(4R)-Methyloctanol | 171627-79-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (4R)-Methyloctanol
• 英文别名: (4R)-4-methyloctanal
• CAS: 171627-79-5
• 化学式: C₉H₁₈O
• 分子量: 142.241
• InChiKey: GRRNPXSTCFOUCZ-SECBINFHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  10
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (4R)-Methyloctanol 在 potassium permanganate 作用下， 生成 (4R)-Ethyl 4-methyloctanoate
  参考文献：
  名称：

  Aggregation pheromone of coconut rhinoceros beetle,Oryctes rhinoceros (L.) (coleoptera: Scarabaeidae)

  摘要：

  Male coconut minoceros beetles, Oryctes rhinoceros (L.), produce three sex-specific compounds, ethyl 4-methyloctanoate, ethyl 4-methylheptanoate, and 4-methyloctanoic acid, the first of which is an aggregation pheromone. Synthesis of these compounds involving conjugate addition of organocuprates to ethyl acrylate is reported. In field trapping experiments, (4S)-ethyl-4-methyloctanoate and the racemic mixture were equally attractive and 10 times more effective in attracting beetles than ethyl chrysanthemumate, a previously recommended attractant. Ethyl 4-methylheptanoate was as attractive as ethyl chrysanthemumate and more attractive than 4-methyloctanoic acid, but further studies are required before it can be classed as an aggregation pheromone. Compared to ethyl 4-methyloctanoate alone, combinations of the three male-produced compounds did not increase attraction, whereas addition of freshly rotting oil palm fruit bunches to pheromone-baited traps significantly enhanced attraction. With increasing dose, captures of O. rhinoceros increased, but doses of 6, 9, and 18 mg/day were competitive with 30 mg/day lures. Newly designed vane traps were more effective in capturing beetles than were barrier or pitfall traps. Results of this study indicate that there is potential for using ethyl 4-methyloctanoate in operational programs to control O. rhinoceros in oil palm plantations.

  DOI：

  10.1007/bf02035152
• 作为产物：
  描述：

  (S)-(-)-β-香茅醇 在 吡啶 、 4-二甲氨基吡啶 、 2,3-二巯基丁二酸 、 臭氧 作用下， 生成 (4R)-Methyloctanol
  参考文献：
  名称：

  Aggregation pheromone of coconut rhinoceros beetle,Oryctes rhinoceros (L.) (coleoptera: Scarabaeidae)

  摘要：

  Male coconut minoceros beetles, Oryctes rhinoceros (L.), produce three sex-specific compounds, ethyl 4-methyloctanoate, ethyl 4-methylheptanoate, and 4-methyloctanoic acid, the first of which is an aggregation pheromone. Synthesis of these compounds involving conjugate addition of organocuprates to ethyl acrylate is reported. In field trapping experiments, (4S)-ethyl-4-methyloctanoate and the racemic mixture were equally attractive and 10 times more effective in attracting beetles than ethyl chrysanthemumate, a previously recommended attractant. Ethyl 4-methylheptanoate was as attractive as ethyl chrysanthemumate and more attractive than 4-methyloctanoic acid, but further studies are required before it can be classed as an aggregation pheromone. Compared to ethyl 4-methyloctanoate alone, combinations of the three male-produced compounds did not increase attraction, whereas addition of freshly rotting oil palm fruit bunches to pheromone-baited traps significantly enhanced attraction. With increasing dose, captures of O. rhinoceros increased, but doses of 6, 9, and 18 mg/day were competitive with 30 mg/day lures. Newly designed vane traps were more effective in capturing beetles than were barrier or pitfall traps. Results of this study indicate that there is potential for using ethyl 4-methyloctanoate in operational programs to control O. rhinoceros in oil palm plantations.

  DOI：

  10.1007/bf02035152

文献信息

• Chiral Aggregates Formed from Methylated Tetraenoic Fatty Acids:  Formation of Both Antipodes of Chiral Aggregates from a Single Enantiomer and Time-Dependent Stereomutation
  作者：Jianguo Ma、Hwan-Sung Cheon、Yoshito Kishi

  DOI：10.1021/ol062834d

  日期：2007.1.1

  Formation and behaviors of chiral aggregates of methylated tetraenoic fatty acids (TE-FAs) were reported. In the C-24 TE-FA series, the aggregate prepared by dispersing an ethanol stock solution of C-24 TE-FA 1b into sodium phosphate buffer gave a strong positive Cotton effect, whereas the aggregate prepared from a methanol stock solution gave a negative Cotton effect. In the C-20 TE-FA series, the

  甲基化的丁烯二酸（TE-FAs）的手性聚集体的形成和行为已有报道。在C-24 TE-FA系列中，通过将C-24 TE-FA 1b的乙醇储备溶液分散到磷酸钠缓冲液中制备的聚集体产生很强的棉花效应，而由甲醇储备溶液制备的聚集体产生负的棉花效应。棉花效果。在C-20 TE-FA系列中，由C-20 TE-FA 2b的乙醇储备溶液制得的聚集体表现出随时间变化的手性反转。[见文字]。