1,2-dimethoxy-4-(2-methoxypropyl)benzene | 175096-38-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 1,2-dimethoxy-4-(2-methoxypropyl)benzene
• CAS: 175096-38-5
• 化学式: C₁₂H₁₈O₃
• 分子量: 210.273
• InChiKey: WKKUMNPCUCJRRE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  15
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1,2-dimethoxy-4-(2-methoxypropyl)benzene 、 丙烯酸乙酯 在 silver carbonate 、 palladium diacetate 、 N-乙酰甘氨酸 作用下， 反应 48.0h， 以84%的产率得到(E)-ethyl 3-(4,5-dimethoxy-2-(2-methoxypropyl)phenyl)acrylate
  参考文献：
  名称：

  使用钯(II)/单保护氨基酸催化剂进行醚引导的邻位 C-H 烯化

  摘要：

  弱协调能力强！通过使用单保护氨基酸 (MPAA) 配体，开发了由弱配位醚引导的Pd II催化芳烃邻位C  H 键的烯化反应。这一发现提供了一种对醚进行化学修饰的方法，醚在天然产物和药物分子中含量丰富。HFIP=六氟异丙醇。

  DOI：

  10.1002/anie.201207770
• 作为产物：
  描述：

  甲醇 、 甲基丁香酚 在 Carreira’s cobalt catalyst 、 1,1,3,3-tetramethyldisiloxane 、 1-fluoro-2,4,6-trimethylpyridin-1-ium tetrafluoroborate 作用下， 反应 17.0h， 以96%的产率得到1,2-dimethoxy-4-(2-methoxypropyl)benzene
  参考文献：
  名称：

  Hydroalkoxylation of Unactivated Olefins with Carbon Radicals and Carbocation Species as Key Intermediates

  摘要：

  A unique Markovnikov hydroalkoxylation of unactivated olefins with a cobalt complex, silane, and N-fluoropyridinium salt is reported. Further optimization of reaction conditions yielded high functional group tolerance and versatility of alcoholic solvent employed, including methanol, i-propanol, and t-butanol. Use of trifluorotoluene as a solvent made the use of alcohol in stoichiometric amount possible. Mechanistic insight into this novel catalytic system is also discussed. Experimental results suggest that catalysis involves both carbon radical and carbocation intermediates.

  DOI：

  10.1021/ja405219f

文献信息

• [EN] A PROCESS FOR THE PREPARATION OF PHARMACOLOGICALLY ACTIVE ALPHA-ASARONE FROM TOXIC BETA-ASARONE RICH ACORUS CALAMUS OIL<br/>[FR] PROCEDE DE PREPARATION DE ALPHA-ASARONE A ACTIVITE PHARMACOLOGIQUE A PARTIR D'UNE HUILE D'ACORE ODORANT RICHE EN BETA-ASARONE
  申请人：COUNCIL SCIENT IND RES

  公开号：WO2003082786A1

  公开（公告）日：2003-10-09

  The present invention relates to a process for the preparation of high purity and yield α-asarone, trans 2,4,5-trimethoxy cinnamaldehyde, 2,4,5-trimethoxy-phenyl propionone, from β-asarone or β-asarone rich Acorus calamus oil containing α and η-asarone by hydrogenating, followed by treatment with DDQ with or without solid support of silica gel or alumina in dry organic solvent and α-asarone can also be obtained by treating the hydrogenated product of β-asarone or β-asarone rich Acorus calamus with DDQ in an aqueous organic solvent to obtain an intermediate 2,4,5-trimethoxy phenyl propionone, which in turn is reduced with sodiumborohydride to obtain the corresponding 2,4,5-trimethoxy-phenyl propanol and followed by final treatment with a dehydrating agent.

  本发明涉及一种从含有α和η-芳香烃的β-芳香烃或β-芳香烃丰富的菖蒲油中通过加氢后用DDQ处理的高纯度和高产率α-芳香烃、顺式2,4,5-三甲氧基肉桂醛、2,4,5-三甲氧基苯丙酮的制备方法，其中可以在干有机溶剂中使用硅胶或氧化铝固体载体，也可以通过在水有机溶剂中处理β-芳香烃或β-芳香烃丰富的菖蒲油的加氢产物以获得中间体2,4,5-三甲氧基苯丙酮，然后用氢硼酸钠还原获得相应的2,4,5-三甲氧基苯丙醇，最后用脱水剂进行最终处理以获得α-芳香烃。
• US6590127B1
  申请人：——

  公开号：US6590127B1

  公开（公告）日：2003-07-08
• Hydroalkoxylation of Unactivated Olefins with Carbon Radicals and Carbocation Species as Key Intermediates
  作者：Hiroki Shigehisa、Tatsuya Aoki、Sumiko Yamaguchi、Nao Shimizu、Kou Hiroya

  DOI：10.1021/ja405219f

  日期：2013.7.17

  A unique Markovnikov hydroalkoxylation of unactivated olefins with a cobalt complex, silane, and N-fluoropyridinium salt is reported. Further optimization of reaction conditions yielded high functional group tolerance and versatility of alcoholic solvent employed, including methanol, i-propanol, and t-butanol. Use of trifluorotoluene as a solvent made the use of alcohol in stoichiometric amount possible. Mechanistic insight into this novel catalytic system is also discussed. Experimental results suggest that catalysis involves both carbon radical and carbocation intermediates.
• Ether-Directed<i>ortho</i>-C-H Olefination with a Palladium(II)/Monoprotected Amino Acid Catalyst
  作者：Gang Li、Dasheng Leow、Li Wan、Jin-Quan Yu

  DOI：10.1002/anie.201207770

  日期：2013.1.21

  Weak coordination is powerful! A PdII‐catalyzed olefination of ortho‐CH bonds of arenes directed by weakly coordinating ethers is developed by using monoprotected amino acid (MPAA) ligands. This finding provides a method for chemically modifying ethers, which are abundant in natural products and drug molecules. HFIP=hexafluoroisopropanol.

  弱协调能力强！通过使用单保护氨基酸 (MPAA) 配体，开发了由弱配位醚引导的Pd II催化芳烃邻位C  H 键的烯化反应。这一发现提供了一种对醚进行化学修饰的方法，醚在天然产物和药物分子中含量丰富。HFIP=六氟异丙醇。