2-(1-Hydroxypropyl)-1-<2-(trimethylsilyl)ethynyl>benzene | 166757-16-0

• 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: 2-(1-Hydroxypropyl)-1-<2-(trimethylsilyl)ethynyl>benzene
• 英文别名: 1-(2-((trimethylsilyl)ethynyl)phenyl)propan-1-ol；1-[2-(2-Trimethylsilylethynyl)phenyl]propan-1-ol
• CAS: 166757-16-0
• 化学式: C₁₄H₂₀OSi
• 分子量: 232.398
• InChiKey: MFOJMAAYIDEFNF-UHFFFAOYSA-N

物化性质

• 沸点：
  308.0±34.0 °C(predicted)
• 密度：
  0.97±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.36
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-(1-Hydroxypropyl)-1-<2-(trimethylsilyl)ethynyl>benzene 在 copper(l) iodide 、 bis(triphenylphosphine)palladium(II)-chloride 、 四丁基氟化铵 、 三乙胺 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 32.0h， 生成 Methyl 2-<2-<2-(1-hydroxy-1-propyl)phenyl>ethynyl>benzoate
  参考文献：
  名称：

  An Unusual Example of a 6-Endo-Dig Addition to an Unactivated Carbon-Carbon Triple Bond

  摘要：

  Methyl 2-[2-[2-(1-hydroxy-1-ethyl)phenyl]ethynyl]benzoate was prepared as an intermediate for subsequent conversion to an a-diazo ketone. Under the basic conditions used to hydrolyze the methyl ester, the neighboring hydroxyl functionality underwent reaction with the unactivated acetylenic group, producing a benzopyranyl-substituted alpha-diazoacetophenone. Treatment of this diazocarbonyl compound with a catalytic quantity of rhodium(II) mandelate afforded a novel dibenzo[a,e]cyclononenone derivative. The reaction proceeds via an initially formed oxonium ylide which rearranges further by means of a 1,2-alkyl shift. A prime factor in determining the direction of internal cyclization to the triple bond is the presence of the carbomethoxy group in the ortho position of the beta-phenyl ring. Thus, in contrast with related systems which exhibit a clear preference for 5-exo-dig cyclization at the acetylenic center, the 6-endo-dig addition is the preferred pathway for the o-formyl- and o-carbomethoxy-substituted alkynyl alcohols. Careful monitoring of the reaction actually showed that the reaction proceeds by initial formation of the 5-exo-dig product followed by a novel rearrangement to the 6-endo product.

  DOI：

  10.1021/jo00122a047
• 作为产物：
  描述：

  邻溴苯甲醛 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 magnesium 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 9.17h， 生成 2-(1-Hydroxypropyl)-1-<2-(trimethylsilyl)ethynyl>benzene
  参考文献：
  名称：

  Metal-free synthesis of 2-aminonaphthalenes by intramolecular transannulation of 1-sulfonyl-4-(2-alkenylphenyl)-1,2,3-triazoles

  摘要：

  通过 1-磺酰基-4-(2-烯基苯基)-1,2,3-三唑的分子内转annulation，以拟议的酮亚胺为关键中间体，实现了 2-氨基萘的简便无金属合成。

  DOI：

  10.1039/c7ob00637c

文献信息

• Exploiting Hydrazones To Improve the Efficiency of 6π-Electrocyclization Reactions of 1-Azatrienes
  作者：Matthew P. Ball-Jones、Jasper Tyler、Helena Mora-Radó、Werngard Czechtizky、María Méndez、Joseph P. A. Harrity

  DOI：10.1021/acs.orglett.9b02455

  日期：2019.9.6

  The greater geometric lability of hydrazones compared to that of oxime ethers is used as a basis to overcome the reluctance of Z-oxime ether azatrienes to undergo electrocyclization toward the synthesis of borylated (heteroaromatic) pyridines and ring-fused analogues. Such hydrazones now allow access to previously inaccessible tri- and tetrasubstituted 3-borylpyridines in high yields.

  与肟醚相比，具有更大的几何不稳定性，被用作克服Z-肟醚氮杂三烯不愿意进行电环化以合成硼酸化（杂芳族）吡啶和环稠合类似物的基础。这种现在可以以高收率获得以前难以获得的三和四取代的3-硼基吡啶。
• Metal-free synthesis of 2-aminonaphthalenes by intramolecular transannulation of 1-sulfonyl-4-(2-alkenylphenyl)-1,2,3-triazoles
  作者：Ze-Feng Xu、Xing Yu、Dongdong Yang、Chuan-Ying Li

  DOI：10.1039/c7ob00637c

  日期：——

  A facile metal-free synthesis of 2-aminonaphthalenes by intramolecular transannulation of 1-sulfonyl-4-(2-alkenylphenyl)-1,2,3-triazoles was realized with the proposed ketenimine as the key intermediate.

  通过 1-磺酰基-4-(2-烯基苯基)-1,2,3-三唑的分子内转annulation，以拟议的酮亚胺为关键中间体，实现了 2-氨基萘的简便无金属合成。
• Au(I)‐Catalyzed 6‐ <i>endo</i> ‐ <i>dig</i> Cyclizations of Aromatic 1, <scp>5‐Enynes</scp> to 2‐(Naphthalen‐2‐yl)anilines Leading to Divergent Syntheses of Benzo[ <i>α</i> ]carbazole, Benzo[ <i>c</i> , <i>h</i> ]cinnoline and Dibenzo[ <i>i</i> ]phenanthridine Derivatives
  作者：Jiayue Fu、Bingbing Li、Xiugui Wang、Qida Liang、Xiaoshi Peng、Lu Yang、Tao Wan、Xinxiu Wang、Bin Lin、Maosheng Cheng、Yongxiang Liu

  DOI：10.1002/cjoc.202100582

  日期：2022.1

  systematically and a possible mechanism was proposed. The derivatization of 2-(naphthalen-2-yl)aniline was carried out to facile access to benzo[α]carbazole, benzo[c,h]cinnoline and dibenzo[i]phenanthridine derivatives in a divergent way.

  的金（I） -催化6-内-挖芳香族1,5-烯炔的环化的开发是为了合成2-（萘-2-基）苯胺。系统地检查了这种环化的官能团耐受性，并提出了可能的机制。进行2-(萘-2-基)苯胺的衍生化，以不同的方式获得苯并[ α ]咔唑、苯并[ c , h ]肉啉和二苯并[ i ]菲啶衍生物。
• An Unusual Example of a 6-Endo-Dig Addition to an Unactivated Carbon-Carbon Triple Bond
  作者：Albert Padwa、Keith E. Krumpe、M. David Weingarten

  DOI：10.1021/jo00122a047

  日期：1995.9

  Methyl 2-[2-[2-(1-hydroxy-1-ethyl)phenyl]ethynyl]benzoate was prepared as an intermediate for subsequent conversion to an a-diazo ketone. Under the basic conditions used to hydrolyze the methyl ester, the neighboring hydroxyl functionality underwent reaction with the unactivated acetylenic group, producing a benzopyranyl-substituted alpha-diazoacetophenone. Treatment of this diazocarbonyl compound with a catalytic quantity of rhodium(II) mandelate afforded a novel dibenzo[a,e]cyclononenone derivative. The reaction proceeds via an initially formed oxonium ylide which rearranges further by means of a 1,2-alkyl shift. A prime factor in determining the direction of internal cyclization to the triple bond is the presence of the carbomethoxy group in the ortho position of the beta-phenyl ring. Thus, in contrast with related systems which exhibit a clear preference for 5-exo-dig cyclization at the acetylenic center, the 6-endo-dig addition is the preferred pathway for the o-formyl- and o-carbomethoxy-substituted alkynyl alcohols. Careful monitoring of the reaction actually showed that the reaction proceeds by initial formation of the 5-exo-dig product followed by a novel rearrangement to the 6-endo product.