(5-Ethyl-thiophen-2-yl)-methanol | 159058-69-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 英文名称: (5-Ethyl-thiophen-2-yl)-methanol
• 英文别名: (5-Ethylthiophen-2-YL)methanol
• CAS: 159058-69-2
• 化学式: C₇H₁₀OS
• 分子量: 142.222
• InChiKey: RJVLYDXHJFYJNL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  9
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 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：

  (5-Ethyl-thiophen-2-yl)-methanol 在 三乙胺 作用下， 以 乙醚 为溶剂， 反应 20.0h， 生成 2-ethylidene-5-methylene-2,5-dihydrothiophene
  参考文献：
  名称：

  Oligomerization of the Thiophene-Based p-Quinodimethanes 2,5-Dimethylene-2,5-dihydrothiophene and 2-Ethylidene-5-methylene-2,5-dihydrothiophene

  摘要：

  Flash vacuum pyrolysis (FVP) of (5-methyl-2-thiophene-yl)methyl benzoate (8) produces in ca. 75% yield 2,5-dimethylene-2,3-dihydrothiophene, S-monomer (3). S-Monomer 3 is relatively stable dissolved in carbon disulfide-chloroform at -78 degrees C. The structure of 3 is confirmed by its spectral properties. When a 0.17 M solution of S-monomer 3 was allowed to warm to room temperature, SS-dimer 5 ([2,2](2,5)thiophenophane, 14.7%), SSS-trimer 7 ([2,2,2](2,5)thiophenophane, 44.3%), and polymer were produced. A small amount (<1%) of an SSSS-tetramer was detected by GC/MS. The mechanism proposed for the formation of these oligomers involves the combination of two molecules of 3 to give an intermediate diradical (11) that can close to form dimer 5 or react with additional molecules of 3 to form the higher oligomers. Evidence for the trapping of diradical 11 by 2,5-dimethylene-2,5-dihydrofuran (O-monomer 2) was obtained. Co-oligomerization of S-monomer 3 and O-monomer 2 gave four compounds containing the thiophene moiety: OS-dimer 16, SS-dimer 5, OSS-trimer 17, and SSS-trimer 7. Some OO-dimer 4 was produced but no 000-trimer 6 was observed and only a trace of OOS-trimer 18 was detected. Additional support for the diradical mechanism was obtained from the study of the oligomerization of the methyl derivatives of 3,2-ethylidene-5-methylene-2,5-dihydrothiophene (10, E and Z isomers), prepared by the FVP of (5-ethyl-2-thiophene-yl)methyl benzoate (9). Oligomerization of 10 gave several dimers and trimers including two acyclic dimers that are accounted for by intramolecular disproportionation.

  DOI：

  10.1021/jo961528i
• 作为产物：
  描述：

  5-乙基-2-噻吩甲醛 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 反应 0.5h， 以89%的产率得到(5-Ethyl-thiophen-2-yl)-methanol
  参考文献：
  名称：

  Oligomerization of the Thiophene-Based p-Quinodimethanes 2,5-Dimethylene-2,5-dihydrothiophene and 2-Ethylidene-5-methylene-2,5-dihydrothiophene

  摘要：

  Flash vacuum pyrolysis (FVP) of (5-methyl-2-thiophene-yl)methyl benzoate (8) produces in ca. 75% yield 2,5-dimethylene-2,3-dihydrothiophene, S-monomer (3). S-Monomer 3 is relatively stable dissolved in carbon disulfide-chloroform at -78 degrees C. The structure of 3 is confirmed by its spectral properties. When a 0.17 M solution of S-monomer 3 was allowed to warm to room temperature, SS-dimer 5 ([2,2](2,5)thiophenophane, 14.7%), SSS-trimer 7 ([2,2,2](2,5)thiophenophane, 44.3%), and polymer were produced. A small amount (<1%) of an SSSS-tetramer was detected by GC/MS. The mechanism proposed for the formation of these oligomers involves the combination of two molecules of 3 to give an intermediate diradical (11) that can close to form dimer 5 or react with additional molecules of 3 to form the higher oligomers. Evidence for the trapping of diradical 11 by 2,5-dimethylene-2,5-dihydrofuran (O-monomer 2) was obtained. Co-oligomerization of S-monomer 3 and O-monomer 2 gave four compounds containing the thiophene moiety: OS-dimer 16, SS-dimer 5, OSS-trimer 17, and SSS-trimer 7. Some OO-dimer 4 was produced but no 000-trimer 6 was observed and only a trace of OOS-trimer 18 was detected. Additional support for the diradical mechanism was obtained from the study of the oligomerization of the methyl derivatives of 3,2-ethylidene-5-methylene-2,5-dihydrothiophene (10, E and Z isomers), prepared by the FVP of (5-ethyl-2-thiophene-yl)methyl benzoate (9). Oligomerization of 10 gave several dimers and trimers including two acyclic dimers that are accounted for by intramolecular disproportionation.

  DOI：

  10.1021/jo961528i

文献信息

• Structure–Odor Correlations in Homologous Series of Mercapto Furans and Mercapto Thiophenes Synthesized by Changing the Structural Motifs of the Key Coffee Odorant Furan-2-ylmethanethiol
  作者：Sebastian Schoenauer、Peter Schieberle

  DOI：10.1021/acs.jafc.8b00857

  日期：2018.4.25

  seeds. Its unique coffee-like odor quality elicited at very low concentrations, and the fact that only a very few compounds showing a similar structure have previously been described in foods make 1 a suitable candidate for structure–odor activity studies. To gain insight into the structural features needed to evoke a coffee-like odor at low concentrations, 46 heterocyclic mercaptans and thio ethers

  呋喃-2-基甲硫醇（2-糠硫醇； 2-FFT，1）是众所周知的烘烤和磨碎咖啡中的主要气味剂，先前还被广泛用于肉类，面包和烘焙等热处理食品中芝麻籽。其独特的咖啡香气质量非常低浓度引起，而事实上，呈现出类似的结构，只有极少数的化合物先前已在食品中描述使1结构-气味活性研究的合适人选。为了深入了解在低浓度下会发出类似咖啡的气味的结构特征，合成了46种杂环硫醇和硫醚，其中32种首次合成，并确定了它们的气味质量和气味阈值。巯基向3位的移动保持了咖啡样的香气，但是导致了气味阈值的增加。由于碳侧链的延长，硫醇基团与呋喃环的分离导致咖啡味气味的损失，并且还导致气味阈值的增加，尤其是对于ω-（呋喃-2-基）烷烃-在侧链中具有六个或七个碳原子的1-硫醇。呋喃环被噻吩环取代对大多数所研究化合物的气味特性没有显着影响，但是新合成的长链1-（呋喃-2-基）-和1-（噻吩-2-基）烷烃-1-硫醇引发了令人兴奋的百香果
• Process for producing heterocyclic aldehyde
  申请人：Shiomi Yasuhiro

  公开号：US20050124807A1

  公开（公告）日：2005-06-09

  The present invention provides a process for preparing a heterocyclic aldehyde by oxidizing a heterocyclic alcohol with high selectivity and high yield. Specifically, the heterocyclic aldehyde is prepared by reacting a heterocyclic compound having at least one hydroxymethyl group bonded to a carbon atom of a heterocyclic ring with a hypohalogenous acid salt in the presence of a base to oxidize the hydroxymethyl group, wherein reaction is conducted in the co-presence of a 2,2,6,6-tetramethylpiperidine-1-oxyl derivative having at least two 2,2,6,6-tetramethylpiperidine-1-oxyl-4-yl groups.

  本发明提供了一种通过氧化具有高选择性和高产率的杂环醇来制备杂环醛的方法。具体来说，通过将至少有一个羟甲基基团与杂环环的碳原子键合的杂环化合物与次氯酸盐在碱的存在下反应，氧化羟甲基基团来制备杂环醛，其中反应在共存至少具有两个2,2,6,6-四甲基哌啶-1-氧基-4-基团的2,2,6,6-四甲基哌啶-1-氧基-4-基团的2,2,6,6-四甲基哌啶-1-氧基-4-基团的共存下进行。
• C-glycoside derivatives and salts thereof
  申请人：Imamura Masakazu

  公开号：US20060122126A1

  公开（公告）日：2006-06-08

  The present invention provides C-glycoside derivatives and salts thereof, wherein B ring is bonded to A ring via —X— and A ring is directly bonded to the glucose residue, and it is usable as a Na + -glucose cotransporter inhibitor, especially for a therapeutic and/or preventive agent for diabetes such as insulin-dependent diabetes (type 1 diabetes) and insulin-independent diabetes (type 2 diabetes), as well as diabetes related diseases such as an insulin-resistant diseases and obesity.

  本发明提供了C-糖苷衍生物及其盐，其中B环通过—X—与A环连接，并且A环直接与葡萄糖残基连接，可用作Na+-葡萄糖共转运体抑制剂，特别是用于治疗和/或预防糖尿病，如胰岛素依赖性糖尿病（1型糖尿病）和胰岛素非依赖性糖尿病（2型糖尿病），以及与糖尿病相关的疾病，如胰岛素抵抗性疾病和肥胖症。
• Novel fused triazolones and the uses thereof
  申请人：Ashwell Susan

  公开号：US20070149560A1

  公开（公告）日：2007-06-28

  This invention relates to novel compounds having the structural diagram (I) and to their pharmaceutical compositions and to their methods of use. These novel compounds provide a treatment or prophylaxis of cancer.

  本发明涉及具有结构式(I)的新化合物，以及它们的药物组成物和使用方法。这些新化合物可提供癌症的治疗或预防。
• C-glycoside derivatives for the treatment of diabetes
  申请人：Astellas Pharma Inc.

  公开号：EP1980560A2

  公开（公告）日：2008-10-15

  The present invention provides C-glycoside derivatives and salts thereof, wherein B ring is bonded to A ring via -X- and A ring is directly bonded to the glucose residue, and it is usable as a Na+-glucose cotransporter inhibitor, especially for a therapeutic and/or preventive agent for diabetes such as insulin-dependent diabetes (type 1 diabetes) and insulin-independent diabetes (type 2 diabetes), as well as diabetes related diseases such as an insulin-resistant diseases and obesity.

  本发明提供了C-糖苷衍生物及其盐类，其中B环通过-X-与A环键合，A环直接与葡萄糖残基键合，可用作Na+-葡萄糖共转运体抑制剂，特别是用于治疗和/或预防糖尿病，如胰岛素依赖型糖尿病（1型糖尿病）和胰岛素非依赖型糖尿病（2型糖尿病），以及与糖尿病相关的疾病，如胰岛素抵抗性疾病和肥胖症。