cis-2,5-dimethyltetrahydropyran | 81554-07-6

• 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: cis-2,5-dimethyltetrahydropyran
• 英文别名: (2R,5S)-2,5-dimethyloxane
• CAS: 81554-07-6
• 化学式: C₇H₁₄O
• 分子量: 114.188
• InChiKey: YEJCHVFCLNKZPU-NKWVEPMBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  2-(carbomethoxy)-5methyl-3,4-dihydro-2H-pyran 在 platinum on activated charcoal 吡啶 、 lithium aluminium tetrahydride 、 氢气 作用下， 以 乙醚 、 乙醇 、 水 为溶剂， 生成 cis-2,5-dimethyltetrahydropyran
  参考文献：
  名称：

  Conformational analysis. 42. Monosubstituted tetrahydropyrans

  摘要：

  DOI：

  10.1021/ja00377a015

文献信息

• PRODUCTION METHOD FOR TETRAHYDRO-2H-PYRAN DERIVATIVE
  申请人：JNC Corporation

  公开号：EP3228617A1

  公开（公告）日：2017-10-11

  Provided is a production method for a tetrahydro-2H-pyran derivative suitable for industrial production, and an intermediate capable of efficiently synthesizing the derivative. The tetrahydro-2H-pyran-derivative is synthesized by applying compound (A), compound (B) or compound (C) as an intermediate. In compound (A), compound (B) and compound (C), R1 is alkyl, alkenyl or alkoxy, R2 is hydrogen or alkoxy, and X is a leaving group.

  本发明提供了一种适用于工业生产的四氢-2H-吡喃衍生物的生产方法，以及一种能够高效合成该衍生物的中间体。 四氢-2H-吡喃衍生物是以化合物（A）、化合物（B）或化合物（C）为中间体合成的。 在化合物（A）、化合物（B）和化合物（C）中，R1 是烷基、烯基或烷氧基，R2 是氢或烷氧基，X 是离去基团。
• EP3205652A1
  申请人：——

  公开号：EP3205652A1

  公开（公告）日：2017-08-16
• HYDROXYL PURINE COMPOUNDS AND APPLICATIONS THEREOF
  申请人：GUANGDONG ZHONGSHENG PHARMACEUTICAL CO., LTD

  公开号：US20170326149A1

  公开（公告）日：2017-11-16

  Hydroxyl purine compounds represented by formula (I), tautomers or pharmaceutically acceptable salts thereof, and applications thereof as PDE2 or TNF-α inhibitors.
• LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
  申请人：DIC Corporation

  公开号：US20180134961A1

  公开（公告）日：2018-05-17

  An object of the present invention is to provide a composition that realizes high Δn, has a wide liquid crystal phase temperature range, small viscosity, excellent low-temperature solubility, and high resistivity and voltage holding ratio, and is stable against heat and light, and to provide a liquid crystal composition having an excellent lens effect and excellent chemical stability using the composition, and a liquid crystal display device and a liquid crystal lens that use the liquid crystal composition. The present invention provides a liquid crystal composition that contains one or two or more compounds represented by general formula (i) and one or two or more compounds represented by general formula (ii), a liquid crystal display device using the liquid crystal composition, a liquid crystal lens using the liquid crystal composition, and a birefringence lens for stereoscopic image display using the liquid crystal composition.
• USRE49128E1
  申请人：——

  公开号：USRE49128E1

  公开（公告）日：2022-07-12