2,5-dimethyl-3,4-dihydro-2H-pyran-2-carboxylic acid methyl ester | 1197-77-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 2,5-dimethyl-3,4-dihydro-2H-pyran-2-carboxylic acid methyl ester
• 英文别名: 2,5-Dimethyl-3,4-dihydro-2H-pyran-2-carbonsaeure-methylester；Methyl 2,5-dimethyl-3,4-dihydropyran-2-carboxylate
• CAS: 1197-77-9
• 化学式: C₉H₁₄O₃
• 分子量: 170.208
• InChiKey: PCDJYRIBHYVBSG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-甲基丙烯醛 、 甲基丙烯酸甲酯 在 对苯二酚 作用下， 生成 2,5-dimethyl-3,4-dihydro-2H-pyran-2-carboxylic acid methyl ester
  参考文献：
  名称：

  Reactions of Acrolein and Related Compounds. I. Addition of Vinyl Ethers

  摘要：

  DOI：

  10.1021/ja01155a076

文献信息

• Catalyst for the oxidative esterification of aldehydes to carboxylic esters
  申请人：Roehm GmbH

  公开号：US11279667B2

  公开（公告）日：2022-03-22

  The present invention relates to a novel process for oxidative esterification, generally for reaction of aldehydes with alcohols in the presence of oxygenous gases directly to give the corresponding ester in the presence of a heterogeneous catalyst, by means of which, for example, (meth)acrolein can be converted to methyl (meth)acrylate. The new catalyst has titanium dioxide as the main component of the support material. The catalysts are especially notable for high mechanical and chemical stability and for good catalytic performance even over very long periods. The process is an improvement in the catalyst service life, activity and selectivity over prior art catalysts which lose activity and/or selectivity relatively quickly in continuous operation in media having even a small water content.

  本发明涉及一种氧化酯化的新工艺，一般是指醛与醇在含氧气体存在下直接反应，在异相催化剂存在下生成相应的酯，例如，通过这种方法，（甲基）丙烯醛可以转化为（甲基）丙烯酸甲酯。新型催化剂以二氧化钛作为支撑材料的主要成分。这种催化剂具有很高的机械稳定性和化学稳定性，即使在很长时间内也具有良好的催化性能。与现有技术的催化剂相比，该工艺提高了催化剂的使用寿命、活性和选择性，因为现有技术的催化剂在含水量很小的介质中连续工作时，活性和/或选择性会相对较快丧失。
• CATALYST FOR THE OXIDATIVE ESTERIFICATION OF ALDEHYDES TO CARBOXYLIC ESTERS
  申请人：Evonik Roehm GmbH

  公开号：US20190084914A1

  公开（公告）日：2019-03-21

  The present invention relates to a novel process for oxidative esterification, generally for reaction of aldehydes with alcohols in the presence of oxygenous gases directly to give the corresponding ester in the presence of a heterogeneous catalyst, by means of which, for example, (meth)acrolein can be converted to methyl (meth)acrylate. The new catalyst has titanium dioxide as the main component of the support material. The catalysts are especially notable for high mechanical and chemical stability and for good catalytic performance even over very long periods. The process is an improvement in the catalyst service life, activity and selectivity over prior art catalysts which lose activity and/or selectivity relatively quickly in continuous operation in media having even a small water content.
• US4107289A
  申请人：——

  公开号：US4107289A

  公开（公告）日：1978-08-15
• Reactions of Acrolein and Related Compounds. I. Addition of Vinyl Ethers
  作者：Curtis W. Smith、Douglas G. Norton、Seaver A. Ballard

  DOI：10.1021/ja01155a076

  日期：1951.11