Methyl 5-(1-ethylpropyl)-1-phenylimidazole-4-carboxylate

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: Methyl 5-(1-ethylpropyl)-1-phenylimidazole-4-carboxylate
• 英文别名: Methyl 5-pentan-3-yl-1-phenylimidazole-4-carboxylate
• 化学式: C₁₆H₂₀N₂O₂
• 分子量: 272.347
• InChiKey: HUCINGTUKCWMSZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  20
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  44.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  methyl 3-bromo-4-ethyl-2-formamidohex-2-enoate 在 三乙胺 、 三氯氧磷 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 50.0h， 生成 Methyl 5-(1-ethylpropyl)-1-phenylimidazole-4-carboxylate
  参考文献：
  名称：

  A Novel Synthesis of Methyl 1,5-Disubstituted Imidazole-4-carboxylates Using 3-Bromo-2-isocyanoacrylates (BICA)

  摘要：

  Methyl 1,5-disubstituted imidazole-4-carboxylates 1 were synthesised using methyl 3-substituted 3-bromo-2-isocyanoacrylates 3 (BICA), and the reaction mechanism was elucidated. Reactions of 3, which were prepared by bromination of 3-substituted 2-(formylamino)acrylates 6 followed by dehydration of the formylamino group, with a variety of primary amines gave imidazoles 1 in good overall yields. A mechanistic study suggested a Michael reaction of an amine with 3 followed by p-elimination of hydrogen bromide exclusively afforded (E)-N,3-disubstituted 3-amino-2-isocyanoacrylates 2. Geometric isomerization to (Z)-2 with a base and subsequent cyclization gave imidazoles 1.

  DOI：

  10.1021/jo00104a018