Methyl (5S)-N-(methacryloyl)-2-pyrrolidone-5-carboxylate

• 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: Methyl (5S)-N-(methacryloyl)-2-pyrrolidone-5-carboxylate
• 英文别名: methyl (2S)-1-(2-methylprop-2-enoyl)-5-oxopyrrolidine-2-carboxylate
• 化学式: C₁₀H₁₃NO₄
• 分子量: 211.218
• InChiKey: YITWIVBRIDGVII-ZETCQYMHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  63.7
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  L-焦谷氨酸甲酯 、 甲基丙烯酰氯 在 sodium hydride 作用下， 以 四氢呋喃 为溶剂， 以75%的产率得到Methyl (5S)-N-(methacryloyl)-2-pyrrolidone-5-carboxylate
  参考文献：
  名称：

  Palladium(II)-catalyzed asymmetric acetalization of alkenes

  摘要：

  The terminal olefinic carbon of N-methacryloyl-2-oxazolidinones is smoothly acetalized by alcohols in the presence of PdCl2 catalyst. The use of 4(S)-isopropyl-, phenyl-, and tert-butyl-2-oxazolidinones as the chiral auxiliary resulted in the formation of the corresponding (2'S)-acetals in 61, 80, and 95% de, respectively. Reductive removal of the auxiliary with LiAlH4 followed by deacetalization produced (R)-3-hydroxy-2-methylpropanal. The enantiomer of this compound, derived from 4(R)substituted oxazolidinones, served as a building block for synthesizing a 1 beta-methylcarbapenem precursor in high enantiomeric excess. In the acetalization of 3',3'-dideuteriated methacryloyl-4-isopropyloxaiolidinone with MeOH, one D-atom on the terminal olefinic carbon stereoselectively migrated to the chiral center in the product acetal. On the basis of this 1,2-hydride migration and the conformational preference of the methacryloyl moiety, the reaction pathway and the mechanism of the diastereoselection are discussed.

  DOI：

  10.1021/jo00124a032

文献信息

• Palladium(II)-catalyzed asymmetric acetalization of alkenes
  作者：Takahiro Hosokawa、Toshio Yamanaka、Motohiro Itotani、Shun-Ichi Murahashi

  DOI：10.1021/jo00124a032

  日期：1995.9

  The terminal olefinic carbon of N-methacryloyl-2-oxazolidinones is smoothly acetalized by alcohols in the presence of PdCl2 catalyst. The use of 4(S)-isopropyl-, phenyl-, and tert-butyl-2-oxazolidinones as the chiral auxiliary resulted in the formation of the corresponding (2'S)-acetals in 61, 80, and 95% de, respectively. Reductive removal of the auxiliary with LiAlH4 followed by deacetalization produced (R)-3-hydroxy-2-methylpropanal. The enantiomer of this compound, derived from 4(R)substituted oxazolidinones, served as a building block for synthesizing a 1 beta-methylcarbapenem precursor in high enantiomeric excess. In the acetalization of 3',3'-dideuteriated methacryloyl-4-isopropyloxaiolidinone with MeOH, one D-atom on the terminal olefinic carbon stereoselectively migrated to the chiral center in the product acetal. On the basis of this 1,2-hydride migration and the conformational preference of the methacryloyl moiety, the reaction pathway and the mechanism of the diastereoselection are discussed.