Dimethyl (2R,2'R,4S,4'S)-2,2'-dimethyl-4,4'-diphenyl-2,2'-azopentanoate | 132539-80-1

• 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: Dimethyl (2R,2'R,4S,4'S)-2,2'-dimethyl-4,4'-diphenyl-2,2'-azopentanoate
• 英文别名: methyl (2R,4S)-2-[[(2R,4S)-1-methoxy-2-methyl-1-oxo-4-phenylpentan-2-yl]diazenyl]-2-methyl-4-phenylpentanoate
• CAS: 132539-80-1；132618-43-0；132618-44-1；132618-45-2；132618-46-3；132618-47-4
• 化学式: C₂₆H₃₄N₂O₄
• 分子量: 438.567
• InChiKey: MBVLSAFWHHWDBV-JZKJUIAGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.69
• 重原子数：
  32.0
• 可旋转键数：
  10.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  77.32
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为产物：
  描述：

  (S)-4-phenylpentan-2-one 在 盐酸 、 ammonium hydroxide 、 氯化亚砜 、 磺酰氯 、 次氯酸叔丁酯 、 sodium methylate 作用下， 以 甲醇 、 正戊烷 为溶剂， 反应 63.75h， 生成 Dimethyl (2R,2'R,4S,4'S)-2,2'-dimethyl-4,4'-diphenyl-2,2'-azopentanoate
  参考文献：
  名称：

  Synthesis of precursors to model styrene/methyl methacrylate copolymer radicals. .alpha.,.alpha.'-Bis(methoxycarbonyl)azoalkanes

  摘要：

  Several symmetrical alpha,alpha'-bis(methoxycarbonyl)azoalkanes 4 were prepared in high yield in two steps from the appropriate alpha-amino esters 13, or in five steps from 4-substituted 4-phenyl-2-butanones 10. The sequence involves the generation, separation, and purification of symmetrical N,N'-disubstituted sulfamides 14 followed by oxidative rearrangement under modified Ohme-Schmitz-Preuschhof conditions to yield the title compounds. In the absence of the oxidant, the sulfamides are converted quantitatively into 2,4-disubstituted 3-oxo-1,2,5-thiadiazolidine 1,1-dioxides 15. In accord with the above methodology, (4S)-4-phenyl-2-pentanone was transformed into (2R,2'R,4S,4'S)-2,2'-bis(methoxycarbonyl)-4,4'-diphenyl-2,2'-azopentane (4b-Ia), the stereochemistry of which was established from that of its precursor (2R,2'R,4S,4'S)-N,N'-bis[2-[2-(methoxycarbonyl)-4-phenylpentyl]]-sulfamide by single-crystal X-ray analysis.

  DOI：

  10.1021/jo00006a014