6-(4-hydroxyphenyl)-7-methyl-2,3-dihydro-1H-indolizin-5-one | 31493-36-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 6-(4-hydroxyphenyl)-7-methyl-2,3-dihydro-1H-indolizin-5-one
• 英文别名: 6-(4-Hydroxy-phenyl)-7-methyl-2,3-dihydro-1H-indolizin-5-on
• CAS: 31493-36-4
• 化学式: C₁₅H₁₅NO₂
• 分子量: 241.29
• InChiKey: JCIDHEIJMVEGOX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  40.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-(4-hydroxyphenyl)-7-methyl-2,3-dihydro-1H-indolizin-5-one 在 lithium aluminium tetrahydride 、 三氯化铝 作用下， 以84%的产率得到(+/-)-ipalbidine
  参考文献：
  名称：

  2-吡啶酮的新合成路线及其在合成（+/-）-Ipalbidine中的应用。

  摘要：

  DOI：

  10.1021/jo961690l
• 作为产物：
  描述：

  1-(2-benzenesulfonyl-2-diazoacetyl)pyrrolidin-2-one 在 rhodium(II) acetate dimer 、 四(三苯基膦)钯 、 乙醇 、 氢溴酸 、 镍 、 三乙胺 、 lithium chloride 作用下， 以 二氯甲烷 、 苯 为溶剂， 反应 31.0h， 生成 6-(4-hydroxyphenyl)-7-methyl-2,3-dihydro-1H-indolizin-5-one
  参考文献：
  名称：

  An Isomünchnone-Based Method for the Synthesis of Highly Substituted 2(1H)-Pyridones

  摘要：

  1-(Benzenesulfonyl-diazoacetyl)-pyrrolidin-2-one was prepared by a diazo transfer of 1-(benzenesulfonylacetyl)-pyrrolidin-2-one with p-acetamidobenzenesulfonyl azide and triethylamine. Treatment; of the diazoimide with a catalytic quantity of rhodium(II) acetate resulted in the formation of an isomunchnone dipole, which underwent bimolecular trapping with various dipolarophiles in high yield. The initially formed cycloadducts were not isolable or observed, as they all readily underwent ring opening to give the 3-hydroxy-2(1H)-pyridone ring system. The 3-hydroxy-2(1H)-pyridones were readily converted to the corresponding triflates, which function as suitable substrates in various types of palladium-catalyzed cross-coupling reactions. Commercial tetrakis(triphenylphoshine)palladium was found to be a particularly effective catalyst for the cross-coupling with aryl, vinyl, and acetylenic partners. An application of the method to the synthesis of the indolizidine alkaloid (+/-)-ipalbidine was carried out in eight steps in 17% overall yield. The angiotensin-converting enzyme inhibitor (-)-A58365A was also synthesized by a process based on the [3 + 2]-cycloaddition reaction of a phenylsulfonyl substituted isomunchnone intermediate. The starting material for this process was prepared from L-pyroglutamic acid and involved using a diazo phenylsulfonyl substituted pyrrolidine imide. Treatment of the diazoimide with Rh-2(OAc)(4) in the presence of methyl vinyl ketone afforded a 3-hydroxy-2-pyridone derivative, which was subsequently converted to the ACE inhibitor in six additional steps.

  DOI：

  10.1021/jo9911600