8-benzyl-8-azabicyclo(3.2.1)oct-6-ene | 113340-17-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: 8-benzyl-8-azabicyclo(3.2.1)oct-6-ene
• 英文别名: 8-Benzyl-8-azabicyclo[3.2.1]oct-6-ene
• CAS: 113340-17-3
• 化学式: C₁₄H₁₇N
• 分子量: 199.296
• InChiKey: HFONADLMOZRUER-UHFFFAOYSA-N

物化性质

• 沸点：
  291.2±9.0 °C(Predicted)
• 密度：
  1.073±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  3.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  8-benzyl-8-azabicyclo(3.2.1)oct-6-ene 在 盐酸 、 氨 、 sodium 作用下， 以 丙酮 为溶剂， 反应 5.0h， 生成 8-Methyl-8-aza-bicyclo[3.2.1]oct-6-ene; hydrochloride
  参考文献：
  名称：

  Manipulation of substituents at nitrogen in tropanes, homotropanes, and dehydro- derivatives

  摘要：

  Trop-6-ene (8-methyl-8-azabicyclo[3.2.1]oct-6-ene) and substituted N-benzylnortrop-6-enes are synthesised. N-Debenzylation of tropanes fails using a wide variety of non-hydrogenolytic conditions despite effective application in model piperidine derivatives; debenzylation of homotropanes is more successful, giving norhomotropane and norhomotrop-7-ene. Bridged N-benzyl compounds react more slowly than N-methyl analogues with chloroformates; the resulting quaternary intermediates are more prone than the N-methyl analogues to suffer competitive reversion to the starting amine, especially in the tropanes, consistent with slower S(N)2 attack at the benzylic carbon during decomposition; the use of an N-p-methoxybenzyl group does allow partial debenzylation to nortrop-6-ene, suggesting greater SNI character in the decomposition step in this case. 'Equatorial' attack is preferred in methylation of N-benzyl-nortrop-6-ene and -homotrop-7-ene with CH3I; subsequent reductive debenzylation of the quaternary salt achieves overall replacement of N-benzyl by N-methyl in both cases. VT NMR studies show the presence of a single 'equatorial' invertomer (Cl syn- to the 2C-bridge) in N-chloro-norhomotropanes and -7-enes and, by analogy, in the N-alkyl compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(98)00643-7
• 作为产物：
  描述：

  1,3-环庚二烯 在 aluminum amalgam 、 lithium aluminium tetrahydride 、 氯化亚砜 、 tetramethylammonium metaperiodate 、 potassium carbonate 、 lithium chloride 作用下， 以 四氢呋喃 、 乙醚 、 氯仿 、 水 、 N,N-二甲基甲酰胺 为溶剂， 生成 8-benzyl-8-azabicyclo(3.2.1)oct-6-ene
  参考文献：
  名称：

  降冰片烷和降冰片烯6烯衍生物的简单方法

  摘要：

  分子内环化的-1-（苄基氨基）-4- chlorocycloheptane和庚-2-烯分别得到相应的8-氮杂双环[3.2.1]辛烷（去甲莨菪烷）和-辛-6-烯（nortrop -6-烯）衍生物。在适当的条件下，环庚-1,3-二烯以75％的总收率转化为降冰片烷。

  DOI：

  10.1016/s0040-4039(01)81095-9

文献信息

• Synthetic approaches to nortropanes and nortrop-6-enes; intramolecular displacement by nitrogen in 7-membered rings
  作者：Antoinette Naylor (nee Bathgate)、Nicola Howarth、John R. Malpass

  DOI：10.1016/s0040-4020(01)80313-6

  日期：1993.1

  The synthesis of simple nortropane and nortrop-6-ene derivatives from cyclohepta-1,3-diene is described. The key intermediates are trans-1-amino-4-chloro-cycloheptanes and -cyclohept-2-enes which are derived efficiently from the corresponding cis-amino-alcohols and undergo intramolecular cyclisation. Corresponding derivatisation of cyclohexa- and cycloocta-1,3-dienes is explored and attempts to achieve Pd-catalysed cyclisation of 1-amino-4-acetoxy-derivatives is described. Nitrogen inversion data for selected nortropane derivatives are included.
• A simple approach to nortropane and nortrop-6-ene derivatives
  作者：Antoinette Bathgate、John R. Malpass

  DOI：10.1016/s0040-4039(01)81095-9

  日期：1987.1

  Intramolecular cyclisation of -1-(benzylamino)-4-chlorocycloheptane and hept-2-ene gives the corresponding 8-azabicyclo[3.2.1]octane (nortropane) and -oct-6-ene (nortrop-6-ene) derivatives respectively. Under appropriate conditions, cyclohepta-1,3-diene is converted into nortropane in 75% overall yield.

  分子内环化的-1-（苄基氨基）-4- chlorocycloheptane和庚-2-烯分别得到相应的8-氮杂双环[3.2.1]辛烷（去甲莨菪烷）和-辛-6-烯（nortrop -6-烯）衍生物。在适当的条件下，环庚-1,3-二烯以75％的总收率转化为降冰片烷。
• Manipulation of substituents at nitrogen in tropanes, homotropanes, and dehydro- derivatives
  作者：Nicola M. Howarth、John R. Malpass、Craig R. Smith

  DOI：10.1016/s0040-4020(98)00643-7

  日期：1998.9

  Trop-6-ene (8-methyl-8-azabicyclo[3.2.1]oct-6-ene) and substituted N-benzylnortrop-6-enes are synthesised. N-Debenzylation of tropanes fails using a wide variety of non-hydrogenolytic conditions despite effective application in model piperidine derivatives; debenzylation of homotropanes is more successful, giving norhomotropane and norhomotrop-7-ene. Bridged N-benzyl compounds react more slowly than N-methyl analogues with chloroformates; the resulting quaternary intermediates are more prone than the N-methyl analogues to suffer competitive reversion to the starting amine, especially in the tropanes, consistent with slower S(N)2 attack at the benzylic carbon during decomposition; the use of an N-p-methoxybenzyl group does allow partial debenzylation to nortrop-6-ene, suggesting greater SNI character in the decomposition step in this case. 'Equatorial' attack is preferred in methylation of N-benzyl-nortrop-6-ene and -homotrop-7-ene with CH3I; subsequent reductive debenzylation of the quaternary salt achieves overall replacement of N-benzyl by N-methyl in both cases. VT NMR studies show the presence of a single 'equatorial' invertomer (Cl syn- to the 2C-bridge) in N-chloro-norhomotropanes and -7-enes and, by analogy, in the N-alkyl compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.