2,4-diamino-7-nitro-5-(4-methylphenylsulfanyl)-5H-chromeno[2,3-b]pyridine-3-carbonitrile | 1373941-23-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 2,4-diamino-7-nitro-5-(4-methylphenylsulfanyl)-5H-chromeno[2,3-b]pyridine-3-carbonitrile
• CAS: 1373941-23-1
• 化学式: C₂₀H₁₅N₅O₃S
• 分子量: 405.437
• InChiKey: ARARLRPVJKWNFL-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  5-硝基水杨醛 、 4-甲苯硫酚 、 丙二腈 在 potassium carbonate 作用下， 以 乙醇 、 水 为溶剂， 反应 3.0h， 以65%的产率得到2,4-diamino-7-nitro-5-(4-methylphenylsulfanyl)-5H-chromeno[2,3-b]pyridine-3-carbonitrile
  参考文献：
  名称：

  K₂CO₃-Mediated, One-Pot, Multicomponent Synthesis of Medicinally Potent Pyridine and Chromeno[2,3-b]pyridine Scaffolds

  摘要：

  An efficient one-pot, multicomponent synthesis of 3,5-dicyanopyridines has been developed from the reaction of malononitrile and different thiophenol or thiols with a variety of aldehydes (aromatic including hindered ones, heteroaromatic, and aliphatic) in the presence of 20 mol% of K2CO3 in refluxing 50% aqeuous ethanol. KMnO4 has been utilized as a readily available, inexpensive oxidant for the in situ transformation of the initially formed dihydropyridine intermediate. K2CO3 also mediates the one-pot formation of chromeno[2,3-b]pyridines from reaction of salicylaldehyde or its analogs with malononitrile and thiol or thiophenols. Both of these conditions also work equally well under 50-fold scale-up conditions.Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.

  DOI：

  10.1080/00397911.2011.555284