m-bromophenylcarbonylmethylidenetriphenylphosphorane | 61748-02-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: m-bromophenylcarbonylmethylidenetriphenylphosphorane
• 英文别名: 1-(3-bromophenyl)-2-(triphenylphosphoranylidene)ethanone；1-(3-bromophenyl)-2-(triphenyl-λ⁵-phosphaneylidene)ethan-1-one；Ph3PCHCOPhBr-m；Ethanone, 1-(3-bromophenyl)-2-(triphenylphosphoranylidene)-；1-(3-bromophenyl)-2-(triphenyl-λ5-phosphanylidene)ethanone
• CAS: 61748-02-5
• 化学式: C₂₆H₂₀BrOP
• 分子量: 459.322
• InChiKey: OEEJFBDBJQGLRU-UHFFFAOYSA-N

物化性质

• 沸点：
  593.6±52.0 °C(Predicted)
• 密度：
  1.37±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.9
• 重原子数：
  29
• 可旋转键数：
  5
• 环数：
  4.0
• 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：

  m-bromophenylcarbonylmethylidenetriphenylphosphorane 以 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 3.0h， 生成
  参考文献：
  名称：

  Isoform-Selective and Stereoselective Inhibition of Hypoxia Inducible Factor-2

  摘要：

  Hypoxia inducible factor (HIF) transcription factors reside at the center of signaling pathways used by mammalian cells to sense and respond to low oxygen levels. While essential to maintain oxygen homeostasis, misregulation of HIF protein activity correlates with tumor development and metastasis. To provide artificial routes to target misregulated HIF activity, we identified small molecule antagonists of the HIF-2 transcription factor that bind an internal cavity within the C-terminal PAS domain of the HIF-2 alpha subunit. Here we describe a new class of chiral small molecule ligands that provide the highest affinity binding, the most effective, isoform-selective inhibition of HIP-2 in cells, and trigger the largest protein conformation changes reported to date. The current results further illuminate the molecular mechanism of HIF-2 antagonism and suggest additional routes to develop higher affinity and potency HIF-2 antagonists.

  DOI：

  10.1021/acs.jmedchem.5b00529
• 作为产物：
  描述：

  3'-溴苯乙酮 在 copper(ll) bromide 作用下， 以 乙酸乙酯 、 甲苯 为溶剂， 反应 42.0h， 生成 m-bromophenylcarbonylmethylidenetriphenylphosphorane
  参考文献：
  名称：

  原位生成的半硫缩醛的非酶动力学动力学拆分：访问1,3-二取代的邻苯二甲酰胺。

  摘要：

  开发了半硫缩醛的第一个非酶促DKR反应。半硫缩醛是通过添加硫醇原位形成的，随后进行了分子内的氧杂-迈克尔反应。反应的范围很广，从脂族取代基到芳族取代基，均以良好的收率，中等的非对映选择性和高对映选择性获得了1,3-二取代-1,3-二氢异苯并呋喃产物。

  DOI：

  10.1002/adsc.201701518

文献信息

• Copper-Catalyzed N–O Cleavage of α,β-Unsaturated Ketoxime Acetates toward Structurally Diverse Pyridines
  作者：Lei Zhang、Jindian Duan、Gaochen Xu、Xiaojuan Ding、Yiyang Mao、Binsen Rong、Ning Zhu、Zheng Fang、Zhenjiang Li、Kai Guo

  DOI：10.1021/acs.joc.9b03238

  日期：2020.2.21

  The copper-catalyzed [4 + 2] annulation of α,β-unsaturated ketoxime acetates with 1,3-dicarbonyl compounds for the synthesis of three classes of structurally diverse pyridines has been developed. This method employs 1,3-dicarbonyl compounds as C2 synthons and enables the synthesis of multifunctionalized pyridines with diverse electron-withdrawing groups in moderate to good yields. The mechanistic investigation

  已经开发了铜催化的α，β-不饱和酮肟肟乙酸盐与[1,3-二羰基化合物的铜催化[4 + 2]环合反应，用于合成三类结构多样的吡啶。该方法采用1,3-二羰基化合物作为C2合成子，并能够以中等至良好的产率合成具有不同吸电子基团的多官能吡啶。机理研究表明反应是通过离子途径进行的。
• Enantioselective Synthesis of Multifunctionalized 4<i>H</i>-Pyrans via Formal [4 + 2] Annulation Process by Bifunctional Phosphonium Salt Catalysis
  作者：Jia-Hong Wu、Jianke Pan、Juan Du、Xiaoxia Wang、Xuemei Wang、Chunhui Jiang、Tianli Wang

  DOI：10.1021/acs.orglett.9b04079

  日期：2020.1.17

  highly enantioselective formal [4 + 2] annulation involving electron-deficient allenes as C2-synthons has been developed under bifunctional phosphonium salt catalysis. With this catalytic protocol, a wide range of synthetically interesting and highly functionalized chiral 4H-pyran derivatives were readily prepared in good yields (up to 99%) with outstanding diastereo- and enantioselectivities (up to

  在双功能phospho盐催化下，已开发出了一种高对映选择性的正式[4 + 2]环，其中涉及缺电子的丙二烯作为C2-合成子。通过这种催化方案，可以容易地以高收率（高达99％）和出色的非对映和对映选择性（高达> 20：1 dr，高达> 99.9）制备各种合成有趣且高度官能化的手性4H-吡喃衍生物。 ％ee）。该方法的实用性和实用性通过克级反应和简便的制备方法得到了证明。值得注意的是，这是在相转移催化系统下涉及烯丙基反应物的不对称环化反应的第一个例子。
• Highly Efficient Route to Functionalized Tetrahydrocarbazoles Using a Tandem Cross-Metathesis/Intramolecular-Hydroarylation Sequence
  作者：Xiao-Lei An、Jia-Rong Chen、Chang-Feng Li、Fu-Gen Zhang、You-Quan Zou、Ying-Cen Guo、Wen-Jing Xiao

  DOI：10.1002/asia.201000315

  日期：——

  The scope of the novel ruthenium‐catalyzed tandem cross‐metathesis/intramolecular‐hydroarylation sequence is described. This methodology offers a practical and efficient synthesis of structurally diverse and complex tetrahydrocarbazoles in good to excellent yields (up to 98 %). Moreover, preliminary efforts towards the development of an enantioselective version of the current process by sequential

  描述了新型钌催化的串联交叉复分解/分子内氢芳基化序列的范围。这种方法可以有效，高效地合成结构多样且复杂的四氢咔唑（高达98％）。而且，提出了通过用钌配合物和手性胺的顺序催化来开发当前方法的对映选择性形式的初步努力，其具有高收率和对映选择性（高达88％的收率和91％的ee）。
• Fe-Catalyzed Cycloisomerization of Aryl Allenyl Ketones: Access to 3-Arylidene-indan-1-ones
  作者：Johannes Teske、Bernd Plietker

  DOI：10.1021/acs.orglett.8b00612

  日期：2018.4.20

  A cycloisomerization of aryl allenyl ketones to 3-arylidene-indan-1-ones using a cationic Fe-complex as a catalyst is reported. The catalyst opens a synthetically interesting reaction pathway to this surprisingly underrepresented class of indanones that are not accessible using alternative catalytic systems.

  报道了使用阳离子铁络合物作为催化剂将芳基烯基酮环异构化成3-亚芳基-茚满-1-酮。催化剂为这种令人惊奇地代表性不足的茚满酮类打开了合成上令人感兴趣的反应途径，而使用替代的催化体系是无法达到的。
• Catalytic Synthesis of 1<i>H</i>-2-Benzoxocins: Cobalt(III)-Carbene Radical Approach to 8-Membered Heterocyclic Enol Ethers
  作者：Minghui Zhou、Lukas A. Wolzak、Zirui Li、Felix J. de Zwart、Simon Mathew、Bas de Bruin

  DOI：10.1021/jacs.1c10927

  日期：2021.12.8

  several opportunities for the synthesis of new bioactive compounds. The reactions are shown to proceed via cobalt(III)-carbene radical intermediates, which are involved in intramolecular hydrogen transfer (HAT) from the allylic position to the carbene radical, followed by a near-barrierless radical rebound step in the coordination sphere of cobalt. The proposed mechanism is supported by experimental observations

  使用顺磁性钴(II)卟啉催化剂[Co II (TPP)]（TPP=四苯基卟啉）对邻烯丙基羰基-芳基N-芳基磺酰腙进行金属自由基活化，为合成新型8元杂环化合物提供了一种有效且强大的方法烯醇醚。该合成方案通用且实用，能够以高产率合成多种独特的 1 H -2-苯并氧辛。催化环化反应具有优异的化学选择性，具有较高的官能团耐受性，并为合成新的生物活性化合物提供了多种机会。该反应通过钴(III)-卡宾自由基中间体进行，该中间体参与从烯丙基位置到卡宾自由基的分子内氢转移（HAT），然后在钴的配位层中进行近无障碍的自由基反弹步骤。所提出的机制得到了实验观察、密度泛函理论（DFT）计算和自旋捕获实验的支持。