7,8-dimethyl-4-phenyl-3,4-dihydrobenzopyran-2-one | 331964-82-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 新黄酮类化合物
• 英文名称: 7,8-dimethyl-4-phenyl-3,4-dihydrobenzopyran-2-one
• 英文别名: 7,8-Dimethyl-4-phenylchroman-2-one；7,8-dimethyl-4-phenyl-3,4-dihydrochromen-2-one
• CAS: 331964-82-0
• 化学式: C₁₇H₁₆O₂
• mdl: MFCD01454482
• 分子量: 252.313
• InChiKey: OCOQOKDTOOUSDB-UHFFFAOYSA-N

物化性质

• 沸点：
  373.3±42.0 °C(Predicted)
• 密度：
  1.144±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  二甲酚 、 肉桂酸 在 碘 作用下， 反应 4.0h， 以83%的产率得到7,8-dimethyl-4-phenyl-3,4-dihydrobenzopyran-2-one
  参考文献：
  名称：

  通过分子碘催化苯酚与肉桂酸的[3 + 3]环偶联，无溶剂合成4-芳基-3,4-二氢苯并吡喃-2-酮

  摘要：

  分子碘被用作苯酚和肉桂酸的[3 + 3]环偶联反应的催化剂，该过程在无溶剂条件下通过串联酯化-氢芳基化过程在120-130°C下进行。以高收率获得了取代的4-芳基-3,4-二氢苯并吡喃-2-酮。

  DOI：

  10.1016/j.tetlet.2012.06.069

文献信息

• Molecular iodine catalyst promoted synthesis of chromans and 4-aryl-3,4-dihydrobenzopyran-2-ones via [3+3] cyclocoupling
  作者：Mayuri M. Naik、Durga P. Kamat、Santosh G. Tilve、Vijayendra P. Kamat

  DOI：10.1016/j.tet.2014.05.093

  日期：2014.8

  Molecular iodine as an inexpensive catalyst is described in the construction of 2-substituted or 2,2-disubstituted chromans and 4-aryl-3,4-dihydrobenzopyran-2-ones via [3+3] cyclocoupling. For the synthesis of chromans, phenols and allylic alcohols were refluxed in chloroform in presence of 20 mol % I-2 while [3+3] cyclocoupling of phenols and cinnamic acids proceeded to give 4-aryl-3,4-dihydrobenzopyran-2-ones using 30 mol % I-2. Later reaction occurs via a tandem hydroarylation-esterification process at 120-130 degrees C under solvent free conditions. Chromans were obtained in 20-92% yields and substituted 4-aryl-3,4-dihydrobenzopyran-2-ones were obtained in 5-85% yields. (C) 2014 Elsevier Ltd. All rights reserved.
• Solvent-free synthesis of 4-aryl-3,4-dihydrobenzopyran-2-ones via [3+3] cyclocoupling of phenols with cinnamic acid catalyzed by molecular iodine
  作者：Durga P. Kamat、Santosh G. Tilve、Vijayendra P. Kamat

  DOI：10.1016/j.tetlet.2012.06.069

  日期：2012.8

  Molecular iodine was used as a catalyst in the [3+3] cyclocoupling of phenols and cinnamic acids which proceeds via a tandem esterification–hydroarylation process at 120–130 °C under solvent-free conditions. Substituted 4-aryl-3,4-dihydrobenzopyran-2-ones were obtained in good yields.

  分子碘被用作苯酚和肉桂酸的[3 + 3]环偶联反应的催化剂，该过程在无溶剂条件下通过串联酯化-氢芳基化过程在120-130°C下进行。以高收率获得了取代的4-芳基-3,4-二氢苯并吡喃-2-酮。