tert-butyl (1S,5R)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate | 208038-03-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: tert-butyl (1S,5R)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate
• CAS: 208038-03-3
• 化学式: C₁₂H₁₉NO₂
• 分子量: 209.288
• InChiKey: ZJQQGLKPJWUKNL-ZJUUUORDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  tert-butyl (1S,5R)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate 在 4-二甲氨基吡啶 、 sodium hydroxide 、 双氧水 、 sodium carbonate 、 三氟乙酸 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 、 水 为溶剂， 反应 56.17h， 生成 [(1S,2S,3R,5R)-2-carbamoyl-8-azabicyclo[3.2.1]octan-3-yl] benzoate
  参考文献：
  名称：

  Enantiospecific Synthesis of Natural (−)-Cocaine and Unnatural (+)-Cocaine from d- and l-Glutamic Acid

  摘要：

  Natural (-)-cocaine and unnatural (+)-cocaine have been synthesized enantiospecifically from D- and L-glutamic acid, respectively. The axial-equatorial substitutents were introduced by a stereo- and regiospecific dipolar cycloaddition to the corresponding (LR,5S)- and (1S,5R)-N-BOC-nortropenes with (ethoxycarbonyl)formonitrile N-oxide. A sequence of subsequent stereochemically controlled transformations converted the fused isoxazoline to the requisite P-hydroxy ester. Synthesis of the key intermediate N-BOC-nortropenes involved construction of the 8-azabicyclo[3.2.1]octane framework by Dieckmann condensation of cis-5-substituted D-and L-proline esters. For comparison, (1R,SS)-N-BOC-nortropene also was derived by degradation from natural cocaine. The cis-5-substituted D-and L-proline esters were obtained by sulfide contraction and subsequent catalytic hydrogenation to induce stereospecifically the C-5 stereochemistry from D-and L-thiopyroglutamate, which in turn were prepared from D-and L-glutamic acids, respectively.

  DOI：

  10.1021/jo980153t
• 作为产物：
  描述：

  (S)-dibenzyl 2-(1-benzyl-5-(tert-butoxycarbonyl)pyrrolidin-2-ylidene)succinate 在 palladium on activated charcoal 氢气 、 ammonium formate 、 双(三甲基硅烷基)氨基钾 、 sodium hydride 、 potassium carbonate 、 乙酰氯 、 sodium iodide 作用下， 以 四氢呋喃 、 吡啶 、 甲醇 、 甲苯 、 乙腈 为溶剂， 反应 61.5h， 生成 tert-butyl (1S,5R)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate
  参考文献：
  名称：

  Enantiospecific Synthesis of Natural (−)-Cocaine and Unnatural (+)-Cocaine from d- and l-Glutamic Acid

  摘要：

  Natural (-)-cocaine and unnatural (+)-cocaine have been synthesized enantiospecifically from D- and L-glutamic acid, respectively. The axial-equatorial substitutents were introduced by a stereo- and regiospecific dipolar cycloaddition to the corresponding (LR,5S)- and (1S,5R)-N-BOC-nortropenes with (ethoxycarbonyl)formonitrile N-oxide. A sequence of subsequent stereochemically controlled transformations converted the fused isoxazoline to the requisite P-hydroxy ester. Synthesis of the key intermediate N-BOC-nortropenes involved construction of the 8-azabicyclo[3.2.1]octane framework by Dieckmann condensation of cis-5-substituted D-and L-proline esters. For comparison, (1R,SS)-N-BOC-nortropene also was derived by degradation from natural cocaine. The cis-5-substituted D-and L-proline esters were obtained by sulfide contraction and subsequent catalytic hydrogenation to induce stereospecifically the C-5 stereochemistry from D-and L-thiopyroglutamate, which in turn were prepared from D-and L-glutamic acids, respectively.

  DOI：

  10.1021/jo980153t

文献信息

• Merging Halogen-Atom Transfer (XAT) and Cobalt Catalysis to Override E2-Selectivity in the Elimination of Alkyl Halides: A Mild Route toward <i>contra</i>-Thermodynamic Olefins
  作者：Huaibo Zhao、Alastair J. McMillan、Timothée Constantin、Rory C. Mykura、Fabio Juliá、Daniele Leonori

  DOI：10.1021/jacs.1c06768

  日期：2021.9.15

  mechanistically distinct tactic to carry E2-type eliminations on alkyl halides. This strategy exploits the interplay of α-aminoalkyl radical-mediated halogen-atom transfer (XAT) with desaturative cobalt catalysis. The methodology is high-yielding, tolerates many functionalities, and was used to access industrially relevant materials. In contrast to thermal E2 eliminations where unsymmetrical substrates give regioisomeric

  我们在这里报告了一种在烷基卤化物上进行 E2 型消除的机械上不同的策略。该策略利用了 α-氨基烷基自由基介导的卤素原子转移 (XAT) 与去饱和钴催化的相互作用。该方法产量高，具有多种功能，并用于获取工业相关材料。与不对称底物产生区域异构混合物的热 E2 消除相比，这种方法能够通过微调钴催化剂的电子和空间性质，获得高烯烃位置选择性。这一史无前例的机械特性允许访问禁忌-thermodynamic烯烃，由E2淘汰难以捉摸。
• A Concise Asymmetric Route to the Bridged Bicyclic Tropane Alkaloid Ferruginine Using Enyne Ring-Closing Metathesis
  作者：Varinder K. Aggarwal、Christopher J. Astle、Mark Rogers-Evans

  DOI：10.1021/ol049665m

  日期：2004.4.1

  [reaction: see text] Enyne metathesis has been used to prepare bridged azabicycles and applied in a short asymmetric synthesis of the tropane ferruginine. A Grubbs first generation catalyst proved to be superior to the second generation catalyst in the enyne metathesis reaction.

  [反应：见文本] Enyne复分解已被用于制备桥连的氮杂双环，并用于短暂的不对称合成的托帕烷铁精氨酸。事实证明，Grubbs第一代催化剂在烯炔复分解反应中优于第二代催化剂。