Ethyl o-Nitrophenyl Oxalate | 17318-84-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Ethyl o-Nitrophenyl Oxalate
• 英文别名: ethyl 2-nitrophenyl oxalate；Oxalsaeure-ethylester-o-nitrophenylester；Ethyl-o-nitrophenyl-oxalat；Ethanedioic acid, ethyl 2-nitrophenyl ester；1-O-ethyl 2-O-(2-nitrophenyl) oxalate
• CAS: 17318-84-2
• 化学式: C₁₀H₉NO₆
• 分子量: 239.185
• InChiKey: SCOKXZYNQKAQLK-UHFFFAOYSA-N

物化性质

• 沸点：
  342.5±34.0 °C(Predicted)
• 密度：
  1.363±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  17
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  98.4
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  Ethyl o-Nitrophenyl Oxalate 在 Pt(S)/C 甲醇 、 氢气 作用下， 以86%的产率得到(2-hydroxy)-ethyloxanilate
  参考文献：
  名称：

  Syntheses of Cyclic Hydroxamic Acids and Lactams with 2,3-dioxo-1,4-benzoxazine skeleton

  摘要：

  Ethyl 2-nitrophenyl oxalate (1 a) and its 5-methoxy derivative (1 b) were subjected to catalytic hydrogenations over 3 % Pt (S) on carbon in different solvents. Thus, hydrogenation in acetic acid yielded 4-hydroxy-2,3-dioxo-1,4-benzoxazine (2a) and its 7-methoxy derivative (2 b) by reductive cyclization, the dehydro forms of the naturally occurring cyclic hydroxamic acids DIBOA and DIMBOA from Gramineae. In contrast, hydrogenation of esters 1 in methanol results in the formation of amides 3 by acyl group migration. On heating, amides 3 undergo lactonization to form lactone-lactames 4, which in turn undergo ring opening to give amides 3 when refluxed in ethanol.

  DOI：

  10.1002/prac.19933350409
• 作为产物：
  描述：

  potassium 2-nitrophenoxide 、 草酰氯单乙酯 以 甲苯 为溶剂， 反应 1.0h， 以85%的产率得到Ethyl o-Nitrophenyl Oxalate
  参考文献：
  名称：

  Syntheses of Cyclic Hydroxamic Acids and Lactams with 2,3-dioxo-1,4-benzoxazine skeleton

  摘要：

  Ethyl 2-nitrophenyl oxalate (1 a) and its 5-methoxy derivative (1 b) were subjected to catalytic hydrogenations over 3 % Pt (S) on carbon in different solvents. Thus, hydrogenation in acetic acid yielded 4-hydroxy-2,3-dioxo-1,4-benzoxazine (2a) and its 7-methoxy derivative (2 b) by reductive cyclization, the dehydro forms of the naturally occurring cyclic hydroxamic acids DIBOA and DIMBOA from Gramineae. In contrast, hydrogenation of esters 1 in methanol results in the formation of amides 3 by acyl group migration. On heating, amides 3 undergo lactonization to form lactone-lactames 4, which in turn undergo ring opening to give amides 3 when refluxed in ethanol.

  DOI：

  10.1002/prac.19933350409

文献信息

• Syntheses of Cyclic Hydroxamic Acids and Lactams with 2,3-dioxo-1,4-benzoxazine skeleton
  作者：H. Hartenstein、D. Sicker

  DOI：10.1002/prac.19933350409

  日期：——

  Ethyl 2-nitrophenyl oxalate (1 a) and its 5-methoxy derivative (1 b) were subjected to catalytic hydrogenations over 3 % Pt (S) on carbon in different solvents. Thus, hydrogenation in acetic acid yielded 4-hydroxy-2,3-dioxo-1,4-benzoxazine (2a) and its 7-methoxy derivative (2 b) by reductive cyclization, the dehydro forms of the naturally occurring cyclic hydroxamic acids DIBOA and DIMBOA from Gramineae. In contrast, hydrogenation of esters 1 in methanol results in the formation of amides 3 by acyl group migration. On heating, amides 3 undergo lactonization to form lactone-lactames 4, which in turn undergo ring opening to give amides 3 when refluxed in ethanol.