2,5-Dimethyl-cyclopent-3-en-1-on | 4041-10-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,5-Dimethyl-cyclopent-3-en-1-on
• 英文别名: 2,5-dimethyl-cyclopent-3-enone；2,5-Dimethyl-cyclopent-3-enon；2,5-Dimethylcyclopent-3-en-1-one
• CAS: 4041-10-5
• 化学式: C₇H₁₀O
• 分子量: 110.156
• InChiKey: YVNUZVLSGIDLKB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,5-Dimethyl-cyclopent-3-en-1-on 、 phenylmagnesium bromide 生成 2,5-dimethyl-1-phenyl-cyclopent-3-enol
  参考文献：
  名称：

  Daschkewitsch, Ukrainskij Khimicheskij Zhurnal, 1956, vol. 22, p. 493

  摘要：

  DOI：
• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 生成 2,5-Dimethyl-cyclopent-3-en-1-on
  参考文献：
  名称：

  Daschkewitsch, Doklady Akademii Nauk SSSR, 1956, vol. 107, p. 700

  摘要：

  DOI：

文献信息

• Continuous process for production of methacrylic acid ester of C1 to C4 aliphatic alcohol
  申请人：AMOCO CORPORATION

  公开号：EP0255773A2

  公开（公告）日：1988-02-10

  A continuous process for the production of a metha­crylic acid ester of a C₁ to C₄ saturated aliphatic alco­hol in the presence of a catalyst is disclosed. This process contemplates continuously introducing into a plug-­flow reactor a feed stream containing methacrylic acid, a C₁ to C₄ saturated aliphatic alcohol in stoichiometric excess relative to the methacrylic acid present, an ester­ification catalyst, and a liquid organic substance having a volatility no greater than that of methacrylic acid. The feed stream thus introduced into the plug-flow reactor is preferably maintained at substantially atmospheric pressure, while the contained methacrylic acid reactant is held at an esterification temperature and for a time period sufficient to esterify at least a portion of the introduced methacrylic acid. The admixture thus produced is continuously fractionated, preferably in a distillation zone or column, into a vaporized distillate stream and a liquid bottoms stream. The distillate stream has a rela­tively greater methacrylic acid ester content than the bottoms stream. A portion of the bottoms stream, consti­tuted primarily by the liquid organic substance and the esterification catalyst, is recycled to the reactor while the remainder is purged.

  本发明公开了一种在催化剂存在下生产 C₁ 至 C₄ 饱和脂肪醇的甲基丙烯酸酯的连续工艺。该工艺考虑向塞流反应器中连续导入进料流，进料流中含有甲基丙烯酸、相对于所含甲基丙烯酸按化学计量过量的 C₁ 至 C₄ 饱和脂肪醇、酯化催化剂和挥发性不大于甲基丙烯酸的液态有机物。这样引入塞流式反应器的进料流最好保持在基本大气压下，而所含的甲基丙烯酸反应物则保持在酯化温度下，并有足够的时间使至少一部分引入的甲基丙烯酸酯化。这样产生的混合物被连续分馏，最好是在蒸馏区或蒸馏塔中分馏成气化蒸馏物流和液态底部流。馏出液的甲基丙烯酸酯含量相对高于底液。主要由液态有机物和酯化催化剂构成的部分底流被回收到反应器中，而其余部分被净化。
• US4748268A
  申请人：——

  公开号：US4748268A

  公开（公告）日：1988-05-31
• Daschkewitsch, Ukrainskij Khimicheskij Zhurnal, 1956, vol. 22, p. 493
  作者：Daschkewitsch

  DOI：——

  日期：——
• Daschkewitsch, Doklady Akademii Nauk SSSR, <hi>1956</hi>, vol. 107, p. 700
  作者：Daschkewitsch

  DOI：——

  日期：——