1,3-dihydrospiro[2H-benzimidazole-2,4'-piperidine]-1'-carboxylic acid tert-butyl ester | 959700-72-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 1,3-dihydrospiro[2H-benzimidazole-2,4'-piperidine]-1'-carboxylic acid tert-butyl ester
• 英文别名: 1'-(tert-Butyloxycarbonyl)spiro[1H-benzoimidazole-2(3H),4'-piperidine]；tert-butyl spiro[1,3-dihydrobenzimidazole-2,4'-piperidine]-1'-carboxylate
• CAS: 959700-72-2
• 化学式: C₁₆H₂₃N₃O₂
• mdl: MFCD30720568
• 分子量: 289.378
• InChiKey: UDOSVDKEIYKZDL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  21
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  53.6
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  1,3-dihydrospiro[2H-benzimidazole-2,4'-piperidine]-1'-carboxylic acid tert-butyl ester 、 三光气 在 potassium carbonate 作用下， 以 四氢呋喃 为溶剂， 以85%的产率得到4-(2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester
  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
• 作为产物：
  描述：

  N-叔丁氧羰基-4-哌啶酮 、 邻苯二胺 以 醋酸异丙酯 为溶剂， 反应 2.0h， 以75%的产率得到1,3-dihydrospiro[2H-benzimidazole-2,4'-piperidine]-1'-carboxylic acid tert-butyl ester
  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

文献信息

• Rearrangement of spiro-benzimidazolines: preparation of N-alkenyl- and N-alkyl-benzimidazol-2-ones
  作者：Jeffrey T. Kuethe、Jack Varon、Karla G. Childers

  DOI：10.1016/j.tet.2007.06.106

  日期：2007.11

  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.