2-(5-trimethylsilyl-4-pentynyl)-1-cyclopentanone | 130741-31-0

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 2-(5-trimethylsilyl-4-pentynyl)-1-cyclopentanone
• 英文别名: 2-(5-trimethylsilylpent-4-ynyl)cyclopentan-1-one
• CAS: 130741-31-0
• 化学式: C₁₃H₂₂OSi
• 分子量: 222.403
• InChiKey: VDGDFGXVYNPJMK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.41
• 重原子数：
  15.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  2-(5-trimethylsilyl-4-pentynyl)-1-cyclopentanone 在 碘代三甲硅烷 、 间氯过氧苯甲酸 、 六甲基二硅氮烷 、 sodium iodide 作用下， 生成 2-iodo-2-(5-trimethylsilyl-4-pentynyl)-1-cyclopentanone
  参考文献：
  名称：

  甲硅烷基乙炔或烯烃α-碘酮的分子内自由基环化：在（±）-二苯甲基的全合成中的应用

  摘要：

  用氢化三丁基锡和AIBN处理甲硅烷基或烯属α-碘酮，通过分子内α-羰基自由基环化反应得到双环酮。作为该自由基环化反应的一种应用，已经有效地完成了（±）-二苯乙烯的全合成。

  DOI：

  10.1016/s0040-4039(00)97460-4
• 作为产物：
  描述：

  2-Oxo-1-(5-trimethylsilanyl-pent-4-ynyl)-cyclopentanecarboxylic acid ethyl ester 在 lithium iodide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 5.0h， 生成 2-(5-trimethylsilyl-4-pentynyl)-1-cyclopentanone
  参考文献：
  名称：

  Total Synthesis of Dimethyl Glolosiphone Aviaα-Carbonyl Radical Spiro-Cyclization

  摘要：

  AbstractA general approach toward spiro[4.4]nonane structure based on the α‐carbonyl radical cyclization has been developed. Efficient total synthesis of dimethyl gloiosiphone A (2) was achieved. Thus, alkylation of the anion of dimethylhydrazone of cyclopentanone with 5‐iodopent‐1‐yne followed by hydrolysis gave ketone 4. Iodination of 4 via its TMS‐enol ether yielded iodo ketone 7. Radical spiro‐cyclization of 7 gave spiro ketone 10. Iodination of 10 afford iodo spiro ketone 23. Oxidation and iodination of 23 gave compound 24. Methylation of 24 furnished methoxy iodo enone 25. Substitution of iodide in 25 with methoxide produced dimethoxy enone 26. Allylic oxidation of 26 gave diketone 27. Treatment of 27 with OsO4 and N‐methylmorpholine N‐oxide gave dihydroxy ketone 28. Methylation of the primary alcohol group in 28 afforded dimethyl gloiosiphone A (2).

  DOI：

  10.1002/jccs.199900064

文献信息

• Intramolecular radical cyclization of silylacetylenic or olefinic α-iodo ketones: Application to the total synthesis of (±)-modhephene
  作者：Sha Chin-Kang、Jean Tsong-Shin、Wang Deh-Chi

  DOI：10.1016/s0040-4039(00)97460-4

  日期：——

  Silylacetylenic or olefinic α-iodo ketones were treated with tributyltin hydride and AIBN to give bicyclic ketones by an intramolecular α-carbonyl radical cyclization reaction. As an application of this radical cyclization reaction, the total synthesis of (±)-modhephene has been accomplished efficiently.

  用氢化三丁基锡和AIBN处理甲硅烷基或烯属α-碘酮，通过分子内α-羰基自由基环化反应得到双环酮。作为该自由基环化反应的一种应用，已经有效地完成了（±）-二苯乙烯的全合成。
• SHA, CHIN-KANG;JEAN, TSONG-SHIN;WANG, DEH-CHI, TETRAHEDRON LETT., 31,(1990) N6, C. 3745-3748
  作者：SHA, CHIN-KANG、JEAN, TSONG-SHIN、WANG, DEH-CHI

  DOI：——

  日期：——
• Total Synthesis of Dimethyl Glolosiphone A<i>via</i>α-Carbonyl Radical Spiro-Cyclization
  作者：Chin-Kang Sha、Wen-Yueh Ho

  DOI：10.1002/jccs.199900064

  日期：1999.6

  AbstractA general approach toward spiro[4.4]nonane structure based on the α‐carbonyl radical cyclization has been developed. Efficient total synthesis of dimethyl gloiosiphone A (2) was achieved. Thus, alkylation of the anion of dimethylhydrazone of cyclopentanone with 5‐iodopent‐1‐yne followed by hydrolysis gave ketone 4. Iodination of 4 via its TMS‐enol ether yielded iodo ketone 7. Radical spiro‐cyclization of 7 gave spiro ketone 10. Iodination of 10 afford iodo spiro ketone 23. Oxidation and iodination of 23 gave compound 24. Methylation of 24 furnished methoxy iodo enone 25. Substitution of iodide in 25 with methoxide produced dimethoxy enone 26. Allylic oxidation of 26 gave diketone 27. Treatment of 27 with OsO4 and N‐methylmorpholine N‐oxide gave dihydroxy ketone 28. Methylation of the primary alcohol group in 28 afforded dimethyl gloiosiphone A (2).