4-(4-methoxyphenyl)-2-phenyl-3,6-dihydro-2H-pyran | 1367737-02-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 4-(4-methoxyphenyl)-2-phenyl-3,6-dihydro-2H-pyran
• 英文别名: 2-phenyl-4-(4-methoxyphenyl)-3,6-dihydro-2H-pyran
• CAS: 1367737-02-7
• 化学式: C₁₈H₁₈O₂
• 分子量: 266.34
• InChiKey: USAVXXDQEZDGFU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  20
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-(4-methoxyphenyl)-1,3-butadiene 、 苯甲醛 在 aluminum (III) chloride 作用下， 以 四氯化碳 为溶剂， 反应 15.0h， 以74%的产率得到4-(4-methoxyphenyl)-2-phenyl-3,6-dihydro-2H-pyran
  参考文献：
  名称：

  AlCl 3催化芳香醛与简单二烯的oxa-Diels-Alder反应

  摘要：

  已经开发了由AlCl 3催化的高度区域选择性和非对映选择性的oxa-Diels-Alder反应。该反应是有效的并且以良好的官能团相容性为特征，可以容忍F，Cl，CN，NO 2，OMe和硫代苯基。基于该结果，提出了路易斯酸催化的协同环加成机理。

  DOI：

  10.1016/j.tet.2016.10.049

文献信息

• Iron Corrole-catalyzed [4 + 2] Cycloaddition of Dienes and Aldehydes
  作者：Toru Kuwano、Takuya Kurahashi、Seijiro Matsubara

  DOI：10.1246/cl.130672

  日期：2013.10.5

  We have developed cationic iron(IV) corrole-catalyzed formal hetero-Diels–Alder reaction of aldehydes with dienes, which opens the way for divergent synthesis of pyrans. The potential utility of the catalyst was also demonstrated by carrying out cycloaddition of α,β-unsaturated aldehyde with a diene to give pyran selectively. Furthermore, the catalytic reactivity of iron corrole complex on the cycloaddition was determined by comparing that of iron porphyrin complex.

  我们开发了一种阳离子铁(IV) corrole 催化的醛与二烯的正式杂-Diels-Alder 反应，这为吡喃的多样性合成开辟了道路。催化剂的潜在应用价值也通过 α,β-不饱和醛与二烯的环加成反应得到选择性吡喃的生成得以证明。此外，通过比较铁 porphyrin 配合体在环加成反应中的催化活性，确定了铁 corrole 配合体的催化反应活性。
• Cationic Iron(III) Porphyrin-Catalyzed [4 + 2] Cycloaddition of Unactivated Aldehydes with Simple Dienes
  作者：Kyohei Fujiwara、Takuya Kurahashi、Seijiro Matsubara

  DOI：10.1021/ja300790x

  日期：2012.3.28

  Cationic iron(III) porphyrin was found to be an efficient catalyst for the highly chemoselective hetero-Diels Alder-type reaction of aldehydes with 1,3-dienes. The catalyzed process did not require the use of electron-deficient aldehydes such as glyoxylic acid derivatives or activated electron-rich 1,3-dienes such as Danishefslcy's diene and Rawal's diene. The high functional group tolerance and robustness of the catalyst were demonstrated. Further, the potential utility of the catalyst was demonstrated by performing the cycloaddition in the presence of water and by carrying out cycloaddition of an unactivated ketone such as cyclohexanone with a diene.