4-bromo-3-n-butylanisole | 1189354-07-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 4-bromo-3-n-butylanisole
• 英文别名: 1-Bromo-2-butyl-4-methoxybenzene；1-bromo-2-butyl-4-methoxybenzene
• CAS: 1189354-07-1
• 化学式: C₁₁H₁₅BrO
• 分子量: 243.143
• InChiKey: CRXDIKOZMDJDQA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  4-bromo-3-n-butylanisole 在 正丁基锂 、 (1,5-cyclooctadiene)(methoxy)iridium(I) dimer 、 3,4,7,8-四甲基-1,10-菲罗啉 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 48.5h， 生成 (4-methoxy-2-(1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butyl)phenyl)dimethylsilane
  参考文献：
  名称：

  Iridium-Catalyzed Borylation of Secondary Benzylic C–H Bonds Directed by a Hydrosilane

  摘要：

  Most functionalizations of C-H bonds by main-group reagents occur at aryl or methyl groups. We describe a highly regioselective borylation of secondary benzylic C-H bonds catalyzed by an iridium precursor and 3,4,7,8-tetramethyl-1,10-phenanthroline as the ligand. The reaction is directed to the benzylic position by a hydrosilyl substituent. This hydrosilyl directing group is readily deprotected or transformed to other functional groups after the borylation reaction, providing access to a diverse set of secondary benzylboronate esters by C-H borylation chemistry.

  DOI：

  10.1021/ja403462b
• 作为产物：
  描述：

  1-bromo-2-(but-3-en-1-yl)-4-methoxybenzene 在 一水合肼 、 邻硝基苯磺酰氯 作用下， 以 乙腈 为溶剂， 反应 18.0h， 生成 4-bromo-3-n-butylanisole
  参考文献：
  名称：

  Iridium-Catalyzed Borylation of Secondary Benzylic C–H Bonds Directed by a Hydrosilane

  摘要：

  Most functionalizations of C-H bonds by main-group reagents occur at aryl or methyl groups. We describe a highly regioselective borylation of secondary benzylic C-H bonds catalyzed by an iridium precursor and 3,4,7,8-tetramethyl-1,10-phenanthroline as the ligand. The reaction is directed to the benzylic position by a hydrosilyl substituent. This hydrosilyl directing group is readily deprotected or transformed to other functional groups after the borylation reaction, providing access to a diverse set of secondary benzylboronate esters by C-H borylation chemistry.

  DOI：

  10.1021/ja403462b

文献信息

• Synthesis of Novel Structurally Simplified Estrogen Analogues with Electron-Donating Groups in Ring A
  作者：Lutz Tietze、Carsten Vock、Ilga Krimmelbein、Linda Nacke

  DOI：10.1055/s-0029-1216810

  日期：2009.6

  A library of 25 novel estrogen analogues were prepared in five to eight steps from mostly commercially available substituted anisoles via bromination, formylation, Corey-Fuchs reaction, elimination, and Sonogashira reaction.

  合成了一系列25种新型雌激素类似物，这些化合物通过五个至八个步骤，主要以市售的取代茴香醚为原料，经过溴化、甲醛化、Corey-Fuchs反应、消除反应及Sonogashira反应制备得到。
• Iridium-Catalyzed Borylation of Secondary Benzylic C–H Bonds Directed by a Hydrosilane
  作者：Seung Hwan Cho、John F. Hartwig

  DOI：10.1021/ja403462b

  日期：2013.6.5

  Most functionalizations of C-H bonds by main-group reagents occur at aryl or methyl groups. We describe a highly regioselective borylation of secondary benzylic C-H bonds catalyzed by an iridium precursor and 3,4,7,8-tetramethyl-1,10-phenanthroline as the ligand. The reaction is directed to the benzylic position by a hydrosilyl substituent. This hydrosilyl directing group is readily deprotected or transformed to other functional groups after the borylation reaction, providing access to a diverse set of secondary benzylboronate esters by C-H borylation chemistry.