(4R)-(3,4-Dichlorophenyl)benzenebutanoic acid 1,1-dimethylethyl ester | 147189-42-2

• 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: (4R)-(3,4-Dichlorophenyl)benzenebutanoic acid 1,1-dimethylethyl ester
• 英文别名: (R)-t-butyl 4-(3,4-dichlorophenyl)-4-phenylbutanoate；tert-butyl (4R)-4-(3,4-dichlorophenyl)-4-phenylbutanoate
• CAS: 147189-42-2
• 化学式: C₂₀H₂₂Cl₂O₂
• 分子量: 365.299
• InChiKey: CERDTRSYADHUFI-MRXNPFEDSA-N

物化性质

• 沸点：
  457.9±45.0 °C(Predicted)
• 密度：
  1.168±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.1
• 重原子数：
  24
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (4R)-(3,4-Dichlorophenyl)benzenebutanoic acid 1,1-dimethylethyl ester 在 polyphosphoric acid 作用下， 反应 3.0h， 以94%的产率得到4-(3,4-二氯苯)-3,4-二氢-2H-萘-1-酮
  参考文献：
  名称：

  Nickel/Bis(oxazoline)-Catalyzed Asymmetric Negishi Arylations of Racemic Secondary Benzylic Electrophiles to Generate Enantioenriched 1,1-Diarylalkanes

  摘要：

  A tertiary stereogenic center that bears two different aryl substituents is found in a variety of bioactive compounds, including medicines such as Zoloft and Detrol. We have developed an efficient method for the synthesis of enantioenriched 1,1-diarylalkanes from readily available racemic benzylic alcohols. Formation of a benzylic mesylate (which is not isolated), followed by treatment with an arylzinc reagent, LiI, and a chiral nickel/bis(oxazoline) catalyst, furnishes the Negishi cross-coupling product in high ee and good yield. A wide array of functional groups (e.g., an aryl iodide, a thiophene, and an N-Boc-indole) are compatible with the mild reaction conditions. This method has been applied to a gram-scale synthesis of a precursor to Zoloft.

  DOI：

  10.1021/ja408561b
• 作为产物：
  描述：

  4-(3,4-Dichlorophenyl)-4-oxobutanoic acid 1,1-dimethylethyl ester 在 硼烷 、 三乙胺 、 (S)-2-甲基-CBS-恶唑硼烷 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 17.33h， 生成 (4R)-(3,4-Dichlorophenyl)benzenebutanoic acid 1,1-dimethylethyl ester
  参考文献：
  名称：

  SN2铜酸盐置换活化手性苄醇合成4（S）-（3,4-二氯苯基）-3,4-二氢-1（2H）-萘酮

  摘要：

  报道了制备4（S）-（3,4-二氯苯基）-3,4-二氢-1（2H）-萘酮的两种途径。最有效的途径是通过催化不对称的恶唑硼烷催化的γ-酮酸酯还原反应生成手性苄醇，然后将其活化并以SN2方式用较高级的铜酸盐置换。所得叔丁酯的分子内Friedel-Crafts环化得到标题化合物。

  DOI：

  10.1016/s0040-4020(01)88330-7

文献信息

• Synthesis of 4(S)-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenone by SN2 cuprate displacement of an activated chiral benzylic alcohol
  作者：George J. Quallich、Teresa M. Woodall

  DOI：10.1016/s0040-4020(01)88330-7

  日期：1992.11

  Two routes for the preparation of 4(S)-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenone are reported. The most efficient route generates a chiral benzylic alcohol by catalytic asymmetric oxazaborolidine reduction of a γ-ketoester that is subsequently activated and displaced in an SN2 manner with a higher order cuprate. Intramolecular Friedel-Crafts cyclization of the resulting t-butylester affords

  报道了制备4（S）-（3,4-二氯苯基）-3,4-二氢-1（2H）-萘酮的两种途径。最有效的途径是通过催化不对称的恶唑硼烷催化的γ-酮酸酯还原反应生成手性苄醇，然后将其活化并以SN2方式用较高级的铜酸盐置换。所得叔丁酯的分子内Friedel-Crafts环化得到标题化合物。
• Nickel/Bis(oxazoline)-Catalyzed Asymmetric Negishi Arylations of Racemic Secondary Benzylic Electrophiles to Generate Enantioenriched 1,1-Diarylalkanes
  作者：Hien-Quang Do、E. R. R. Chandrashekar、Gregory C. Fu

  DOI：10.1021/ja408561b

  日期：2013.11.6

  A tertiary stereogenic center that bears two different aryl substituents is found in a variety of bioactive compounds, including medicines such as Zoloft and Detrol. We have developed an efficient method for the synthesis of enantioenriched 1,1-diarylalkanes from readily available racemic benzylic alcohols. Formation of a benzylic mesylate (which is not isolated), followed by treatment with an arylzinc reagent, LiI, and a chiral nickel/bis(oxazoline) catalyst, furnishes the Negishi cross-coupling product in high ee and good yield. A wide array of functional groups (e.g., an aryl iodide, a thiophene, and an N-Boc-indole) are compatible with the mild reaction conditions. This method has been applied to a gram-scale synthesis of a precursor to Zoloft.