(E)-N-(cyclohexenylmethylene)diphenylmethanamine | 946123-47-3

• 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: (E)-N-(cyclohexenylmethylene)diphenylmethanamine
• CAS: 946123-47-3
• 化学式: C₂₀H₂₁N
• 分子量: 275.393
• InChiKey: CODDYTWTROWUKP-LTGZKZEYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.35
• 重原子数：
  21.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  12.36
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  (E)-N-(cyclohexenylmethylene)diphenylmethanamine 、 反-1-甲氧基-3-(三甲基硅氧基)-1,3-丁二烯 在 (S)-VAPOL/B(OPh)3 盐酸 作用下， 以 二氯甲烷 、 甲苯 、 四氢呋喃 为溶剂， 反应 48.0h， 生成 (S)-1-benzhydryl-2-cyclohexenyl-2,3-dihydropyridin-4(1H)-one
  参考文献：
  名称：

  Regulation of Orthogonal Functions in a Dual Catalyst System. Subservient Role of a Nonchiral Lewis Acid in an Asymmetric Catalytic Heteroatom Diels−Alder Reaction

  摘要：

  A catalytic asymmetric heteroatom Diels-Alder reaction of unactivated imines with Danishefsky's diene is described which gives high asymmetric induction for N-benzhydryl imines derived from a variety of aldehydes. The catalyst is derived from B(OPh)(3) and the VAPOL ligand and gives good induction, but the reaction stalls and does not give high conversion (similar to 50%). It was found that in the presence of both the chiral catalyst and excess amounts of B(OPh)(3) the reaction proceeds to completion and gives high yields of the dihydropiperidinone product. Despite the presence of large quantities of the nonchiral Lewis acid B(OPh)(3), the asymmetric induction of the product remains constant (90% ee) as the amount of B(OPh)(3) is steadily increased and does not drop off until the ratio of B(OPh)(3) to VAPOL is 100:1 (82% ee). These observations are interpreted as involving highly separated and different activities for the chiral and nonchiral Lewis acids present in the reaction. Specifically, the excess B(OPh)(3) serves to bind to the product and release the chiral catalyst to turnover more starting material. The B(OPh)(3) does not compete in turning over the starting material, and a series of binding studies reveal that this is likely due to a combination of two factors. The binding studies reveal that the chiral catalyst binds to the starting imine 7 times more strongly than does B(OPh)(3). However, in order to explain the constant asymmetric induction observed despite the addition of increasing amounts of B(OPh)(3), the rate of the reaction of the imine complexed with the chiral catalyst must be at least 10 times faster than the reaction of the imine complexed with B(OPh)(3). Finally, a catalyst generated from BINOL and B(OPh)(3) does not show this phenomenon.

  DOI：

  10.1021/ja069019d
• 作为产物：
  描述：

  1-cyclohexene-1-carboxaldehyde 、 二苯甲胺 在 magnesium sulfate 作用下， 以 二氯甲烷 为溶剂， 生成 (E)-N-(cyclohexenylmethylene)diphenylmethanamine
  参考文献：
  名称：

  Regulation of Orthogonal Functions in a Dual Catalyst System. Subservient Role of a Nonchiral Lewis Acid in an Asymmetric Catalytic Heteroatom Diels−Alder Reaction

  摘要：

  A catalytic asymmetric heteroatom Diels-Alder reaction of unactivated imines with Danishefsky's diene is described which gives high asymmetric induction for N-benzhydryl imines derived from a variety of aldehydes. The catalyst is derived from B(OPh)(3) and the VAPOL ligand and gives good induction, but the reaction stalls and does not give high conversion (similar to 50%). It was found that in the presence of both the chiral catalyst and excess amounts of B(OPh)(3) the reaction proceeds to completion and gives high yields of the dihydropiperidinone product. Despite the presence of large quantities of the nonchiral Lewis acid B(OPh)(3), the asymmetric induction of the product remains constant (90% ee) as the amount of B(OPh)(3) is steadily increased and does not drop off until the ratio of B(OPh)(3) to VAPOL is 100:1 (82% ee). These observations are interpreted as involving highly separated and different activities for the chiral and nonchiral Lewis acids present in the reaction. Specifically, the excess B(OPh)(3) serves to bind to the product and release the chiral catalyst to turnover more starting material. The B(OPh)(3) does not compete in turning over the starting material, and a series of binding studies reveal that this is likely due to a combination of two factors. The binding studies reveal that the chiral catalyst binds to the starting imine 7 times more strongly than does B(OPh)(3). However, in order to explain the constant asymmetric induction observed despite the addition of increasing amounts of B(OPh)(3), the rate of the reaction of the imine complexed with the chiral catalyst must be at least 10 times faster than the reaction of the imine complexed with B(OPh)(3). Finally, a catalyst generated from BINOL and B(OPh)(3) does not show this phenomenon.

  DOI：

  10.1021/ja069019d

文献信息

• COMPOUNDS AND RELATED METHODS OF USE
  申请人：Jacobsen Eric N.

  公开号：US20130066109A1

  公开（公告）日：2013-03-14

  Described herein are compounds of formula (I), related compositions, and their use, for example in the formation of α-amino acids or a precursor thereof such as an α-aminonitrile.

  本文描述了式（I）的化合物、相关组合物及其用途，例如在形成α-氨基酸或其前体（如α-氨基腈）中的应用。
• US8859812B2
  申请人：——

  公开号：US8859812B2

  公开（公告）日：2014-10-14
• [EN] COMPOUNDS AND RELATED METHODS OF USE<br/>[FR] COMPOSÉS ET PROCÉDÉS D'UTILISATION S'Y RAPPORTANT
  申请人：HARVARD COLLEGE

  公开号：WO2011031764A2

  公开（公告）日：2011-03-17

  Described herein are compounds of formula (I), related compositions, and their use, for example in the formation of α-amino acids or a precursor thereof such as an α-aminonitrile.