2-(2-bromobenzylidene)-3,4-dihydronaphthalen-1(2H)-one | 71940-70-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 四氢化萘
• 英文名称: 2-(2-bromobenzylidene)-3,4-dihydronaphthalen-1(2H)-one
• 英文别名: 1(2H)-Naphthalenone, 2-[(2-bromophenyl)methylene]-3,4-dihydro-；2-[(2-bromophenyl)methylidene]-3,4-dihydronaphthalen-1-one
• CAS: 71940-70-0
• 化学式: C₁₇H₁₃BrO
• mdl: MFCD14722859
• 分子量: 313.194
• InChiKey: JPTYKHNPHCMGTC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• 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

反应信息

• 作为反应物：
  描述：

  2-(2-bromobenzylidene)-3,4-dihydronaphthalen-1(2H)-one 在 叔丁基过氧化氢 、 [(Me₃Si)₂N]₃Yb(μ-Cl)Li(THF)₃ 、 (S)-2,4-di-tert-butyl-6-((2-(hydroxydiphenylmethyl)pyrrolidin-1-yl)methyl)phenol 作用下， 以 四氢呋喃 为溶剂， 反应 4.0h， 以83%的产率得到(2S,3'R)-3'-(2-bromophenyl)-3,4-dihydro-1H-spiro[naphthalene-2,2'-oxiran]-1-one
  参考文献：
  名称：

  Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Catalyzed by Rare-Earth Amides [(Me₃Si)₂N]₃RE(μ-Cl)Li(THF)₃ with Phenoxy-Functionalized Chiral Prolinols

  摘要：

  A simple and efficient catalytic enantioselective epoxidation of alpha,beta-unsaturated ketones has been successfully developed, which was catalyzed by rare-earth metal amides [(Me3Si)(2)N](3)RE(mu-Cl)Li(THF)(3) (RE = Yb (1), La (2), Sm (3), Y (4), Lu (5)) in the presence of phenoxy-functionalized chiral prolinols at room temperature using tert-butylhydroperoxide (TBHP) as the oxidant. The combination of an Yb-based amide 1 and a chiral proligand (S)-2,4-di-tert-butyl-6-((2-(hydroxydiphenylmethyl)pyrrolidin-1-yl)methyl)phenol) performed very well, and both the yields and the enantiomeric excess of the chiral epoxides reached up to 99% and 99% ee.

  DOI：

  10.1021/acs.orglett.5b00833
• 作为产物：
  描述：

  3,4-二氢-1(2H)-萘酮 、 邻溴苯甲醛 在 sodium hydroxide 作用下， 以 乙醇 、 水 为溶剂， 以86.6%的产率得到2-(2-bromobenzylidene)-3,4-dihydronaphthalen-1(2H)-one
  参考文献：
  名称：

  Introduction of amino moiety enhances the inhibitory potency of 1-tetralone chalcone derivatives against LPS-stimulated reactive oxygen species production in RAW 264.7 macrophages

  摘要：

  The design and synthesis of a series of thirty-two halogenated 1-tetralone or 6-amino-1-tetralone chalcone derivatives was achieved by the Claisen-Schmidt condensation reaction and were evaluated for their inhibitory effects against ROS production in LPS-stimulated RAW 264.7 macrophages. It was observed that the introduction of amino moiety into 1-tetralone skeleton greatly increased the inhibitory potency compared to corresponding 1-tetralone chalcones. Among the synthesized compounds, compound 18 which consists of 6-amino-1-tetralone skeleton together with o-fluorobenzylidene showed the most potent ROS inhibitory effect with IC50 value of 0.25 +/- 0.13 mu M. SAR analysis revealed that amino moiety at the 6th position of 1-tetralone chalcones have an important role for exerting the greater ROS inhibitory potency in LPS-stimulated RAW 264.7 macrophages than those exhibited by 1-tetralone chalcones alone.

  DOI：

  10.1016/j.bioorg.2019.03.055

文献信息

• Asymmetric Hydrogenation of Ketones and Enones with Chiral Lewis Base Derived Frustrated Lewis Pairs
  作者：Bochao Gao、Xiangqing Feng、Wei Meng、Haifeng Du

  DOI：10.1002/anie.201914568

  日期：2020.3.9

  The concept of frustrated Lewis pairs (FLPs) has been widely applied in various research areas, and metal-free hydrogenation undoubtedly belongs to the most significant and successful ones. In the past decade, great efforts have been devoted to the synthesis of chiral boron Lewis acids. In a sharp contrast, chiral Lewis base derived FLPs have rarely been disclosed for the asymmetric hydrogenation.

  沮丧的路易斯对（FLP）概念已在各个研究领域中得到广泛应用，无金属氢化无疑是最重要和最成功的氢化方法。在过去的十年中，人们一直致力于合成手性硼路易斯酸。与之形成鲜明对比的是，极少有人公开了手性路易斯碱衍生的FLP用于不对称氢化。在这项工作中，通过手性恶唑啉路易斯碱与非手性硼路易斯酸的简单结合，开发了一种新型的手性FLP，从而为未来手性FLP的发展提供了有希望的新方向。这些手性FLP被证明对酮，烯酮和色酮的不对称氢化非常有效，从而以高达95％ee的高收率提供了相应的产品。
• Formal [4 + 1] annulation of fluorinated sulfonium salt with cyclic unsaturated imines to access CF₃-substituted pyrroles
  作者：Tao Chen、Aoning Wang、Linxue Zhang、Chenlong Wei、Juhui Huang、Xiang Liu、Zhenqian Fu

  DOI：10.1039/d1ob00218j

  日期：——

  Formal [4 + 1] annulation of easily available fluorinated sulfonium salt with cyclic unsaturated imines has been successfully developed. A structurally diverse set of CF3-substituted dihydropyrroles was efficiently constructed in acceptable to excellent yields with excellent diastereoselectivities. The resulting CF3-containing dihydropyrroles from this transition metal-free strategy could be easily

  易于获得的氟化sulf盐与环状不饱和亚胺的正式[4 +1]环已成功开发。以可接受的产率至优异的产率和优异的非对映选择性，有效地构建了结构多样的一组CF 3取代的二氢吡咯。由这种无过渡金属的策略得到的含CF 3的二氢吡咯可以在碱性条件下容易地以良好的产率转化为吡咯。
• A facile and efficient reaction of α,β-unsaturated ketones and 3-amino-1-phenyl-1H-pyrazol-5(4H)-one in aqueous and acetonitrile medium
  作者：Shuangshuang Xu、Zhansheng Wang、Xiuling Li、Liangce Rong、Shu-Jiang Tu

  DOI：10.1016/j.tet.2016.07.073

  日期：2016.9

  A facile and efficient synthesis of pyrazolo[3,4-b]pyridines, indeno[1,2-b]pyrazolo[4,3-e]pyridine and benzo[h]pyrazolo[3,4-b]quinoline derivatives from the reaction of α,β-unsaturated ketone and 3-amino-1-phenyl-1H-pyrazol-5(4H)-one under mild conditions was reported. This reaction could be operated in aqueous and acetonitrile medium. The other advantages of this reaction were simple operation, mild

  一种高效合成吡唑并[3,4- b ]吡啶，茚并[1,2- b ]吡唑并[4,3- e ]吡啶和苯并[ h ]吡唑并[3,4- b ]喹啉衍生物。报道了α，β-不饱和酮与3-氨基-1-苯基-1 H-吡唑-5（4 H）-one在温和条件下的反应。该反应可以在含水和乙腈介质中进行。该反应的其他优点是操作简单，反应条件温和，产率高和底物范围广。此外，3-amino-1-phenyl-1 H -pyrazol-5（4 H-一是用于合成这些杂环化合物的有效试剂。从实验事实来看，他的催化剂p -TSA·H 2 O和水都在该合成中起关键作用。
• A Porphyrin-Inspired Iron Catalyst for Asymmetric Epoxidation of Electron-Deficient Olefins
  作者：Wen Dai、Guosong Li、Bo Chen、Lianyue Wang、Shuang Gao

  DOI：10.1021/acs.orglett.5b00018

  日期：2015.2.20

  An in situ formed porphyrin-inspired iron complex that catalyzes asymmetric epoxidation of di- and trisubstituted enones is described. The reaction provides highly enantioenriched α,β-epoxyketones (up to 99% ee). The practical utility of the new catalyst system is demonstrated by the gram-scale synthesis of optically pure epoxide. Hammett analysis suggests that the transition state of the reaction

  描述了一种原位形成的受卟啉启发的铁络合物，该络合物催化二取代和三取代的烯酮的不对称环氧化。该反应提供高度对映体富集的α，β-环氧酮（高达99％ee）。克级合成光学纯的环氧化物证明了新型催化剂体系的实际实用性。Hammett分析表明，反应的过渡态是电子要求的，而活性氧化剂是亲电子的。
• Enantioselective phospha-Michael reaction of diethyl phosphonate with exocyclic α,β-unsaturated benzocyclic ketones catalyzed by a dinuclear zinc−AzePhenol catalyst
  作者：Na Shao、Yong-Yang Luo、Hui-Jie Lu、Yuan-Zhao Hua、Min-Can Wang

  DOI：10.1016/j.tet.2018.03.016

  日期：2018.4

  The dinuclear zinc complexes as high performance catalysts were used to catalyze phospha-Michael reaction of exocyclic α,β-unsaturated benzocyclic ketones under mild conditions, and the desired products possessing 1-indanones or 1-tetralones skeleton were obtained with excellent enantioselectivities of up to 99%/99% ee and yields of up to 99%. The absolute stereochemistry of the major products catalyzed

  用双核锌配合物作为高性能催化剂，在温和条件下催化环外α，β-不饱和苯并环酮的磷-迈克尔反应，得到所需的具有1-茚满酮或1-四酮骨架的产物，其对映体选择性最高可达ee为99％/ 99％，产率高达99％。通过催化主要产物的绝对立体化学（R，R） - L1被确定为在（R，R），通过X射线结晶学分析-构型的3d。观察到正非线性效应，并提出了可能的机理。