ethyl 2-diazo-3-(3-ethylamino-5-phenylthiophen-2-yl)-3-oxopropanoate | 418753-56-7

• 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: ethyl 2-diazo-3-(3-ethylamino-5-phenylthiophen-2-yl)-3-oxopropanoate
• 英文别名: Ethyl 2-diazo-3-[3-(ethylamino)-5-phenylthiophen-2-yl]-3-oxopropanoate
• CAS: 418753-56-7
• 化学式: C₁₇H₁₇N₃O₃S
• 分子量: 343.406
• InChiKey: MGTOUBALZKDFPR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  24
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  85.6
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  ethyl 2-diazo-3-(3-ethylamino-5-phenylthiophen-2-yl)-3-oxopropanoate 在 三氟甲磺酸三甲基硅酯 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以63%的产率得到6-diazo-4-ethyl-2-phenyl-4H-thieno[3,2-b]pyridine-5,7-dione
  参考文献：
  名称：

  Facile Synthesis of 4-Alkyl (and Aryl)-2-aryl-6-diazo-4H- thieno[3,2-b]pyridine-5,7-diones

  摘要：

  Treatment of 3-{3-alkyl (and aryl)amino-5-arylthieno-2-yl}-2-diazo-3-oxopropanoates 8 with TMSOTf (3 equiv) in the presence of Et3N (6 equiv) in CH2Cl2 for 1 h at room temperature afforded 4-alkyl (and aryl)-2-aryl-6-diazo-4H-thieno[3,2-b]pyridine-5,7-diones 14 in excellent yields. On heating of 14 in the presence of a catalytic amount of Rh-2(CF3CF2CF2CO2)(4) in PhH for 4-10 h at reflux, corresponding ring contraction products, 4-alkyl (and aryl)-5,6-dihydro-4H-thieno[3,2-b]pyrrol-5-ones 16, were produced in good to excellent yields.

  DOI：

  10.1021/jo049769a
• 作为产物：
  描述：

  3,3-双甲基磺酰基-1-苯丙酮 在 劳森试剂 、 mercury(II) diacetate 作用下， 以 乙醇 、 二氯甲烷 、 苯 为溶剂， 反应 4.5h， 生成 ethyl 2-diazo-3-(3-ethylamino-5-phenylthiophen-2-yl)-3-oxopropanoate
  参考文献：
  名称：

  Facile Synthesis of 4-Alkyl (and Aryl)-2-aryl-6-diazo-4H- thieno[3,2-b]pyridine-5,7-diones

  摘要：

  Treatment of 3-{3-alkyl (and aryl)amino-5-arylthieno-2-yl}-2-diazo-3-oxopropanoates 8 with TMSOTf (3 equiv) in the presence of Et3N (6 equiv) in CH2Cl2 for 1 h at room temperature afforded 4-alkyl (and aryl)-2-aryl-6-diazo-4H-thieno[3,2-b]pyridine-5,7-diones 14 in excellent yields. On heating of 14 in the presence of a catalytic amount of Rh-2(CF3CF2CF2CO2)(4) in PhH for 4-10 h at reflux, corresponding ring contraction products, 4-alkyl (and aryl)-5,6-dihydro-4H-thieno[3,2-b]pyrrol-5-ones 16, were produced in good to excellent yields.

  DOI：

  10.1021/jo049769a

文献信息

• Novel Synthesis of 5,6-Dihydro-4<i>H</i>-thieno[3,2-<i>b</i>]pyrrol-5-ones via the Rhodium(II)-Mediated Wolff Rearrangement of 3-(Thieno-2-yl)-3-oxo-2-diazopropanoates
  作者：Dong Joon Lee、Kyongtae Kim、Yung Ja Park

  DOI：10.1021/ol016995n

  日期：2002.3.1

  [GRAPHICS]Treatment of thioaryolketene S,N-acetals 12 with Hg(OAc)(2) followed by addition of 2-diazo-3-trimethylsilyloxy-3-butenoic acid alkyl esters 15 in CH2Cl2 at room temperature gave 3-(3-alkylamino-5-arylthieno-2-yl)-3-oxo-2-diazopropanoates 16 in good yields. Subsequent reactions of 16 with a catalytic amount of Rh-2(OAc)(4).2H(2)O in benzene at reflux afforded a mixture of 5,6-dihydro-4H-thieno[3,2-b]pyrrol-5-ones 18 and the corresponding enols 19 in excellent yields.