N,N,5,5-tetramethyl-4-nitromethyl-1-hexaneamine | 865447-11-6

• 分子结构分类: 有机化合物 - 有机1,3-偶极化合物 - 烯丙基型1,3-偶极有机化合物
• 英文名称: N,N,5,5-tetramethyl-4-nitromethyl-1-hexaneamine
• 英文别名: N,N,5,5-tetramethyl-4-(nitromethyl)hexan-1-amine
• CAS: 865447-11-6
• 化学式: C₁₁H₂₄N₂O₂
• 分子量: 216.324
• InChiKey: QEHPGVVXKVBNJQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  15
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  49.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  N,N,5,5-tetramethyl-4-nitromethyl-1-hexaneamine 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 6.0h， 生成 N-5-(dimethylamino)-2-tert-butyl-pentyl N'-phenyl thiourea
  参考文献：
  名称：

  Transition State Modeling and Catalyst Design for Hydrogen Bond-Stabilized Enolate Formation

  摘要：

  [GRAPHICS]A catalyst for enolate formation was designed that incorporates an amine base along with a thiourea to bind to the oxygen atom of the substrate and enolate through hydrogen bonding. A computational model of the transition state was developed in which the thiourea (modeled initially as a urea) and amine were separate molecules. This model and models incorporating one or two methanol molecules in place of the urea showed an out-of-plane hydrogen bond, apparently to the carbonyl pi-bond, in addition to an in-plane hydrogen bond to an unshared electron pair. In contrast, optimized complexes of the ketone and the fully formed enolate showed only in-plane hydrogen bonding. The transition state model with the urea and amine was used to define a database search with the computer program CAVEAT to identify structures suitable for linking the amine and urea/thiourea moieties in the transition state. On the basis of a group of structures identified from this search, a flexible but conformationally biased linker was designed to connect the two catalytic moieties. The molecule having the amine and thiourea moieties connected by this linker was synthesized and was shown to catalyze proton exchange between methanol and deuterated acetone. The catalyst was about 5-fold more efficient than the amine and thiourea as separate molecules and relative to a similar but less conformationally biased catalyst.

  DOI：

  10.1021/jo0513818
• 作为产物：
  描述：

  (E)-3,3-dimethyl-1-nitrobut-1-ene 、 N,N-二甲基-3-氯丙胺 在 碘 、 magnesium 、 1,2-二溴乙烷 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 N,N,5,5-tetramethyl-4-nitromethyl-1-hexaneamine
  参考文献：
  名称：

  Transition State Modeling and Catalyst Design for Hydrogen Bond-Stabilized Enolate Formation

  摘要：

  [GRAPHICS]A catalyst for enolate formation was designed that incorporates an amine base along with a thiourea to bind to the oxygen atom of the substrate and enolate through hydrogen bonding. A computational model of the transition state was developed in which the thiourea (modeled initially as a urea) and amine were separate molecules. This model and models incorporating one or two methanol molecules in place of the urea showed an out-of-plane hydrogen bond, apparently to the carbonyl pi-bond, in addition to an in-plane hydrogen bond to an unshared electron pair. In contrast, optimized complexes of the ketone and the fully formed enolate showed only in-plane hydrogen bonding. The transition state model with the urea and amine was used to define a database search with the computer program CAVEAT to identify structures suitable for linking the amine and urea/thiourea moieties in the transition state. On the basis of a group of structures identified from this search, a flexible but conformationally biased linker was designed to connect the two catalytic moieties. The molecule having the amine and thiourea moieties connected by this linker was synthesized and was shown to catalyze proton exchange between methanol and deuterated acetone. The catalyst was about 5-fold more efficient than the amine and thiourea as separate molecules and relative to a similar but less conformationally biased catalyst.

  DOI：

  10.1021/jo0513818