tert-butyl (2RS,E)-1-tert-butoxycarbonyl-3-(ethylthiocarbonyl-methylidene)-azetidine-2-carboxylate | 144572-40-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: tert-butyl (2RS,E)-1-tert-butoxycarbonyl-3-(ethylthiocarbonyl-methylidene)-azetidine-2-carboxylate
• 英文别名: Di(tert-butyl) 3-(2-(ethylthio)-2-oxoethylidene)-1,2-azetidinedicarboxylate；ditert-butyl (3E)-3-(2-ethylsulfanyl-2-oxoethylidene)azetidine-1,2-dicarboxylate
• CAS: 144572-40-7
• 化学式: C₁₇H₂₇NO₅S
• 分子量: 357.471
• InChiKey: MWJGINGFPOXZFR-PKNBQFBNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  24
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  98.2
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  S-ethyl 2-(triphenylphosphoranylidene)ethanethioate 、 以 二氯甲烷 为溶剂， 生成 tert-butyl (2RS,E)-1-tert-butoxycarbonyl-3-(ethylthiocarbonyl-methylidene)-azetidine-2-carboxylate
  参考文献：
  名称：

  Synthesis of (2RS,E)-3-Ethylidene-azetidine-2-carboxylic acid (rac. polyoximic acid)

  摘要：

  Treatment of alpha-diazo beta-ketoester 4 with a catalytic amount of rhodium (II) acetate followed by Wittig reaction with phosphorane 5 gave the isomeric phenylthioester derivative 6a and 6b. Reduction of 6a led to the corresponding allylic alcohol 7, which was further converted into the bromide 8. Dehalogenation of 8 with NaBH4/DMF resulted in compound 9, which was deprotected with trifluoroacetic acid, giving racemic polyoximic acid (1).

  DOI：

  10.1016/s0040-4020(01)88257-0