N-(E-2-methylbut-2-enoyl)dimethylacetamide | 613672-39-2

• 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: N-(E-2-methylbut-2-enoyl)dimethylacetamide
• 英文别名: (E)-2-methyl-N-(2-methylpropanoyl)but-2-enamide
• CAS: 613672-39-2
• 化学式: C₉H₁₅NO₂
• 分子量: 169.224
• InChiKey: VWVOWIRVIIAUOV-FNORWQNLSA-N

物化性质

• 熔点：
  108-109 °C
• 沸点：
  282.3±13.0 °C(Predicted)
• 密度：
  0.972±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  46.2
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N-(E-2-methylbut-2-enoyl)dimethylacetamide 在 palladium on activated charcoal chiral 2,2'-cC₃H₄-bis(3a,8a-dihydro-8H-indeno[1,2-d]oxazole) 、 氢气 、 magnesium triflimide 作用下， 以 1,4-二氧六环 、 二氯甲烷 、 水 为溶剂， 反应 16.0h， 生成 3-amino-2-ethyl butanoic acid
  参考文献：
  名称：

  Enantioselective Synthesis of α,β-Disubstituted-β-amino Acids

  摘要：

  Highly diastereoselective and enantioselective addition of N-benzylhydroxylamine to imides 17 and 20-30 produces alpha,beta-trans-disubstituted N-benzylisoxazolidinones 19 and 31-41. These reactions proceed in 60-96% ee with 93-99% de's using 5 mol % of Mg(NTf2)2 and ligand 18. The product isoxazolidinones can be hydrogenolyzed directly to provide alpha,beta-disubstituted-beta-amino acids.

  DOI：

  10.1021/ja0372309
• 作为产物：
  描述：

  惕格酸 在 草酰氯 、 sodium hydride 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 4.5h， 生成 N-(E-2-methylbut-2-enoyl)dimethylacetamide
  参考文献：
  名称：

  Enantioselective Synthesis of α,β-Disubstituted-β-amino Acids

  摘要：

  Highly diastereoselective and enantioselective addition of N-benzylhydroxylamine to imides 17 and 20-30 produces alpha,beta-trans-disubstituted N-benzylisoxazolidinones 19 and 31-41. These reactions proceed in 60-96% ee with 93-99% de's using 5 mol % of Mg(NTf2)2 and ligand 18. The product isoxazolidinones can be hydrogenolyzed directly to provide alpha,beta-disubstituted-beta-amino acids.

  DOI：

  10.1021/ja0372309

文献信息

• BETA-AMINO ACIDS AND METHODS AND INTERMEDIATES FOR MAKING SAME
  申请人：Sibi Mukund P.

  公开号：US20110218342A1

  公开（公告）日：2011-09-08

  Disclosed are β-amino acids that are unsubstituted in the β position; that are substituted in the β position with an aryl group; that are substituted in the α position with an aryl group; that bear two substituents in the α position; and/or that are substituted in the α and β positions with groups which, together with the carbon atoms at the α and β positions, form a ring. Also disclosed are methods for making the above-mentioned β-amino acids and other β-amino acids which involve providing an α,β-unsaturated imide; converting the α,β-unsaturated imide to a 2-substituted-isoxazolidin-5-one; and converting the 2-substituted-isoxazolidin-5-one to a β-amino acid.

  披露了未在β位取代的β-氨基酸；在β位用芳基取代的β-氨基酸；在α位用芳基取代的β-氨基酸；在α位带有两个取代基的β-氨基酸；和/或在α和β位用与α和β位的碳原子一起形成环的基团取代的β-氨基酸。还披露了制备上述β-氨基酸和其他β-氨基酸的方法，包括提供α，β-不饱和亚胺；将α，β-不饱和亚胺转化为2-取代异噁唑啉-5-酮；将2-取代异噁唑啉-5-酮转化为β-氨基酸。
• Enantioselective Cycloadditions with α,β-Disubstituted Acrylimides
  作者：Mukund P. Sibi、Zhihua Ma、Kennosuke Itoh、Prabagaran Narayanasamy、Craig P. Jasperse

  DOI：10.1021/ol050599d

  日期：2005.6.9

  The use of N-H imide templates provides a solution to the problem of rotamer control in Lewis acid catalyzed reactions of α,β-disubstituted acryloyl imides. Reactions proceed through the s-cis rotamer and with improved reactivity because A(1,3) strain is avoided. Enantioselective nitrone, nitrile oxide, and Diels-Alder cycloadditions demonstrate the principle.
• Enantioselective Radical Addition/Trapping Reactions with α,β-Disubstituted Unsaturated Imides. Synthesis of <i>a</i><i>nti</i>-Propionate Aldols
  作者：Mukund P. Sibi、Goran Petrovic、Jake Zimmerman

  DOI：10.1021/ja043371e

  日期：2005.3.1

  This manuscript describes a highly diastereo- and enantioselective intermolecular radical addition/hydrogen atom transfer to alpha,beta-disubstituted enoates. Additionally, we show that anti-propionate aldol-like products can be easily prepared from alpha-methyl-beta-acyloxyenoates in good yields and high diastereo- and enantioselectivities.
• Enantioselective Synthesis of α,β-Disubstituted-β-amino Acids
  作者：Mukund P. Sibi、Prabagaran Narayanasamy、Sandeep G. Ghorpade、Craig P. Jasperse

  DOI：10.1021/ja0372309

  日期：2003.10.1

  Highly diastereoselective and enantioselective addition of N-benzylhydroxylamine to imides 17 and 20-30 produces alpha,beta-trans-disubstituted N-benzylisoxazolidinones 19 and 31-41. These reactions proceed in 60-96% ee with 93-99% de's using 5 mol % of Mg(NTf2)2 and ligand 18. The product isoxazolidinones can be hydrogenolyzed directly to provide alpha,beta-disubstituted-beta-amino acids.