3-Carbomethoxybut-3-enal | 144800-76-0

• 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: 3-Carbomethoxybut-3-enal
• 英文别名: Methyl 2-methylidene-4-oxobutanoate
• CAS: 144800-76-0
• 化学式: C₆H₈O₃
• 分子量: 128.128
• InChiKey: AZRNFNDYLYCXFU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.1
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-Carbomethoxybut-3-enal 在 盐酸羟胺 、 sodium acetate 作用下， 以 水 、 乙腈 为溶剂， 生成 Butanoic acid, 4-(hydroxyimino)-2-methylene-, methyl ester, (Z)- 、 Butanoic acid, 4-(hydroxyimino)-2-methylene-, methyl ester, (E)-
  参考文献：
  名称：

  X = Y - ZH systems as potential 1,3-dipoles part 35. Generation of nitrones from oximes. Class 3 processes. Tandem intramolecular michael addition (1,3-azaprotio cyclotransfer) - intermolecular 1,3-dipolar cycloaddition reactions.

  摘要：

  Aldoximes and ketoximes possessing gamma- or delta-alkenyl substituents undergo thermal conversion to 5- and 6- membered cyclic nitrones via a 1,3-azaprotio cyclotransfer, a 2n + 2-sigma + 2-pi concerted process, rather than a Michael addition. The reactions can be performed as a tandem nitrone formation-cycloaddition sequence or, if required, the intermediate nitrones can be isolated. The cycloadditions usually proceed via an exo-transition state and show both regio- and diastereofacial-specificity. Preliminary attempts at chiral induction via a menthyl auxiliary are reported.

  DOI：

  10.1016/s0040-4020(01)89883-5
• 作为产物：
  描述：

  methyl 4-hydroxy-2-methylenebutanoate 在 pyridinium chlorochromate 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以55%的产率得到3-Carbomethoxybut-3-enal
  参考文献：
  名称：

  X = Y - ZH systems as potential 1,3-dipoles part 35. Generation of nitrones from oximes. Class 3 processes. Tandem intramolecular michael addition (1,3-azaprotio cyclotransfer) - intermolecular 1,3-dipolar cycloaddition reactions.

  摘要：

  Aldoximes and ketoximes possessing gamma- or delta-alkenyl substituents undergo thermal conversion to 5- and 6- membered cyclic nitrones via a 1,3-azaprotio cyclotransfer, a 2n + 2-sigma + 2-pi concerted process, rather than a Michael addition. The reactions can be performed as a tandem nitrone formation-cycloaddition sequence or, if required, the intermediate nitrones can be isolated. The cycloadditions usually proceed via an exo-transition state and show both regio- and diastereofacial-specificity. Preliminary attempts at chiral induction via a menthyl auxiliary are reported.

  DOI：

  10.1016/s0040-4020(01)89883-5

文献信息

• US4383078A
  申请人：——

  公开号：US4383078A

  公开（公告）日：1983-05-10
• US4791221A
  申请人：——

  公开号：US4791221A

  公开（公告）日：1988-12-13
• X = Y - ZH systems as potential 1,3-dipoles part 35. Generation of nitrones from oximes. Class 3 processes. Tandem intramolecular michael addition (1,3-azaprotio cyclotransfer) - intermolecular 1,3-dipolar cycloaddition reactions.
  作者：Ronald Grigg、Jasothara Markandu、Trevor Perrior、Sivagnanasundram Surendrakumar、William J. Warnock

  DOI：10.1016/s0040-4020(01)89883-5

  日期：1992.1

  Aldoximes and ketoximes possessing gamma- or delta-alkenyl substituents undergo thermal conversion to 5- and 6- membered cyclic nitrones via a 1,3-azaprotio cyclotransfer, a 2n + 2-sigma + 2-pi concerted process, rather than a Michael addition. The reactions can be performed as a tandem nitrone formation-cycloaddition sequence or, if required, the intermediate nitrones can be isolated. The cycloadditions usually proceed via an exo-transition state and show both regio- and diastereofacial-specificity. Preliminary attempts at chiral induction via a menthyl auxiliary are reported.