2-methyl-3-thiophen-3-ylpropanol | 26420-04-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 杂芳族化合物
• 英文名称: 2-methyl-3-thiophen-3-ylpropanol
• 英文别名: 2-Methyl-3-(3-thienyl)propan-1-ol；2-Methyl-3-thiophen-3-ylpropan-1-ol
• CAS: 26420-04-2
• 化学式: C₈H₁₂OS
• 分子量: 156.249
• InChiKey: GJIDIYVVDJDRPC-UHFFFAOYSA-N

物化性质

• 沸点：
  252.7±15.0 °C(Predicted)
• 密度：
  1.095±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  10
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  48.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-methyl-3-thiophen-3-ylpropanol 在 Amano PS sodium hydroxide 、 乙酸乙烯酯 、 四氯化锡 、 肼 作用下， 以 二氯甲烷 、 乙二醇 为溶剂， 反应 1.0h， 生成 (S)-(5-Ethyl-3-thienyl)-2-methylpropan-1-ol
  参考文献：
  名称：

  Kinetic resolution of primary 2-methyl-substituted alcohols via Pseudomonas cepacia lipase-catalysed enantioselective acylation

  摘要：

  研究了来自洋葱伯克霍尔德菌（Pseudomonas cepacia）的脂肪酶（如PFL、Amano PS等）在对一系列一级2-甲基取代醇使用乙酸乙烯酯作为酰基供体进行有机溶剂中的转酯化反应时的对映选择性。在对映选择性方面，最佳结果出现在3-芳基-2-甲基丙-1-醇中，大多数情况下对映体比例（E值）超过100，而其他3-取代的一级2-甲基丙-1-醇通常显示出较低的对映选择性：3-环烷基-2-甲基丙-1-醇（E ≈ 20）和2-甲基烷-1-醇（E ≈ 10）。将芳基团更靠近或远离手性中心会导致低对映选择性：2-芳基丙-1-醇（E < 10）、2-甲基-4-（2-噻吩基）丁-1-醇（E = 12）、2-甲基-5-（2-噻吩基）戊-1-醇（E = 3.2）和2-甲基-6-（2-噻吩基）己-1-醇（E = 3.8）。

  DOI：

  10.1039/a908023f
• 作为产物：
  描述：

  2-Methyl-2-thiophen-3-ylmethyl-malonic acid 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 反应 19.0h， 生成 2-methyl-3-thiophen-3-ylpropanol
  参考文献：
  名称：

  Sex Pheromone of the Pine Sawfly, Macrodiprion nemoralis. Stereoselective Synthesis of the Sixteen Stereoisomers of 3,7,9-Trimethyl-2-tridecyl Acetate.

  摘要：

  The sixteen stereoisomers of 3,7,9-trimethyl-2-tridecyl acetate (5Ac) were prepared individually, each in over 99.5% stereochemical purity. The syntheses were based on the ring opening of a pure enantiomer of cis-3,4-dimethyl-gamma-butyrolactone using a pure stereoisomer of 1-lithio-2,4-dimethyloctane, the two stereogenic centres of which were introduced with high selectivity by alkylations of the amide enolates from the appropriate enantiomers of pseudoephedrine. (2S,3R,7R,9S)-3,7,9-Trimethyl-2-tridecyl acetate (SRRS-5Ac) has recently been found to be the major component of the female sex pheromone of Macrodiprion nemoralis (Hymenoptera: Diprionidae). A synthetic method for the preparation of a sixteen isomer mixture of 5Ac is also presented. This mixture has been found to be biologically active in field tests.

  DOI：

  10.3891/acta.chem.scand.53-0620

文献信息

• Kinetic resolution of primary 2-methyl-substituted alcohols via Pseudomonas cepacia lipase-catalysed enantioselective acylation
  作者：Ove Nordin、Ba-Vu Nguyen、Carin Vörde、Erik Hedenström、Hans-Erik Högberg

  DOI：10.1039/a908023f

  日期：——

  The enantioselectivities of lipases from Pseudomonas cepacia (PFL, Amano PS, etc.) towards a series of primary 2-methyl-substituted alcohols using vinyl acetate as the acyl donor in transesterifications in organic solvents were studied. In terms of enantioselectivity, the best results were found for 3-aryl-2-methylpropan-1-ols with enantiomeric ratios (E-values) over 100 in most cases, whereas other 3-substituted primary 2-methylpropan-1-ols generally displayed lower enantioselectivities: 3-cycloalkyl-2-methylpropan-1-ols (E ≈ 20) and 2-methylalkan-1-ols (E ≈ 10). Moving the aryl group closer or further away from the chiral centre resulted in low enantioselectivities: 2-arylpropan-1-ols (E < 10), 2-methyl-4-(2-thienyl)butan-1-ol (E = 12), 2-methyl-5-(2-thienyl)pentan-1-ol (E = 3.2) and 2-methyl-6-(2-thienyl)hexan-1-ol (E = 3.8).

  研究了来自洋葱伯克霍尔德菌（Pseudomonas cepacia）的脂肪酶（如PFL、Amano PS等）在对一系列一级2-甲基取代醇使用乙酸乙烯酯作为酰基供体进行有机溶剂中的转酯化反应时的对映选择性。在对映选择性方面，最佳结果出现在3-芳基-2-甲基丙-1-醇中，大多数情况下对映体比例（E值）超过100，而其他3-取代的一级2-甲基丙-1-醇通常显示出较低的对映选择性：3-环烷基-2-甲基丙-1-醇（E ≈ 20）和2-甲基烷-1-醇（E ≈ 10）。将芳基团更靠近或远离手性中心会导致低对映选择性：2-芳基丙-1-醇（E < 10）、2-甲基-4-（2-噻吩基）丁-1-醇（E = 12）、2-甲基-5-（2-噻吩基）戊-1-醇（E = 3.2）和2-甲基-6-（2-噻吩基）己-1-醇（E = 3.8）。
• Sex Pheromone of the Pine Sawfly, Macrodiprion nemoralis. Stereoselective Synthesis of the Sixteen Stereoisomers of 3,7,9-Trimethyl-2-tridecyl Acetate.
  作者：Staffan Karlsson、Erik Hedenström、Luis Lezama、María I. Arriortua、Margareta Björkman、Benita H. Forngren、Tobias Forngren、Per Hartvig、Karin Markides、Ulrika Yngve、Mattias Ögren

  DOI：10.3891/acta.chem.scand.53-0620

  日期：——

  The sixteen stereoisomers of 3,7,9-trimethyl-2-tridecyl acetate (5Ac) were prepared individually, each in over 99.5% stereochemical purity. The syntheses were based on the ring opening of a pure enantiomer of cis-3,4-dimethyl-gamma-butyrolactone using a pure stereoisomer of 1-lithio-2,4-dimethyloctane, the two stereogenic centres of which were introduced with high selectivity by alkylations of the amide enolates from the appropriate enantiomers of pseudoephedrine. (2S,3R,7R,9S)-3,7,9-Trimethyl-2-tridecyl acetate (SRRS-5Ac) has recently been found to be the major component of the female sex pheromone of Macrodiprion nemoralis (Hymenoptera: Diprionidae). A synthetic method for the preparation of a sixteen isomer mixture of 5Ac is also presented. This mixture has been found to be biologically active in field tests.