2-Methyl-2-propenyl-3-oxobutanoate | 107760-37-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: 2-Methyl-2-propenyl-3-oxobutanoate
• 英文别名: 2-Methylprop-1-enyl 3-oxobutanoate
• CAS: 107760-37-2
• 化学式: C₈H₁₂O₃
• 分子量: 156.181
• InChiKey: CJAAQYWVYRUICX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 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：

  2-Methyl-2-propenyl-3-oxobutanoate 在 二甲基硫 、 臭氧 、 三乙胺 、 甲烷磺酰基叠氮化物 作用下， 以 乙腈 为溶剂， 反应 3.0h， 生成 2-Oxopropyl 2-diazo-3-oxobutanoate
  参考文献：
  名称：

  Stereo and electronic effects in the rhodium(II)-mediated synthesis of polycyclic lactones and lactams from .alpha.-diazo ester and amide precursors

  摘要：

  The rhodium(II) carboxylate catalyzed decomposition of several alpha-diazo esters and amides has been studied. A series of 5-keto-1-diazo acetates were prepared by acylation of alpha-hydroxy ketones using the (p-toluenesulfonyl)hydrazone of glyoxylic acid chloride. Treatment of these compounds with Rh(II) acetate afforded products derived from carbenoid insertion into solvent. When the hydrogen atom of the diazo carbon was replaced with an electron-withdrawing substituent, smooth cyclization occurred to produce a carbonyl ylide dipole which was subsequently trapped with different dipolarophiles. A series of N-alkyl-2-diazo-3-oxobutylamides, when treated with a catalytic quantity of rhodium(II) acetate, gave furo[3,4-c]furans in good yield. The reaction proceeds via addition of a rhodium-stabilized carbenoid onto the acetylenic pi-bond to give a vinyl carbenoid which subsequently cyclizes onto the neighboring carbonyl group to produce the furan ring. N-Alkynyl-substituted 2-diazoacetamides were also found to cyclize onto the tethered alkyne unit. The resulting rhodium carbenoid can undergo intramolecular and bimolecular cyclopropanation depending on both electronic and conformational factors. Rotamer population of the starting diazoamide was also found to influence product distribution.

  DOI：

  10.1021/jo00069a030
• 作为产物：
  描述：

  dimethylethenylcarbinol acetoacetate 、 白碳黑 以70%的产率得到
  参考文献：
  名称：

  POGREBNOI, S. I.;KALYAN, Y. B.;KRIMER, M. Z.;SMIT, W. A., TETRAHEDRON LETT., 28,(1987) N 41, 4893-4896

  摘要：

  DOI：