(1R,3R,4S)-3-(methoxymethoxy)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptane-1-carbaldehyde | 162790-67-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (1R,3R,4S)-3-(methoxymethoxy)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptane-1-carbaldehyde
• CAS: 162790-67-2
• 化学式: C₁₂H₁₈O₄
• 分子量: 226.273
• InChiKey: AWEOKOBEWMJJKI-KBVBSXBZSA-N

物化性质

• 沸点：
  302.6±32.0 °C(predicted)
• 密度：
  1.14±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (1R,3R,4S)-3-(methoxymethoxy)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptane-1-carbaldehyde 在 正丁基锂 、 18-冠醚-6 、 双(三甲基硅烷基)氨基钾 、 碳酸氢钠 、 间氯过氧苯甲酸 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 6.97h， 生成 (5E,7E)-(1S,2R,4S)-5-{(S)-4-[(R)-1-(4-Methoxy-benzyloxy)-allyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-2-methoxymethoxy-4,11,11-trimethyl-bicyclo[6.2.1]undeca-5,7-dien-3-one
  参考文献：
  名称：

  Application of an S → O Allylic Transposition in the Context of a Bridgehead Olefinic System. New Opportunities for the Structural Modification of Bicyclo[6.2.1]undecanes via Transannular Ring Closure

  摘要：

  A practical route is described for the preparation of allylic sulfide 8, whose double bond resides at a bridgehead site, Following hydride reduction of the ketone carbonyl and sulfoxidation, exposure to trifluoroacetic anhydride results in the operation of an intermolecular S --> O allylic transposition, This central step leads to 14a, an intermediate useful for probing the consequences associated with epoxidation of its cis-cyclononene double bond. A total of three different transannular cyclizations are described in order to demonstrate the ease with which ring closures can operate in a medium-ring setting of this type. Represented are transformations that generate tetrahydrofuran, oxetane, and cyclopropane subunits. The kinetic biases favoring these transformations are highlighted.

  DOI：

  10.1021/jo971591n
• 作为产物：
  描述：

  (1S,3R,4S)-1-ethenyl-3-(methoxymethoxy)-7,7-dimethylbicyclo[2.2.1]heptan-2-one 在 二甲基硫 、 臭氧 作用下， 生成 (1R,3R,4S)-3-(methoxymethoxy)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptane-1-carbaldehyde
  参考文献：
  名称：

  Stereocontrolled Oxygenation of Camphor Derivatives as a Prelude to the Complete .beta.-Ring Functionalization of Potential Precursors to Taxol and Structural Analogs Thereof

  摘要：

  The possibility of realizing the predominant exo a-hydroxylation of camphor-related ketones is described. Both the direct oxidation of enolate anions with 1-phenyl-N-(phenylsulfonyl)oxaziridine or exposure of the derived silyl enol ethers to dimethyl dioxirane are conducive to exo attack. Following conversion to MOM derivatives, the acidity of the alpha-carbonyl proton is reduced sufficiently to allow direct condensation of these hindered ketones with cyclohexenyllithium reagents. The subsequent anionic oxy-Cope rearrangement of the resulting exo carbinols results in direct conversion to tricyclic products that feature the characteristic C-2,C-9,C-10 B-ring oxygenation pattern resident in taxol. Further, the stereogenic centers are introduced in their proper absolute configuration. The steric demands of the [3,3] sigmatropic shift are discussed and the stereochemical features conducive to the minimization of steric compression subjected to experimental verification.

  DOI：

  10.1021/jo00109a020

文献信息

• Heteroatomic Modulation of Oxyanionic Cope Rearrangement Rates. Consequences on Competing Nucleophilic Cleavage of an Oxetane Ring in Precursors to Paclitaxel
  作者：Leo A. Paquette、Hui-Ling Wang、Qingbei Zeng、Tzenge-Lien Shih

  DOI：10.1021/jo981059f

  日期：1998.9.1
• 10.1002/1099-0690(200006)2000:12<2187::aid-ejoc2187<3.0.co;2-2
  作者：Paquette, Leo、Zeng, Qingbei、Wang, Hui-Ling、Shih, Tzenge-Lien

  DOI：10.1002/1099-0690(200006)2000:12<2187::aid-ejoc2187<3.0.co;2-2

  日期：——
• Application of an S → O Allylic Transposition in the Context of a Bridgehead Olefinic System. New Opportunities for the Structural Modification of Bicyclo[6.2.1]undecanes via Transannular Ring Closure
  作者：Jeffrey N. Johnston、Hon-Chung Tsui、Leo A. Paquette

  DOI：10.1021/jo971591n

  日期：1998.1.1

  A practical route is described for the preparation of allylic sulfide 8, whose double bond resides at a bridgehead site, Following hydride reduction of the ketone carbonyl and sulfoxidation, exposure to trifluoroacetic anhydride results in the operation of an intermolecular S --> O allylic transposition, This central step leads to 14a, an intermediate useful for probing the consequences associated with epoxidation of its cis-cyclononene double bond. A total of three different transannular cyclizations are described in order to demonstrate the ease with which ring closures can operate in a medium-ring setting of this type. Represented are transformations that generate tetrahydrofuran, oxetane, and cyclopropane subunits. The kinetic biases favoring these transformations are highlighted.
• Stereocontrolled Oxygenation of Camphor Derivatives as a Prelude to the Complete .beta.-Ring Functionalization of Potential Precursors to Taxol and Structural Analogs Thereof
  作者：Steven W. Elmore、Leo A. Paquette

  DOI：10.1021/jo00109a020

  日期：1995.2

  The possibility of realizing the predominant exo a-hydroxylation of camphor-related ketones is described. Both the direct oxidation of enolate anions with 1-phenyl-N-(phenylsulfonyl)oxaziridine or exposure of the derived silyl enol ethers to dimethyl dioxirane are conducive to exo attack. Following conversion to MOM derivatives, the acidity of the alpha-carbonyl proton is reduced sufficiently to allow direct condensation of these hindered ketones with cyclohexenyllithium reagents. The subsequent anionic oxy-Cope rearrangement of the resulting exo carbinols results in direct conversion to tricyclic products that feature the characteristic C-2,C-9,C-10 B-ring oxygenation pattern resident in taxol. Further, the stereogenic centers are introduced in their proper absolute configuration. The steric demands of the [3,3] sigmatropic shift are discussed and the stereochemical features conducive to the minimization of steric compression subjected to experimental verification.