(R)-4-butylhydrocoumarin | 61198-51-4

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 3,4-二氢香豆素
• 英文名称: (R)-4-butylhydrocoumarin
• 英文别名: 2H-1-Benzopyran-2-one, 4-butyl-3,4-dihydro-, (R)-；(4R)-4-butyl-3,4-dihydrochromen-2-one
• CAS: 61198-51-4
• 化学式: C₁₃H₁₆O₂
• 分子量: 204.269
• InChiKey: AGPPDVJEVKETSL-SNVBAGLBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (R)-(-)-3-(o-Anisyl)heptansaeure 在 三溴化硼 作用下， 以 二氯甲烷 为溶剂， 反应 2.5h， 生成 (R)-4-butylhydrocoumarin
  参考文献：
  名称：

  Synthetic Applications of the β-Lithiation of β-Aryl Secondary Amides:  Diastereoselective and Enantioselective Substitutions

  摘要：

  The sequence of beta-lithiation and electrophilic substitution of beta-aryl secondary amides is reported. The lithiations occur regioselectively at the beta-position, and the resulting lithiated intermediates can be reacted with a wide range of electrophiles to give substituted products. Reactions of beta-lithiated amides bearing an alpha-substituent provide substituted products with high diastereoselectivity, Electrophilic substitutions of beta-lithiated N-methylamides in the presence of the chiral diamine (-)-sparteine provide highly enantioenriched products. The methodology is used to synthesize enantioenriched beta-aryl beta-substituted amides, acids, and lactones.

  DOI：

  10.1021/jo952223r

文献信息

• MEYERS A. I.; SMITH R. K.; WHITTEN C. E., J. ORG. CHEM., 1979, 44, NO 13, 2250-2256
  作者：MEYERS A. I.、 SMITH R. K.、 WHITTEN C. E.

  DOI：——

  日期：——
• MEYERS A. I.; WHITTEN C. E., TETRAHEDRON LETT. <TELE-AY>, 1976, NO 23, 1947-1950
  作者：MEYERS A. I.、 WHITTEN C. E.

  DOI：——

  日期：——
• Synthetic Applications of the β-Lithiation of β-Aryl Secondary Amides:  Diastereoselective and Enantioselective Substitutions
  作者：Gary P. Lutz、Hua Du、Donald J. Gallagher、Peter Beak

  DOI：10.1021/jo952223r

  日期：1996.1.1

  The sequence of beta-lithiation and electrophilic substitution of beta-aryl secondary amides is reported. The lithiations occur regioselectively at the beta-position, and the resulting lithiated intermediates can be reacted with a wide range of electrophiles to give substituted products. Reactions of beta-lithiated amides bearing an alpha-substituent provide substituted products with high diastereoselectivity, Electrophilic substitutions of beta-lithiated N-methylamides in the presence of the chiral diamine (-)-sparteine provide highly enantioenriched products. The methodology is used to synthesize enantioenriched beta-aryl beta-substituted amides, acids, and lactones.