phenyl(2',4',6'-trimethyl[1,1'-biphenyl]-2-yl)methanone | 183313-52-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二芳基庚烷
• 英文名称: phenyl(2',4',6'-trimethyl[1,1'-biphenyl]-2-yl)methanone
• 英文别名: Phenyl-[2-(2,4,6-trimethylphenyl)phenyl]methanone
• CAS: 183313-52-2
• 化学式: C₂₂H₂₀O
• 分子量: 300.4
• InChiKey: MPZLBPVFRJXKBT-UHFFFAOYSA-N

物化性质

• 熔点：
  121.0-124.4 °C
• 沸点：
  447.8±24.0 °C(Predicted)
• 密度：
  1.066±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 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：

  phenyl(2',4',6'-trimethyl[1,1'-biphenyl]-2-yl)methanone 在 氢氧化钾 、 一水合肼 、 sodium sulfate 、 mercury(II) oxide 作用下， 以 乙醚 、 正丁醇 为溶剂， 反应 108.0h， 生成 (2',4',6'-trimethylbiphenyl-2-yl)phenyldiazomethane
  参考文献：
  名称：

  Intramolecular reactivity of arylcarbenes: Biphenyl-2-ylcarbenes

  摘要：

  Biphenyl-2-ylcarbenes, 2-ArC(6)H(4)CR, were generated photolytically and thermally from diazo precursors. Cyclization, leading to fluorenes, competes with capture of the carbenes by methanol but proceeds faster than intramolecular hydrogen shifts (with R = Me) and intermolecular C-H insertion reactions (with R = H in cyclohexane). By comparison of product ratios with kinetic data for related carbenes from the literature, the cyclization rate is estimated as ca 10(11) s(-1). The intramolecular reactivity of biphenyl-2-ylcarbenes is nor significantly attenuated by variation of R (R = H, Me, Ph). Very minor effects of triplet sensitization and methanol quenching indicate that fluorenes arise from spin-equilibrated biphenyl-2-ylcarbenes, presumably from the singlet state. When Ar = mesityl, the carbene predominantly inserts into C-H bonds of the 2'-methyl groups, giving rise to a dihydrophenanthrene. Formation of a fluorene derivative, by formal insertion into C-C bonds, occurs as a minor process. This unprecedented reaction points to intervention of an o-xylylene in which the methyl group migrates. Laser flash photolysis (LFP) of 2-PhC(6)H(4)CN(2)Ph generates a transient absorption which is due to the T-0-->T-n transition of 9-phenylfluorene rather than to the presumed o-xylylene. On LFP of 2-ArC(6)H(4)CN(2)Ph in trifluoroethanol-acetonitrile, protonation of the carbenes gives rise to carbocations, 2-ArC(6)H(4)CH(+)Ph. The transient absorption spectra of these cations are strongly influenced by twisting about the Ar-Ar bond (Ar = Ph < o-tolyl < mesityl) whereas the rates of nucleophilic capture vary only slightly. Biphenyl-2-ylcarbenium ions (Ar = R = Ph) cyclize more slowly than the analogous carbenes, by a factor of greater than or equal to 10(4).

  DOI：

  10.1002/(sici)1099-1395(199609)9:9<598::aid-poc825>3.0.co;2-l
• 作为产物：
  描述：

  2-(2-甲氧基苯基)-4,4-二甲基-2-噁唑啉 在 盐酸 、 sodium hydroxide 作用下， 生成 phenyl(2',4',6'-trimethyl[1,1'-biphenyl]-2-yl)methanone
  参考文献：
  名称：

  Intramolecular reactivity of arylcarbenes: Biphenyl-2-ylcarbenes

  摘要：

  Biphenyl-2-ylcarbenes, 2-ArC(6)H(4)CR, were generated photolytically and thermally from diazo precursors. Cyclization, leading to fluorenes, competes with capture of the carbenes by methanol but proceeds faster than intramolecular hydrogen shifts (with R = Me) and intermolecular C-H insertion reactions (with R = H in cyclohexane). By comparison of product ratios with kinetic data for related carbenes from the literature, the cyclization rate is estimated as ca 10(11) s(-1). The intramolecular reactivity of biphenyl-2-ylcarbenes is nor significantly attenuated by variation of R (R = H, Me, Ph). Very minor effects of triplet sensitization and methanol quenching indicate that fluorenes arise from spin-equilibrated biphenyl-2-ylcarbenes, presumably from the singlet state. When Ar = mesityl, the carbene predominantly inserts into C-H bonds of the 2'-methyl groups, giving rise to a dihydrophenanthrene. Formation of a fluorene derivative, by formal insertion into C-C bonds, occurs as a minor process. This unprecedented reaction points to intervention of an o-xylylene in which the methyl group migrates. Laser flash photolysis (LFP) of 2-PhC(6)H(4)CN(2)Ph generates a transient absorption which is due to the T-0-->T-n transition of 9-phenylfluorene rather than to the presumed o-xylylene. On LFP of 2-ArC(6)H(4)CN(2)Ph in trifluoroethanol-acetonitrile, protonation of the carbenes gives rise to carbocations, 2-ArC(6)H(4)CH(+)Ph. The transient absorption spectra of these cations are strongly influenced by twisting about the Ar-Ar bond (Ar = Ph < o-tolyl < mesityl) whereas the rates of nucleophilic capture vary only slightly. Biphenyl-2-ylcarbenium ions (Ar = R = Ph) cyclize more slowly than the analogous carbenes, by a factor of greater than or equal to 10(4).

  DOI：

  10.1002/(sici)1099-1395(199609)9:9<598::aid-poc825>3.0.co;2-l

文献信息

• Cobalt-Catalyzed Cross-Coupling Reactions of Heterocyclic Chlorides with Arylmagnesium Halides and of Polyfunctionalized Arylcopper Reagents with Aryl Bromides, Chlorides, Fluorides and Tosylates
  作者：Paul Knochel、Tobias Korn、Matthias Schade、Murthy Cheemala、Stefan Wirth、Simon Guevara、Gérard Cahiez

  DOI：10.1055/s-2006-950290

  日期：2006.11

  A range of aromatic organocopper or organomagnesium compounds undergo smooth cross-coupling reactions with aryl bromides, chlorides, fluorides and tosylates, leading to polyfunctionalized aromatics or heterocycles in the presence of cobalt salts (5-7.5 mol%) as catalysts. Very mild reaction conditions are needed and, in the case of cross-coupling with organocopper compounds, Bu4NI (1 equiv) and 4-fluorostyrene (20 mol%) are essential as promoters for successful couplings.

  一系列芳香族有机铜或有机镁化合物与芳基溴、氯、氟及托烯磺酸酯进行平滑的交叉偶联反应，在钴盐（5-7.5 mol%）作为催化剂的情况下，产生多功能化的芳香族化合物或杂环化合物。反应条件非常温和，且在与有机铜化合物交叉偶联的情况下，四丁基氮化铵（1当量）和4-氟苯乙烯（20 mol%）是成功偶联所必需的促进剂。
• Cobalt(II)-Catalyzed Cross-Coupling between Polyfunctional Arylcopper Reagents and Aryl Fluorides or Tosylates
  作者：Tobias J. Korn、Matthias A. Schade、Stefan Wirth、Paul Knochel

  DOI：10.1021/ol0529142

  日期：2006.2.1

  of functionalized arylmagnesium halides with CuCN.2LiCl undergo smooth cross-coupling reactions with aryl fluorides and tosylates bearing a carbonyl function in the ortho position in the presence of Co(acac)(2) (7.5 mol %), Bu(4)NI (1 equiv), and 4-fluorostyrene (20 mol %) as promoters in DME/THF/DMPU leading to polyfunctional aromatics or heterocycles.

  [反应：参见文本]通过将官能化的芳基卤化镁与CuCN.2LiCl进行金属转移而制备的有机铜化合物与芳基氟化物进行平滑的交叉偶联反应，并在存在Co（acac）（2）的情况下在邻位带有羰基功能的甲苯磺酸盐（7.5 mol％），Bu（4）NI（1当量）和4-氟苯乙烯（20 mol％）作为DME / THF / DMPU中的促进剂，导致多官能芳族化合物或杂环。