6-ethoxypteridin-4(3H)-one | 1192150-16-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 蝶啶及其衍生物
• 英文名称: 6-ethoxypteridin-4(3H)-one
• 英文别名: 6-Ethoxypteridin-4(3H)-one；6-ethoxy-3H-pteridin-4-one
• CAS: 1192150-16-5
• 化学式: C₈H₈N₄O₂
• 分子量: 192.177
• InChiKey: DJPBBZAAKRTUER-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.1
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  76.5
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  6-ethoxypteridin-4(3H)-one 在 氯化亚砜 、 三乙胺 、 N,N-二甲基甲酰胺 作用下， 以 异丙醇 为溶剂， 反应 13.0h， 生成 N-(3-chlorophenyl)-6-ethoxypteridin-4-amine
  参考文献：
  名称：

  Synthesis ofN-Substituted-6-alkoxypteridin-4-amine

  摘要：

  A novel seven‐step methodology for the synthesis of N‐substituted‐6‐alkoxypteridin‐4‐amine has been developed with the total yields of 35.4–41%. Twenty new compounds were synthesized by heterocyclization of easily prepared 3‐amino‐6‐bromopyrazine‐2‐carboxamide, subsequent alkoxylation, chlorination, and nucleophilic substitution. Their structures were confirmed by 1H‐NMR, 13C‐NMR, ESI‐MS, and elemental analysis. The structure of N‐(3‐chloro‐4‐fluorophenyl)‐6‐ethoxypteridin‐4‐amine was further determined by X‐ray crystallographic analysis. It was found that different chlorinating reagents gave different products. The possible chlorination mechanism was discussed.

  DOI：

  10.1002/jhet.883
• 作为产物：
  描述：

  3-氨基-6-溴吡嗪-2-甲酰胺 在 sodium 、 乙酸酐 作用下， 反应 9.0h， 生成 6-ethoxypteridin-4(3H)-one
  参考文献：
  名称：

  Synthesis ofN-Substituted-6-alkoxypteridin-4-amine

  摘要：

  A novel seven‐step methodology for the synthesis of N‐substituted‐6‐alkoxypteridin‐4‐amine has been developed with the total yields of 35.4–41%. Twenty new compounds were synthesized by heterocyclization of easily prepared 3‐amino‐6‐bromopyrazine‐2‐carboxamide, subsequent alkoxylation, chlorination, and nucleophilic substitution. Their structures were confirmed by 1H‐NMR, 13C‐NMR, ESI‐MS, and elemental analysis. The structure of N‐(3‐chloro‐4‐fluorophenyl)‐6‐ethoxypteridin‐4‐amine was further determined by X‐ray crystallographic analysis. It was found that different chlorinating reagents gave different products. The possible chlorination mechanism was discussed.

  DOI：

  10.1002/jhet.883

文献信息

• Electro-oxidative cyclization: access to quinazolinones <i>via</i> K₂S₂O₈ without transition metal catalyst and base
  作者：Yongzhi Hu、Huiqing Hou、Ling Yu、Sunying Zhou、Xianghua Wu、Weiming Sun、Fang Ke

  DOI：10.1039/d1ra05092c

  日期：——

  A K2S2O8-promoted oxidative tandem cyclization of primary alcohols with 2-aminobenzamides to synthesize quinazolinones was successfully achieved under undivided electrolytic conditions without a transition metal and base. The key feature of this protocol is the utilization of K2S2O8 as an inexpensive and easy-to-handle radical surrogate that can effectively promote the reaction via a simple procedure

  AK 2 S 2 O 8促进了伯醇与2-氨基苯甲酰胺的氧化串联环化以合成喹唑啉酮，在没有过渡金属和碱的不分电解条件下成功实现。该协议的主要特点是利用 K 2 S 2 O 8作为一种廉价且易于处理的自由基替代物，可以通过简单的程序有效地促进反应，从而通过形成氮杂环在恒定电流下以一锅法在室温下直接氧化环化。由于使用了连续流动的电化学装置，这种绿色、温和、实用的电合成具有高效率和优异的官能团耐受性，并且易于放大。