tert-Butyl 2-isocyano-4-methylpent-4-enoate | 166655-30-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: tert-Butyl 2-isocyano-4-methylpent-4-enoate
• CAS: 166655-30-7
• 化学式: C₁₁H₁₇NO₂
• 分子量: 195.261
• InChiKey: RDYSZUISHQYYJA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  14
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  30.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  tert-Butyl 2-isocyano-4-methylpent-4-enoate 在 偶氮二异丁腈 、 乙硫醇 作用下， 以 甲苯 为溶剂， 反应 2.5h， 以50%的产率得到3,4-Dihydro-4,4-dimethyl-5-(ethylthio)-2H-pyrrole-2-carboxylic acid tert-butyl ester
  参考文献：
  名称：

  Thiol Mediated Free Radical Cyclization of Alkenyl and Alkynyl Isocyanides

  摘要：

  Thiol-mediated free radical cyclizations of but-3-enyl and but-3-ynyl isocyanides of types 6-8 give new access to 3,5-disubstituted 2-(alkyl- and 2-(arylthio)pyrrolines 11, 12, and 18. When 2-mercaptoethanol is used with the same isocyanides the reaction results in pyroglutamates 16, 17, or 19. These cyclizations involve the formation of a new carbon-carbon bond through intramolecular addition of a carbon-centered thioimidoyl radical to a carbon-carbon multiple bond. Although cyclic products are usually obtained in high yields, in a few cases a competing radical degradation process leading to isothiocyanates was observed. Isocyanide 8a carrying an allyl(phenyl) sulfide moiety isomerizes to 2-(phenylthio)pyrroline 24 in a series of sequential steps.

  DOI：

  10.1021/jo00104a035
• 作为产物：
  描述：

  tert-butyl 2-[(diphenylmethylidene)amino]-4-methylpent-4-enoate 在 盐酸 、 三乙胺 、 三氯氧磷 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 2.5h， 生成 tert-Butyl 2-isocyano-4-methylpent-4-enoate
  参考文献：
  名称：

  Thiol Mediated Free Radical Cyclization of Alkenyl and Alkynyl Isocyanides

  摘要：

  Thiol-mediated free radical cyclizations of but-3-enyl and but-3-ynyl isocyanides of types 6-8 give new access to 3,5-disubstituted 2-(alkyl- and 2-(arylthio)pyrrolines 11, 12, and 18. When 2-mercaptoethanol is used with the same isocyanides the reaction results in pyroglutamates 16, 17, or 19. These cyclizations involve the formation of a new carbon-carbon bond through intramolecular addition of a carbon-centered thioimidoyl radical to a carbon-carbon multiple bond. Although cyclic products are usually obtained in high yields, in a few cases a competing radical degradation process leading to isothiocyanates was observed. Isocyanide 8a carrying an allyl(phenyl) sulfide moiety isomerizes to 2-(phenylthio)pyrroline 24 in a series of sequential steps.

  DOI：

  10.1021/jo00104a035