(3R)-7-methoxy-3-methyl-3,4-dihydro-1H-quinoxalin-2-one | 1569310-80-0

• 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: (3R)-7-methoxy-3-methyl-3,4-dihydro-1H-quinoxalin-2-one
• CAS: 1569310-80-0
• 化学式: C₁₀H₁₂N₂O₂
• 分子量: 192.217
• InChiKey: HWPWOZSHXVATBJ-ZCFIWIBFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  50.4
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (3R)-7-methoxy-3-methyl-3,4-dihydro-1H-quinoxalin-2-one 在 硼烷四氢呋喃络合物 作用下， 以 四氢呋喃 为溶剂， 生成
  参考文献：
  名称：

  手性钌双环配合物催化喹喔啉，苯并恶嗪和苯并噻嗪的不对称加氢反应

  摘要：

  AbstractThe ruthenabicyclic complex RuCl[(R)‐daipena][(R)‐dm‐segphos] with potassium tert‐butoxide catalyzes the hydrogenation of 2‐alkylquinoxalines and a 3‐methyl‐2H‐1,4‐benzoxazine in toluene under 20–100 atm of hydrogen at 40 °C to afford S‐configured cyclic amino products in greater than 97% enantiomeric excess {DAIPENA=anion of DAIPEN at the 2‐position of an anisyl group, DAIPEN=1,1‐di(4‐anisyl)‐2‐isopropyl‐1,2‐ethylenediamine, DM‐SEGPHOS=(4,4′‐bi‐1,3‐benzodioxole)‐5,5′‐diylbis[di(3,5‐xylyl)phosphine]}. The high catalytic activity results in a turnover number as high as 9400. Hydrogenation of the benzoimine heterocycles with the RuCl[(R)‐daipena][(R)‐segphos]/potassium tert‐butoxide system yields the R‐configured products in high enantiomeric excess [SEGPHOS=(4,4′‐bi‐1,3‐benzodioxole)‐5,5′‐diylbis(diphenylphosphine)]. The mode of enantioselection is discussed based on transition state models involving six‐membered pericyclic structures.magnified image

  DOI：

  10.1002/adsc.201300604
• 作为产物：
  描述：

  methyl (2R)-2-(4-methoxy-2-nitroanilino)propanoate 在 palladium on activated charcoal 、 氢气 作用下， 以 乙醇 为溶剂， 生成 (3R)-7-methoxy-3-methyl-3,4-dihydro-1H-quinoxalin-2-one
  参考文献：
  名称：

  手性钌双环配合物催化喹喔啉，苯并恶嗪和苯并噻嗪的不对称加氢反应

  摘要：

  AbstractThe ruthenabicyclic complex RuCl[(R)‐daipena][(R)‐dm‐segphos] with potassium tert‐butoxide catalyzes the hydrogenation of 2‐alkylquinoxalines and a 3‐methyl‐2H‐1,4‐benzoxazine in toluene under 20–100 atm of hydrogen at 40 °C to afford S‐configured cyclic amino products in greater than 97% enantiomeric excess {DAIPENA=anion of DAIPEN at the 2‐position of an anisyl group, DAIPEN=1,1‐di(4‐anisyl)‐2‐isopropyl‐1,2‐ethylenediamine, DM‐SEGPHOS=(4,4′‐bi‐1,3‐benzodioxole)‐5,5′‐diylbis[di(3,5‐xylyl)phosphine]}. The high catalytic activity results in a turnover number as high as 9400. Hydrogenation of the benzoimine heterocycles with the RuCl[(R)‐daipena][(R)‐segphos]/potassium tert‐butoxide system yields the R‐configured products in high enantiomeric excess [SEGPHOS=(4,4′‐bi‐1,3‐benzodioxole)‐5,5′‐diylbis(diphenylphosphine)]. The mode of enantioselection is discussed based on transition state models involving six‐membered pericyclic structures.magnified image

  DOI：

  10.1002/adsc.201300604

文献信息

• Asymmetric Hydrogenation of Quinoxalines, Benzoxazines, and a Benzothiazine Catalyzed by Chiral Ruthenabicyclic Complexes
  作者：Noriyoshi Arai、Yu Saruwatari、Kotaro Isobe、Takeshi Ohkuma

  DOI：10.1002/adsc.201300604

  日期：2013.10.11

  AbstractThe ruthenabicyclic complex RuCl[(R)‐daipena][(R)‐dm‐segphos] with potassium tert‐butoxide catalyzes the hydrogenation of 2‐alkylquinoxalines and a 3‐methyl‐2H‐1,4‐benzoxazine in toluene under 20–100 atm of hydrogen at 40 °C to afford S‐configured cyclic amino products in greater than 97% enantiomeric excess DAIPENA=anion of DAIPEN at the 2‐position of an anisyl group, DAIPEN=1,1‐di(4‐anisyl)‐2‐isopropyl‐1,2‐ethylenediamine, DM‐SEGPHOS=(4,4′‐bi‐1,3‐benzodioxole)‐5,5′‐diylbis[di(3,5‐xylyl)phosphine]}. The high catalytic activity results in a turnover number as high as 9400. Hydrogenation of the benzoimine heterocycles with the RuCl[(R)‐daipena][(R)‐segphos]/potassium tert‐butoxide system yields the R‐configured products in high enantiomeric excess [SEGPHOS=(4,4′‐bi‐1,3‐benzodioxole)‐5,5′‐diylbis(diphenylphosphine)]. The mode of enantioselection is discussed based on transition state models involving six‐membered pericyclic structures.magnified image