(1-benzyloxymethyl-cyclohexa-2,5-dienyl)-acetonitrile | 912581-10-3

• 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: (1-benzyloxymethyl-cyclohexa-2,5-dienyl)-acetonitrile
• 英文别名: 2-[1-(Phenylmethoxymethyl)cyclohexa-2,5-dien-1-yl]acetonitrile；2-[1-(phenylmethoxymethyl)cyclohexa-2,5-dien-1-yl]acetonitrile
• CAS: 912581-10-3
• 化学式: C₁₆H₁₇NO
• 分子量: 239.317
• InChiKey: FIKUULCXFNKCBS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  33
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (1-benzyloxymethyl-cyclohexa-2,5-dienyl)-acetonitrile 在 二异丁基氢化铝 、 sodium sulfate 作用下， 以 正己烷 、 二氯甲烷 、 甲苯 为溶剂， 反应 4.0h， 生成 [2-(1-Benzyloxymethyl-cyclohexa-2,5-dienyl)-eth-(Z)-ylidene]-((R)-2-methoxy-1-phenyl-ethyl)-amine
  参考文献：
  名称：

  Desymmetrization of Cyclohexa-2,5-dienes through a Diastereoselective Protonation−Hydroamination Cascade

  摘要：

  Intramolecular hydroamination of cyclohexa-2,5-dienes led with high selectivity to the corresponding bicyclic allylic amines. This study demonstrates that the reaction does not proceed through a direct hydroamination of one of the diastereotopic olefins but more likely involves a diastereoselective protonation of a pentadienyl anion, followed by addition of a lithium amide across the double bond of the resulting 1,3-diene, and is concluded by a highly regioselective protonation of the final allylic anion.

  DOI：

  10.1021/ol0618353
• 作为产物：
  描述：

  1-(氰基甲基)环己-2,5-二烯-1-羧酸 在 sodium tetrahydroborate 、 氯甲酸乙酯 、 四丁基碘化铵 、 sodium hydride 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 7.0h， 生成 (1-benzyloxymethyl-cyclohexa-2,5-dienyl)-acetonitrile
  参考文献：
  名称：

  Desymmetrization of Cyclohexa-2,5-dienes through a Diastereoselective Protonation−Hydroamination Cascade

  摘要：

  Intramolecular hydroamination of cyclohexa-2,5-dienes led with high selectivity to the corresponding bicyclic allylic amines. This study demonstrates that the reaction does not proceed through a direct hydroamination of one of the diastereotopic olefins but more likely involves a diastereoselective protonation of a pentadienyl anion, followed by addition of a lithium amide across the double bond of the resulting 1,3-diene, and is concluded by a highly regioselective protonation of the final allylic anion.

  DOI：

  10.1021/ol0618353

文献信息

• Base-Catalyzed Intramolecular Hydroamination of Cyclohexa-2,5-dienes: Insights into the Mechanism through DFT Calculations and Application to the Total Synthesis of<i>epi</i>-Elwesine
  作者：Géraldine Rousseau、Raphaël Lebeuf、Kurt Schenk、Frédéric Castet、Frédéric Robert、Yannick Landais

  DOI：10.1002/chem.201403662

  日期：2014.11.3

  The base‐catalyzed intramolecular hydroamination of 1‐ethylaminocyclohexa‐2,5‐dienes is described. The transformation proceeds through isomerization of the cyclohexa‐1,4‐dienyl fragment into the corresponding conjugated 1,3‐diene prior to the hydroamination step. Attaching a chiral glycinol ether auxiliary on the amino group allows the protonation to occur with complete diastereocontrol. The resulting

  描述了碱催化的1-乙基氨基环己2,5-二烯的分子内胺化反应。在加氢胺化步骤之前，通过将环己-1,4-二烯基片段异构化为相应的共轭1,3-二烯进行转化。在氨基上连接手性甘氨醇醚助剂可实现完全非对映异构控制的质子化。然后将所得的氨基酰胺锂加到1,3-二烯基部分上，提供所需的稠合吡咯烷环以及相应的烯丙基锂阴离子。后者的质子化随后以高度的区域控制进行，从而有利于所得的烯丙基胺。相反，当反应在伯胺上进行时，获得了带有均烯丙基氨基的稠合吡咯烷。该过程的立体化学过程和反应途径的确定是基于在DFT级进行的计算而建立的。最后，将该方法应用于（+）对映选择性合成epi- elwesine，一种克林尼生物碱。
• Palladium-Catalyzed Enantioselective Desymmetrizing Aza-Wacker Reaction: Development and Application to the Total Synthesis of (−)-Mesembrane and (+)-Crinane
  作者：Xu Bao、Qian Wang、Jieping Zhu

  DOI：10.1002/anie.201712521

  日期：2018.2.12

  good yields with excellent enantioselectivities. A cooperative effect between the phosphoric acid and the pyrox ligand ensured efficient transformation. This reaction was tailor‐made for Amaryllidaceae and Sceletium alkaloids as illustrated by its application in the development of the concise and divergent total synthesis of (−)‐mesembrane and (+)‐crinane.

  报道了前所未有的催化对映选择性脱对称氮杂-瓦克反应。在催化量的新开发的Pd（CPA）2（MeCN）2催化剂（CPA =手性磷酸），吡咯配体和分子氧的存在下，适当官能化的手性3,3-二取代的环己-1的环化，4-二烯以良好的收率和优异的对映选择性提供了对映体富集的顺式-3a-取代的四氢吲哚。磷酸和吡咯配体之间的协同作用确保了有效的转化。该反应是针对金眼兰科和苦艾碱生物碱量身定制的，如其在开发简明和发散的（-）-膜和（+）-Crinane的全合成反应中的应用所说明的那样。
• Desymmetrization of Cyclohexa-2,5-dienes through a Diastereoselective Protonation−Hydroamination Cascade
  作者：Raphaël Lebeuf、Frédéric Robert、Kurt Schenk、Yannick Landais

  DOI：10.1021/ol0618353

  日期：2006.10.1

  Intramolecular hydroamination of cyclohexa-2,5-dienes led with high selectivity to the corresponding bicyclic allylic amines. This study demonstrates that the reaction does not proceed through a direct hydroamination of one of the diastereotopic olefins but more likely involves a diastereoselective protonation of a pentadienyl anion, followed by addition of a lithium amide across the double bond of the resulting 1,3-diene, and is concluded by a highly regioselective protonation of the final allylic anion.