InChiKey: MQZBPKNMJYCJJA-YCRREMRBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  21
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (E)-1-(4-bromophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one 在 bis(η3-allyl-μ-chloropalladium(II)) 、 p-methylbenzaldehyde oxime 、 caesium carbonate 、 2-二-叔丁膦基-2',4',6'-三异丙基联苯 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 以95%的产率得到3-(3,4-二甲氧基-苯基)-1-(4-羟基-苯基)-丙烯酮
  参考文献：
  名称：

  高效溶剂和温度调谐访问醛肟醚和酚的功能通过Pd催化的C-O交叉偶联与芳基溴化物和溴查耳酮醛肟的†

  摘要：

  首次开发了具有功能切换选项的单一方法，用于钯催化芳基溴化物和溴代查耳酮与醛肟的C–O交叉偶联。发现配体t BuXPhos（L2）是Pd催化的醛肟与溴偶联伙伴的偶联的有效支撑配体。从肟醚到酚基或羟基的官能团转换是由溶剂或温度驱动的。该方法在短的反应时间内以良好的产率提供了优异的产物。

  DOI：

  10.1039/c9nj05124d
• 作为产物：
  描述：

  对溴甲苯 在 eosin 作用下， 以 水 、 乙腈 为溶剂， 反应 6.0h， 生成 (E)-1-(4-bromophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one
  参考文献：
  名称：

  芳香炔的光诱导无金属氢酰化通过 C(sp3)–H 官能化合成 α,β-不饱和酮

  摘要：

  尽管过去十年在通过过渡金属催化交叉偶联过程实现碳-碳键方面取得了显着进展，但通过 C(sp 3 )-H 官能化实现芳香族炔烃加氢酰化的无金属交叉偶联反应仍然很少见并且非常渴望。在这里，我们报告了一种无金属的可靠方法，使用 MeCN:H 2 O 作为绿色溶剂、曙红 Y 作为有机光催化剂和环境空气，通过 C(sp 3 )–H 官能化合成 α,β-不饱和酮（查尔酮）作为氧化剂。更重要的是，该策略可以有效地将各种甲基芳烃和芳香炔转化为所需的产物。该方法具有原子效率高、使用绿色溶剂、不含金属、环境友好、可见光作为可再生能源、与生物活性分子相容等优点。

  DOI：

  10.1021/acs.orglett.4c00031

文献信息

• An Easy Access to Oxime Ethers by <scp>Pd‐Catalyzed</scp> C—O <scp>Cross‐Coupling</scp> of Activated Aryl Bromides with Ketoximes and Chalcone Oximes
  作者：Reeta、T. M. Rangarajan、Raj Pal Singh、R. P. Singh、Manjula Singh

  DOI：10.1002/cjoc.201900540

  日期：2020.8

  An efficient Pd‐catalyzed method for C—O cross‐coupling of ketoximes and chalcone oximes with activated aryl bromides and bromo‐chalcones has been developed. All oxime ethers were obtained in good to excellent yields by [(π‐allyl)PdCl]2/t BuXPhos (L7 ) catalyst system. TrixiePhos (L11 ) was also found to be effective for the oxime coupling. This method offers an easy and smooth coupling of chalcone

  已经开发了一种有效的钯催化的方法，用于酮肟和查尔酮肟与活化的芳基溴化物和溴代查耳酮的C-O交叉偶联。通过[（π-烯丙基）PdCl] 2 / t BuXPhos（L7）催化剂体系可以很好地获得所有肟醚。还发现TrixiePhos（L11）对于肟耦合有效。该方法提供了查耳酮肟与活化的芳基溴化物和溴查耳酮的轻松，平滑的偶联，这是以前没有探索过的。
• Molecular packings and specific-bonding patterns in sulfonamides
  作者：Olga A. Blatova、Abdullah M. Asiri、Zahra M. Al-amshany、Muhammad Nadeem Arshad、Vladislav A. Blatov

  DOI：10.1039/c4nj00392f

  日期：——

  A novel approach for topological analysis of molecular packings is described and tested on the crystal structures of sulfonamides.

  描述了一种用于分子填充拓扑分析的新方法，并在磺胺晶体结构上进行了测试。
• Synthesis of novel chalcones through palladium-catalyzed C O cross-coupling reaction of bromo-chalcones with ethyl acetohydroxamate and their antiplasmodial evaluation against Plasmodium falcipuram in vitro
  作者：Reeta、Rajendran Vinoth、T.M. Rangarajan、Ayushee、Rishi Pal Singh、Manjula Singh

  DOI：10.1016/j.bioorg.2019.02.016

  日期：2019.5

  An efficient method for palladium-catalyzed CO cross-coupling of ethyl acetohydroxamate (EAcHO) with 4-bromo-chalcones has been developed to synthesize novel chalcones. The two supporting ligands, namely tBuXPhos (L7), and cataCXium®PIntB (L16) were found to be effective ligands towards the Pd-catalyzed CO cross-coupling reaction to afford the desired product in moderate to excellent yields (50-99%)

  已开发出一种有效的方法，用于钯催化的乙酰氧肟酸乙酯（EAcHO）与4-溴-查耳酮的CO交叉偶联反应，以合成新型查耳酮。发现两个支持配体，即tBuXPhos（L7）和cataCXium®PIntB（L16）是有效的配体，可实现Pd催化的CO交叉偶联反应，以中等至极好的收率（50-99％）提供所需的产物。使用[3H]次黄嘌呤掺入抑制试验，筛选偶联产物的体外血液期对恶性疟原虫（3D7）的抗血浆活性。在筛选的22种化合物中，有11种显示出良好的抗血浆活性，IC50值为6-16μg/ mL。选择的活性分子11、16、22，
• Synthesis and anti Methicillin resistant Staphylococcus aureus activity of substituted chalcones alone and in combination with non-beta-lactam antibiotics
  作者：Thanh-Dao Tran、Tuong-Ha Do、Ngoc-Chau Tran、Trieu-Du Ngo、Thi-Ngoc-Phuong Huynh、Cat-Dong Tran、Khac-Minh Thai

  DOI：10.1016/j.bmcl.2012.05.112

  日期：2012.7

  A total of 30 chalcone analogues was synthesized via a base catalyzed Claisen Schmidt condensation and screened for their in vitro antibacterial activity against Methicillin-sensitive Staphylococcus aureus (MSSA) and Methicillin-resistant Staphylococcus aureus (MRSA) alone or in combination with non beta-lactam antibiotics namely ciprofloxacin, chloramphenicol, erythromycin, vancomycin, doxycycline and gentamicin. In the checkerboard technique, fractional inhibitory concentration indices (FICI) show that the following combinations like ciprofloxacin with 25 (4'-bromo-2-hydroxychalcone); doxycycline with 21 (4-hydroxychalcone); doxycycline with 25; and doxycycline with 4 (2',2-dihydroxychalcone) were synergistic against MRSA. In term SAR study, the relationship between chalcone structure and their antibacterial activity against S. aureus and synergy with tested antibiotics were discussed. Possible mechanisms for antibacterial activity of chalcones alone as well as the synergistic effect in combinations were proposed by molecular modeling studies, respectively. Combinations of chalcones with conventional antibiotics could be an effective alternative in the treatment of infection caused by MRSA. (C) 2012 Elsevier Ltd. All rights reserved.
• A general and efficient Pd-catalyzed rapid 2-fluoroethoxylation of bromo-chalcones
  作者：T.M. Rangarajan、Kavita Devi、Akhilesh K. Verma、Rishi Pal Singh、Raj Pal Singh

  DOI：10.1016/j.jfluchem.2016.04.013

  日期：2016.6

  An efficient unprecedented Pd-catalyzed rapid 2-fluoroethoxylation of bromo-chalcones has been unveiled. The oxygen nucleophiles (fluoroalcohols) experience the rapid C-O bond forming reaction for the first time, albeit the alcohols are known to be a weak nucleophile and have greater competing beta-hydride elimination in the transition-metal-catalyzed (especially Pd and Cu) C-O cross-coupling reaction. The higher fluoroalcohols have also been effectively coupled with bromo-chalcones with relatively lower rate. (C) 2016 Elsevier B.V. All rights reserved.