| 1427263-14-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• CAS: 1427263-14-6
• 化学式: C₂₁H₁₉NO₃
• 分子量: 333.387
• InChiKey: BFIGONJAWLMCBH-IBGZPJMESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  25
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  46.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  Tert-butyl-(3-iodo-1-phenylpropoxy)-dimethylsilane 在 正丁基锂 、 四丙基高钌酸铵 、 四丁基氟化铵 、 N-甲基吗啉氧化物 作用下， 以 四氢呋喃 、 六甲基磷酰三胺 、 二氯甲烷 为溶剂， 反应 5.0h， 生成
  参考文献：
  名称：

  Intramolecular Oxyallyl–Carbonyl (3 + 2) Cycloadditions

  摘要：

  Cycloadditions involving oxyallyl intermediates typically require an electron-rich diene or alkene, but we have discovered the first examples of the cycloaddition of heteroatom-stabilized oxyallyls onto carbonyl groups. An oxazolidinone-substituted oxyallyl undergoes chemoselective (3 + 2) cycloaddition onto the carbonyl group of a tethered dienone in preference to formation of the expected (4 + 3) cycloadduct. Density functional theory calculations indicated that the (3 + 2) cycloaddition takes place through a concerted, highly asynchronous mechanism. The transition state features simultaneous interactions of the oxyallyl LUMO with the carbonyl pi and lone-pair orbitals, making this reaction "hemipseudopericyclic" (halfway between purely pericyclic and purely pseudopericyclic). Further (3 + 2) cycloadditions involving tethered phenyl ketones and a tethered enone were predicted theoretically and verified experimentally.

  DOI：

  10.1021/ja312459b

文献信息

• Intramolecular Oxyallyl–Carbonyl (3 + 2) Cycloadditions
  作者：Elizabeth H. Krenske、Shuzhong He、Jian Huang、Yunfei Du、K. N. Houk、Richard P. Hsung

  DOI：10.1021/ja312459b

  日期：2013.4.10

  Cycloadditions involving oxyallyl intermediates typically require an electron-rich diene or alkene, but we have discovered the first examples of the cycloaddition of heteroatom-stabilized oxyallyls onto carbonyl groups. An oxazolidinone-substituted oxyallyl undergoes chemoselective (3 + 2) cycloaddition onto the carbonyl group of a tethered dienone in preference to formation of the expected (4 + 3) cycloadduct. Density functional theory calculations indicated that the (3 + 2) cycloaddition takes place through a concerted, highly asynchronous mechanism. The transition state features simultaneous interactions of the oxyallyl LUMO with the carbonyl pi and lone-pair orbitals, making this reaction "hemipseudopericyclic" (halfway between purely pericyclic and purely pseudopericyclic). Further (3 + 2) cycloadditions involving tethered phenyl ketones and a tethered enone were predicted theoretically and verified experimentally.