2'-甲基-2,2,2-三氟苯乙酮 | 341-39-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2'-甲基-2,2,2-三氟苯乙酮
• 英文名称: 2,2,2-trifluoro-1-(o-tolyl)ethanone
• 英文别名: 2,2,2-trifluoro-1-(o-tolyl)ethan-1-one；2'-methyl-2,2,2-trifluoroacetophenone；2,2,2-trifluoro-1-(2-methylphenyl)ethanone
• CAS: 341-39-9
• 化学式: C₉H₇F₃O
• 分子量: 188.149
• InChiKey: JHQDBQYFKARISA-UHFFFAOYSA-N

物化性质

• 沸点：
  163-163.5 °C(Press: 741 Torr)
• 密度：
  1.224±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  4

安全信息

• 海关编码：
  2914700090
• 储存条件：
  存储条件：室温、密封、干燥

反应信息

• 作为反应物：
  描述：

  2'-甲基-2,2,2-三氟苯乙酮 在 palladium on activated charcoal sodium hydroxide 、 sodium tetrahydroborate 、 N-溴代丁二酰亚胺(NBS) 、 2-硝基丙烷 、 氢气 、 sodium ethanolate 、 sodium hydride 、 过氧化苯甲酰 作用下， 以 1,4-二氧六环 、 甲醇 、 四氯化碳 、 乙醚 、 乙醇 、 水 为溶剂， 反应 18.0h， 生成 <2-(2,2,2-Trifluoroethyl)phenyl>diazomethane
  参考文献：
  名称：

  Intramolecular Reactivity of Arylcarbenes: Derivatives of o-Tolylcarbene

  摘要：

  Various CH(2)X groups have been attached to the ortho position of phenylcarbene. If 2'- or 3'-C-H bonds are present, as in 23 (X = Me), 71 (X = CMe(3)), and 58 (X = SiMe(3)), C-H insertion leading to five- or six-membered rings predominates in the gas phase and competes with intermolecular reactions in solution. The formation of benzocyclobutenes via insertion into 1'-C-H bonds is a very minor reaction path of 23 and 71. In contrast, 58 produces substantial amounts of the benzocyclobutene 59 by way of C-Si insertion, particularly in the gas phase. Insertion into the Si-Me bonds of 58 also occurs while the C-F bonds of 37 (X = CF3) and 50 (X = Fl are inert. In the gas phase, 37 and 50 give mainly benzocyclobutenes whereas intermolecular reactions prevail in solution. The effects of sensitization and of solvent polarity suggest that benzocyclobutenes arise from singlet arylcarbenes. The amount of carbene-carbene rearrangement decreases in the order 7 (X = H) > 37 (X = CF3) > 23 (X = Me); no rearrangement was observed with 50 (X = Fl, 58 (X = SiMe(3)), and 71 (X = CMe(3)).

  DOI：

  10.1021/jo00093a014
• 作为产物：
  描述：

  2-甲基苯甲醛 在 重铬酸吡啶 、 四丁基氟化铵 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 24.17h， 生成 2'-甲基-2,2,2-三氟苯乙酮
  参考文献：
  名称：

  Catalytic highly enantioselective transfer hydrogenation of β-trifluoromethyl nitroalkenes. An easy and general entry to optically active β-trifluoromethyl amines

  摘要：

  通过β-三氟甲基硝基烯烃的有机催化转移氢化，提供了一种简单、通用且高对映选择性的制备光学活性β-三氟甲基胺的方法。

  DOI：

  10.1039/c4cc07801b

文献信息

• Copper-Catalyzed Highly Enantioselective Difluoroalkylation of Secondary Propargyl Sulfonates with Difluoroenoxysilanes
  作者：Xing Gao、Ran Cheng、Yu-Lan Xiao、Xiao-Long Wan、Xingang Zhang

  DOI：10.1016/j.chempr.2019.09.012

  日期：2019.11

  remains a challenging topic. Here, we report a copper-catalyzed highly enantioselective difluoroalkylation of secondary propargyl sulfonates using difluoroenoxysilanes. The reaction proceeds under mild reaction conditions with Cu(I)/PyBox as the catalyst. The advantages of this method include high efficiency, high enantioselectivity (enantiomeric ratio up to 99:1), and excellent functional-group tolerance

  尽管最近在过渡金属催化的氟代烷基化方面取得了令人瞩目的进展，但相关的不对称氟代烷基化仍然是一个具有挑战性的话题。在这里，我们报道了使用二氟烯氧基硅烷对仲炔丙基磺酸盐进行铜催化的高对映选择性二氟烷基化反应。反应在温和的反应条件下以Cu（I）/ PyBox作为催化剂进行。该方法的优点包括高效，高对映选择性（对映体比例高达99：1）和出色的官能团耐受性。可以将所得的手性炔丙基α，α-二氟酮转化为对映异构体富集的炔丙基二氟甲基化化合物，为获得广泛的手性二氟甲基化化合物提供了一个良好的平台，该范围在药物化学和材料科学中具有重要意义。
• NHC-Catalyzed ε-Umpolung via <i>p</i>-Quinodimethanes and Its Nucleophilic Addition to Ketones
  作者：Lei Dai、Song Ye

  DOI：10.1021/acscatal.9b04409

  日期：2020.1.17

  An unprecedented NHC-catalyzed generation of p-quinodimethanes via ε-umpolung of 4-(chloromethyl)benzaldehydes and the following ε-addition to active ketones was developed. A series of active ketones, such as trifluoromethyl ketones and 1,2-dicarbonyl compounds, worked well for the reaction, giving the corresponding trifluoromethyl alcohols and α-hydroxyl carbonyl compounds in good yields.

  开发了一种空前的NHC催化产物，它是通过4-（氯甲基）苯甲醛的ε-苯甲酸酯和随后的ε-添加到活性酮中而生成的对-喹二甲烷。一系列活性酮，例如三氟甲基酮和1,2-二羰基化合物，对反应反应良好，从而以高收率得到相应的三氟甲基醇和α-羟基羰基化合物。
• [EN] COMPLEXES FOR NUCLEOPHILIC, RADICAL, AND ELECTROPHILIC POLYFLUOROALKYLATION<br/>[FR] COMPLEXES POUR POLYFLUOROALKYLATION NUCLÉOPHILE, RADICALAIRE ET ÉLECTROPHILE
  申请人：UNIV MICHIGAN REGENTS

  公开号：WO2017223406A1

  公开（公告）日：2017-12-28

  Disclosed herein are borazine complexes and use of the same in perfluoroalkylation reactions.

  本文披露了硼氮烷配合物及其在全氟烷基化反应中的应用。
• Rhodium-Catalyzed Ring Opening of Benzocyclobutenols with Site-Selectivity Complementary to Thermal Ring Opening
  作者：Naoki Ishida、Shota Sawano、Yusuke Masuda、Masahiro Murakami

  DOI：10.1021/ja309013a

  日期：2012.10.24

  A rhodium catalyst induced ring opening of benzocyclobutenols with selective cleavage of the C(sp(2))-C(sp(3)) bond adjacent to the hydroxyl group. The site-selectivity markedly contrasted with that of their thermal ring-opening reaction. The rhodium-catalyzed ring opening led to the development of a new alkyne insertion reaction constructing a dihydronaphthalene framework.

  铑催化剂诱导苯并环丁烯醇开环，选择性裂解与羟基相邻的 C(sp(2))-C(sp(3)) 键。位点选择性与它们的热开环反应形成鲜明对比。铑催化的开环导致了构建二氢萘骨架的新型炔烃插入反应的发展。
• Synthesis of Perfluoroalkyl-Substituted Vinylcyclopropanes by Way of Enhanced Neighboring Group Participation
  作者：Christopher B. Kelly、Michael A. Mercadante、Emma R. Carnaghan、Matthew J. Doherty、Diana C. Fager、John J. Hauck、Allyson E. MacInnis、Leon J. Tilley、Nicholas E. Leadbeater

  DOI：10.1002/ejoc.201500565

  日期：2015.7

  homoallyl alcohols is disclosed. Destabilization of the cationic intermediate by the electron-withdrawing CF3 group greatly enhances neighboring group participation of the alkene, allowing ring closure to predominate. The reaction can be extended to the difluoromethyl and pentafluoroethyl group, enabling the preparation of a diverse array of fluoroalkyl-substituted vinylcyclopropanes.

  公开了一种用于从 α-CF3 高烯丙醇制备三氟甲基取代的乙烯基环丙烷的简单、高产、两步、一锅法。吸电子 CF3 基团对阳离子中间体的不稳定极大地增强了烯烃的相邻基团参与，从而使闭环占主导地位。该反应可以扩展到二氟甲基和五氟乙基，从而能够制备多种氟代烷基取代的乙烯基环丙烷。