(R)-N,N-diethyl 4'-bromo-4-(1-methylheptyloxy)biphenyl-2-carboxamide | 666830-01-9

• 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: (R)-N,N-diethyl 4'-bromo-4-(1-methylheptyloxy)biphenyl-2-carboxamide
• CAS: 666830-01-9
• 化学式: C₂₅H₃₄BrNO₂
• 分子量: 460.454
• InChiKey: QAHUHSSGBOBZQM-LJQANCHMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.34
• 重原子数：
  29.0
• 可旋转键数：
  11.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.48
• 拓扑面积：
  29.54
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  (R)-N,N-diethyl 4'-bromo-4-(1-methylheptyloxy)biphenyl-2-carboxamide 在 盐酸 、 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 正丁基锂 、 N,N-二异丙基乙胺 、 N,N'-二环己基碳二亚胺 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 正己烷 、 二氯甲烷 、 异丙醇 为溶剂， 反应 24.91h， 生成 (R)-7-((R)-1-methylheptyloxy)-2-((4-undecyloxybenzoyl)oxy)fluoren-9-ol
  参考文献：
  名称：

  Directed Metalation Route to Ferroelectric Liquid Crystals with a Chiral Fluorenol Core:  The Effect of Restricted Rotation on Polar Order

  摘要：

  A new series of smectic C* (SmC*) mesogens containing a chiral (R)-2-octyloxy side chain and either a fluorenone (2a-e) or chiral fluorenol (3a-e) core were synthesized using a combined directed ortho metalation-directed remote metalation strategy. The SmC* phase formed by the fluorenol mesogens is more stable and has a wider temperature range than that formed by the fluorenone mesogens, which may be ascribed to intermolecular hydrogen bonding according to variable-temperature FT-IR measurements. The C(11) fluorenol mesogens (R,R)-3d and (S,R)-3d were obtained in diastereomerically pure form and gave reduced polarization (P(o)) values of +106 and +183 nC/cm(2), respectively, at 10 K below the SmA*-SmC* phase transition temperature. The difference in P. values suggests that the chiral fluorenol core contributes to the spontaneous polarization of the SmC* phase. This is ascribed to the bent shape of the fluorenol core, which should restrict its rotation with respect to the side chains in the SmC* phase and favor one orientation of its transverse dipole moment along the polar axis, and to steric coupling of the core to the chiral 2-octyloxy side chain.

  DOI：

  10.1021/ja038920f
• 作为产物：
  描述：

  N,N-二乙基-3-甲氧基苯甲酰胺 在 四(三苯基膦)钯 、 四甲基乙二胺 、 偶氮二甲酸二异丙酯 、 四丁基氟化铵 、 仲丁基锂 、 potassium carbonate 、 三苯基膦 作用下， 以 四氢呋喃 、 乙二醇二甲醚 、 乙醚 、 正己烷 、 二氯甲烷 为溶剂， 反应 43.0h， 生成 (R)-N,N-diethyl 4'-bromo-4-(1-methylheptyloxy)biphenyl-2-carboxamide
  参考文献：
  名称：

  Directed Metalation Route to Ferroelectric Liquid Crystals with a Chiral Fluorenol Core:  The Effect of Restricted Rotation on Polar Order

  摘要：

  A new series of smectic C* (SmC*) mesogens containing a chiral (R)-2-octyloxy side chain and either a fluorenone (2a-e) or chiral fluorenol (3a-e) core were synthesized using a combined directed ortho metalation-directed remote metalation strategy. The SmC* phase formed by the fluorenol mesogens is more stable and has a wider temperature range than that formed by the fluorenone mesogens, which may be ascribed to intermolecular hydrogen bonding according to variable-temperature FT-IR measurements. The C(11) fluorenol mesogens (R,R)-3d and (S,R)-3d were obtained in diastereomerically pure form and gave reduced polarization (P(o)) values of +106 and +183 nC/cm(2), respectively, at 10 K below the SmA*-SmC* phase transition temperature. The difference in P. values suggests that the chiral fluorenol core contributes to the spontaneous polarization of the SmC* phase. This is ascribed to the bent shape of the fluorenol core, which should restrict its rotation with respect to the side chains in the SmC* phase and favor one orientation of its transverse dipole moment along the polar axis, and to steric coupling of the core to the chiral 2-octyloxy side chain.

  DOI：

  10.1021/ja038920f