(S)-(-)-N,N-diethyl-4-methoxy-2-(2-amino-2-phenylethyl)benzamide | 208345-53-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: (S)-(-)-N,N-diethyl-4-methoxy-2-(2-amino-2-phenylethyl)benzamide
• 英文别名: 2-[(2S)-2-amino-2-phenylethyl]-N,N-diethyl-4-methoxybenzamide
• CAS: 208345-53-3
• 化学式: C₂₀H₂₆N₂O₂
• 分子量: 326.439
• InChiKey: DMEVWOHZDCTSRY-IBGZPJMESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 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：
  55.6
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (S)-(-)-N,N-diethyl-4-methoxy-2-(2-amino-2-phenylethyl)benzamide 在 叔丁基锂 作用下， 以 四氢呋喃 、 正戊烷 为溶剂， 反应 0.5h， 以96%的产率得到(-)-(S)-6-methoxy-3-phenyl-3,4-dihydroisoquinolin-1(2H)-one
  参考文献：
  名称：

  Asymmetric Synthesis of 4-Hydroxy-3-phenyltetrahydroisoquinoline Derivatives Using Enantiopure Sulfinimines (N-Sulfinyl Imines)

  摘要：

  Addition of lateral lithiated amides and phthalide anions to enantiopure sulfinimines (N-sulfinyl imines) represents a new approach for the asymmetric synthesis of 3-substituted isoquinolones and 3-substituted 4-hydroxy isoquinolones, respectively, important chiral building blocks for isoquinoline alkaloid synthesis. In one example 3-phenylisoquinolone (-)-15b was prepared in >95% ee by treatment of amide ion 10b with sulfinimine (S)-(+)-11 and subsequent deprotection of the N-sulfinyl auxiliary and cyclization. Oxaziridine-mediated hydroxylation of the anion of 16 afforded 4-hydroxy isoquinolone 19, which was transformed into 4-hydroxy-3-phenyltetrahydroisoquinoline (-)-22. In another approach 22 was prepared more directly by addition of phthalide ion 26 to (S)(+)-11, creating the two stereogenic centers simultaneously. The selectivity proved to be highly counterion dependent.

  DOI：

  10.1021/jo991119x
• 作为产物：
  描述：

  (S,E)-N-benzylidene-4-methylbenzenesulfinamide 在 三氟乙酸 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 0.25h， 生成 (S)-(-)-N,N-diethyl-4-methoxy-2-(2-amino-2-phenylethyl)benzamide
  参考文献：
  名称：

  Sulfinimine mediated asymmetric synthesis of 3-substituted-1(2H)-isoquinolones: (3R,4S)-(−)-4-hydroxy-3-phenyltetrahydroisoquinoline

  摘要：

  A general approach to enantiomerically pure 3-substituted-1 (2H)-isoquinolones is illustrated by the addition of lateral lithiated amide 7 to sulfinimine 5. Isoquinolone 8 is readily transformed into (3R,4S)-(-)-4-hydroxy-3-phenyltetrahydroisoquinoline 15 via hydroxylation and reduction. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(98)00506-1

文献信息

• Asymmetric Synthesis of 4-Hydroxy-3-phenyltetrahydroisoquinoline Derivatives Using Enantiopure Sulfinimines (<i>N</i>-Sulfinyl Imines)
  作者：Franklin A. Davis、Yemane W. Andemichael

  DOI：10.1021/jo991119x

  日期：1999.11.1

  Addition of lateral lithiated amides and phthalide anions to enantiopure sulfinimines (N-sulfinyl imines) represents a new approach for the asymmetric synthesis of 3-substituted isoquinolones and 3-substituted 4-hydroxy isoquinolones, respectively, important chiral building blocks for isoquinoline alkaloid synthesis. In one example 3-phenylisoquinolone (-)-15b was prepared in >95% ee by treatment of amide ion 10b with sulfinimine (S)-(+)-11 and subsequent deprotection of the N-sulfinyl auxiliary and cyclization. Oxaziridine-mediated hydroxylation of the anion of 16 afforded 4-hydroxy isoquinolone 19, which was transformed into 4-hydroxy-3-phenyltetrahydroisoquinoline (-)-22. In another approach 22 was prepared more directly by addition of phthalide ion 26 to (S)(+)-11, creating the two stereogenic centers simultaneously. The selectivity proved to be highly counterion dependent.
• Sulfinimine mediated asymmetric synthesis of 3-substituted-1(2H)-isoquinolones: (3R,4S)-(−)-4-hydroxy-3-phenyltetrahydroisoquinoline
  作者：Franklin A. Davis、Yemane W. Andemichael

  DOI：10.1016/s0040-4039(98)00506-1

  日期：1998.5

  A general approach to enantiomerically pure 3-substituted-1 (2H)-isoquinolones is illustrated by the addition of lateral lithiated amide 7 to sulfinimine 5. Isoquinolone 8 is readily transformed into (3R,4S)-(-)-4-hydroxy-3-phenyltetrahydroisoquinoline 15 via hydroxylation and reduction. (C) 1998 Elsevier Science Ltd. All rights reserved.