2-vinyltetrahydro-2H-pyran | 52426-83-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧烷类
• 英文名称: 2-vinyltetrahydro-2H-pyran
• 英文别名: 2-vinyltetrahydropyran；2-ethenyloxane
• CAS: 52426-83-2
• 化学式: C₇H₁₂O
• 分子量: 112.172
• InChiKey: YFTHPAKWQBTOLK-UHFFFAOYSA-N

物化性质

• 沸点：
  130 °C
• 密度：
  0.8869 g/cm3

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  8
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-vinyltetrahydro-2H-pyran 在 Rh/Al₂O₃ 作用下， 以 正己烷 为溶剂， 生成 2-ethyltetrahydropyran
  参考文献：
  名称：

  Carbon-13 NMR spectra of saturated heterocycles: XI—Tetrahydropyrans (oxanes)

  摘要：

  AbstractThe 13C NMR spectra of 62 oxanes (tetrahydropyrans) with and without methyl substituents at various ring positions, some of them bearing in addition (or instead) ethyl, vinyl, ethynyl, carbomethoxy and methylol substituents at C‐2, have been recorded, and the 294 resulting chemical shifts have been correlated by multiple linear regression analysis. Axial and equatorial α‐, β‐, γ‐, δ‐, gem‐ and vic‐parameters for shifts caused by methyl groups at all ring positions, and similar parameters for Et,—CHCH2,—CCH, CO2Me and CH2OH groups at C‐2, are reported. Standard deviations of the parameters are, in most cases, within 0.3 ppm and the agreement of calculated and experimental shifts is excellent. This is probably the largest parameter set of this type extant. 13C NMR spectra of a number of additional substituted tetrahydropyrans, and of 3,6‐dihydro‐2H‐pyrans and 3,4‐dihydro‐2H‐pyrans, are tabulated and discussed.

  DOI：

  10.1002/omr.1270210205
• 作为产物：
  描述：

  2-ethynyltetrahydropyran 在 palladium on activated charcoal 氢气 作用下， 以 环己烷 为溶剂， 生成 2-vinyltetrahydro-2H-pyran
  参考文献：
  名称：

  Carbon-13 NMR spectra of saturated heterocycles: XI—Tetrahydropyrans (oxanes)

  摘要：

  AbstractThe 13C NMR spectra of 62 oxanes (tetrahydropyrans) with and without methyl substituents at various ring positions, some of them bearing in addition (or instead) ethyl, vinyl, ethynyl, carbomethoxy and methylol substituents at C‐2, have been recorded, and the 294 resulting chemical shifts have been correlated by multiple linear regression analysis. Axial and equatorial α‐, β‐, γ‐, δ‐, gem‐ and vic‐parameters for shifts caused by methyl groups at all ring positions, and similar parameters for Et,—CHCH2,—CCH, CO2Me and CH2OH groups at C‐2, are reported. Standard deviations of the parameters are, in most cases, within 0.3 ppm and the agreement of calculated and experimental shifts is excellent. This is probably the largest parameter set of this type extant. 13C NMR spectra of a number of additional substituted tetrahydropyrans, and of 3,6‐dihydro‐2H‐pyrans and 3,4‐dihydro‐2H‐pyrans, are tabulated and discussed.

  DOI：

  10.1002/omr.1270210205

文献信息

• Highly Active Au(I) Catalyst for the Intramolecular <i>e</i><i>xo</i>-Hydrofunctionalization of Allenes with Carbon, Nitrogen, and Oxygen Nucleophiles
  作者：Zhibin Zhang、Cong Liu、Robert E. Kinder、Xiaoqing Han、Hua Qian、Ross A. Widenhoefer

  DOI：10.1021/ja062045r

  日期：2006.7.19

  Au-catalyzed intramolecular hydroalkoxylation within minutes at room temperature to form the corresponding oxygen heterocycles in good yield with high exo-selectivity. 2-Allenyl indoles underwent Au-catalyzed intramolecular hydroarylation within minutes at room temperature to form 4-vinyl tetrahydrocarbazoles in good yield. Au-catalyzed cyclization of N-allenyl carbamates, allenyl alcohols, and 2-allenyl

  (2,2-二苯基-4,5-己二烯基)氨基甲酸苄酯 (4) 与 Au[P(t-Bu)2(o-biphenyl)]Cl (2) 和 AgOTf 的 1:1 催化混合物反应5 mol%) 在二恶烷中在 25 摄氏度下 45 分钟导致 4,4-二苯基-2-乙烯基吡咯烷-1-羧酸苄酯 (5) 的分离，产率为 95%。Au(I) 催化的 N-烯丙氨基甲酸酯的分子内加氢胺化耐受烷基和烯基碳原子处的取代，并且对于哌啶衍生物的形成是有效的。γ-羟基和δ-羟基丙二烯也在室温下几分钟内经历了金催化的分子内加氢烷氧基化，以高产率和高外选择性形成相应的氧杂环。2-烯基吲哚在室温下几分钟内经历金催化的分子内加氢芳基化，以良好的产率形成4-乙烯基四氢咔唑。
• Design, Synthesis, and Structural Analysis of Cladosporin-Based Inhibitors of Malaria Parasites
  作者：Palak Babbar、Pronay Das、Yogavel Manickam、Yash Mankad、Swati Yadav、Suhel Parvez、Amit Sharma、D. Srinivasa Reddy

  DOI：10.1021/acsinfecdis.1c00092

  日期：2021.6.11

  throughput enzymatic and parasitic assays along with in vitro pharmacokinetics. Co-crystallization of the most potent compound in our series (CL-2) with PfKRS revealed its structural basis of enzymatic binding and potency. Further, we report that CL-2 has performed better than cladosporin in terms of metabolic stability. It thus represents a new lead for further optimization toward the development of antimalarial

  在这里，我们描述了一组受枝孢菌素启发的化合物的系统构效关系 (SAR)，枝孢菌素是一种靶向寄生虫（恶性疟原虫）赖氨酰 tRNA 合成酶 (KRS)的工具化合物。使用高通量酶促和寄生虫测定以及体外药代动力学评估了基于枝孢菌素化学支架的点变化和其他逻辑修饰和杂交合成的四组类似物。我们系列中最有效的化合物 ( CL-2 ) 与Pf KRS 的共结晶揭示了其酶促结合和效力的结构基础。此外，我们报告说CL-2在代谢稳定性方面表现优于枝孢菌素。因此，它代表了进一步优化抗疟药物开发的新线索。总的来说，该系列与先导化合物一起提供了关于即使是最轻微的化学修饰如何在增强或降低化学支架效力方面发挥重要作用的见解。
• HETEROCYCLIC IONIC LIQUIDS
  申请人：NOHMs Technologies, Inc.

  公开号：US20170305869A1

  公开（公告）日：2017-10-26

  An ionic liquid compound includes an azepanium-functionalized cation. An electrochemical cell electrolyte for an electrical energy storage device includes the ionic liquid compound, aprotic organic solvent, alkali metal salt and an additive.

  一种离子液体化合物包括一个氮杂环庚基功能化的阳离子。一种用于电能存储装置的电解质电池包括该离子液体化合物、无质子有机溶剂、碱金属盐和一种添加剂。
• Enantioselective Iridium-Catalyzed Allylic Cyclizations
  作者：Michael A. Schafroth、Stephan M. Rummelt、David Sarlah、Erick M. Carreira

  DOI：10.1021/acs.orglett.7b01346

  日期：2017.6.16

  systems enabled through the combination of Lewis acid activation and iridium-catalyzed allylic substitution is described. The reaction proceeds with branched, allylic alcohols and carbon nucleophiles as well as heteronucleophiles to give a diverse set of ring systems in good yields and with high enantioselectivities. The utility of the method is highlighted by the asymmetric syntheses of erythrococcamides

  描述了通过路易斯酸活化和铱催化的烯丙基取代的组合实现的碳和杂环系统的对映选择性合成的方法。该反应与支链的烯丙基醇和碳亲核试剂以及杂亲核试剂一起进行，以高收率和高对映选择性提供了各种不同的环系统。该方法的实用性由赤藓糖甲酰胺A和B的不对称合成突出显示。
• Heterocycle Synthesis Based on Allylic Alcohol Transposition Using Traceless Trapping Groups
  作者：Youwei Xie、Paul E. Floreancig

  DOI：10.1002/anie.201402010

  日期：2014.5.5

  Allylic alcohols undergo transposition reactions in the presence of Re2O7 whereby the equilibrium can be dictated by trapping one isomer with a pendent electrophile. Additional ionization can occur when the trapping group is an aldehyde or ketone, thus leading to cyclic oxocarbenium ion formation. Terminating the process through bimolecular nucleophilic addition into the intermediate provides a versatile

  烯丙醇在Re 2 O 7的存在下进行转座反应，从而可以通过用一种亲电亲和剂捕获一种异构体来控制平衡。当捕获基团是醛或酮时，可能会发生其他电离，从而导致形成环氧碳鎓离子。通过将双分子亲核加成至中间物来终止该过程，为合成各种含氧杂环化合物提供了一种通用的方法。了解序列中各步骤的相对速率会导致设计反应，从而创建多个具有良好至极佳控制水平的立体中心。

表征谱图