4-triisopropylsilanyloxy-bicyclo[2.2.2]oct-5-en-2-one | 1245907-58-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-triisopropylsilanyloxy-bicyclo[2.2.2]oct-5-en-2-one
• CAS: 1245907-58-7
• 化学式: C₁₇H₃₀O₂Si
• 分子量: 294.51
• InChiKey: PPZJDRCAFBNWBU-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  4-triisopropylsilanyloxy-bicyclo[2.2.2]oct-5-en-2-one 在 dimethyl sulfide borane 、 水 、 四丙基高钌酸铵 、 N-甲基吗啉氧化物 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 12.0h， 以38%的产率得到4-triisopropylsilanyloxy-bicyclo[2.2.2]octane-2,6-dione
  参考文献：
  名称：

  Asymmetric baker’s yeast reductions of bridgehead-substituted bicyclo[2.2.2]octane-2,6-dione derivatives followed by conversion into catalytically active BODOLs for the diethylzinc addition to benzaldehyde

  摘要：

  4-Substituted bicyclo[2.2.2]octane-2,6-diones have been synthesized and tested as substrates in the enantioselective reduction with baker's yeast to give the corresponding hydroxy ketones. It was found that the derivative bearing a TIPSO group at the 4-position was not reduced at all while that with a TBDMSO group gave 87% yield and 46% ee. Other 4-oxy functionalized derivatives were reduced with varying yields (36-87%) and ees (10-82%). The best result was obtained for the 4-Oallyl derivative (80% yield, 82% ee). The hydroxy ketones carrying the benzyloxy and allyloxy groups at the 4-position were converted into the corresponding BODOLs, which were tested as catalysts in the diethylzinc addition to benzaldehyde. In this reaction the ees were 90% and 89%, respectively, which showed that BODOLs substituted at the 4-position are essentially as good catalysts in this reaction as those bearing a hydrogen. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2010.06.003
• 作为产物：
  描述：

  (+/-)-4-hydroxybicyclo[2.2.2]oct-5-en-2-one 、 三异丙基硅基三氟甲磺酸酯 在 2,6-二甲基吡啶 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以74%的产率得到4-triisopropylsilanyloxy-bicyclo[2.2.2]oct-5-en-2-one
  参考文献：
  名称：

  Asymmetric baker’s yeast reductions of bridgehead-substituted bicyclo[2.2.2]octane-2,6-dione derivatives followed by conversion into catalytically active BODOLs for the diethylzinc addition to benzaldehyde

  摘要：

  4-Substituted bicyclo[2.2.2]octane-2,6-diones have been synthesized and tested as substrates in the enantioselective reduction with baker's yeast to give the corresponding hydroxy ketones. It was found that the derivative bearing a TIPSO group at the 4-position was not reduced at all while that with a TBDMSO group gave 87% yield and 46% ee. Other 4-oxy functionalized derivatives were reduced with varying yields (36-87%) and ees (10-82%). The best result was obtained for the 4-Oallyl derivative (80% yield, 82% ee). The hydroxy ketones carrying the benzyloxy and allyloxy groups at the 4-position were converted into the corresponding BODOLs, which were tested as catalysts in the diethylzinc addition to benzaldehyde. In this reaction the ees were 90% and 89%, respectively, which showed that BODOLs substituted at the 4-position are essentially as good catalysts in this reaction as those bearing a hydrogen. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2010.06.003