4-(2,3-二氢-2-氧代-1H-苯并咪唑-1-基)-3,6-二氢-2H-吡啶-1-羧酸乙酯 | 83763-15-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 中文名称: 4-(2,3-二氢-2-氧代-1H-苯并咪唑-1-基)-3,6-二氢-2H-吡啶-1-羧酸乙酯
• 英文名称: 4-(2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)-3,6-dihydro-2H-pyridine-1-carboxylic acid ethyl ester
• 英文别名: Ethyl 4-(2,3-dihydro-2-oxo-1H-benzimidazol-1-yl)-3,6-dihydro-1(2H)-pyridinecarboxylate；ethyl 4-(2-oxo-3H-benzimidazol-1-yl)-3,6-dihydro-2H-pyridine-1-carboxylate
• CAS: 83763-15-9
• 化学式: C₁₅H₁₇N₃O₃
• 分子量: 287.318
• InChiKey: ZDMLTXBNJOAXBY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  61.9
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  1,3-dihydrospiro[2H-benzimidazole-2,4'-piperidine]-1'-carboxylic acid ethyl ester 、 三光气 在 potassium carbonate 作用下， 以 四氢呋喃 为溶剂， 以80%的产率得到4-(2,3-二氢-2-氧代-1H-苯并咪唑-1-基)-3,6-二氢-2H-吡啶-1-羧酸乙酯
  参考文献：
  名称：

  Rearrangement of spiro-benzimidazolines: preparation of N-alkenyl- and N-alkyl-benzimidazol-2-ones

  摘要：

  A synthetically useful protocol has been developed for the preparation of highly functionalized N-alkenyl-benzimidazol-2-ones. Reaction of commercially available o-phenylenediamines with variously substituted cyclic ketones provides spiro-benzimidazolines. Treatment of these spiro-benzimidazolines with triphosgene in the presence of potassium carbonate results in rapid rearrangement and formation of N-alkenyl-benzimidazol-2-ones in modest to excellent yield for the two-step sequence. Extension of this methodology toward the preparation of a m opiate receptor antagonist and droperidol, a potent antiemetic and antipsychotic agent, currently a marketed pharmaceutical is also described. Upon treatment of spiro-benzimidazolines with triphosgene in the presence of sodium triacetoxyborohydride, N-alkyl-benzimidazol-2-ones were formed. (C) 2007 Merck & Co., Inc. Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2007.06.106