ethyl 4-(3-chloropropyl)-5-nitroisoxazole-3-carboxylate | 1629161-70-1

• 分子结构分类: 有机化合物 - 有机1,3-偶极化合物 - 烯丙基型1,3-偶极有机化合物
• 英文名称: ethyl 4-(3-chloropropyl)-5-nitroisoxazole-3-carboxylate
• CAS: 1629161-70-1
• 化学式: C₉H₁₁ClN₂O₅
• 分子量: 262.65
• InChiKey: KDBLUAFLXPQSQD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.93
• 重原子数：
  17.0
• 可旋转键数：
  6.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  95.47
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  ethyl 4-(3-chloropropyl)-5-nitroisoxazole-3-carboxylate 在 tin(ll) chloride 作用下， 以 乙醇 为溶剂， 反应 3.0h， 以65%的产率得到ethyl 5-amino-4-(3-chloropropyl)isoxazole-3-carboxylate
  参考文献：
  名称：

  Chemoselective Reduction of Functionalized 5-Nitroisoxazoles: Synthesis of 5-Amino- and 5-[Hydroxy(tetrahydrofuran-2-yl)amino]isoxazoles

  摘要：

  Reduction by using SnCl2 of easily accessible 5-nitroisoxazoles substituted with an electron-withdrawing group (EWG) has been studied. Whereas the reaction in ethanol yielded 5-aminoisoxazoles, performing the reaction in tetrahydrofuran gave previously unknown 5-[hydroxy(tetrahydrofuran-2-yl)amino]isoxazoles. Both reduction procedures were optimized to afford the corresponding products in good to excellent yields. Some mechanistic details concerning the inclusion of the tetrahydrofuranyl moiety into the reaction product are discussed

  DOI：

  10.1055/s-0033-1340827
• 作为产物：
  描述：

  四硝基甲烷 、 ethyl 6-chlorohex-2-enoate 在 三乙胺 作用下， 以 1,4-二氧六环 为溶剂， 生成 ethyl 4-(3-chloropropyl)-5-nitroisoxazole-3-carboxylate
  参考文献：
  名称：

  Chemoselective Reduction of Functionalized 5-Nitroisoxazoles: Synthesis of 5-Amino- and 5-[Hydroxy(tetrahydrofuran-2-yl)amino]isoxazoles

  摘要：

  Reduction by using SnCl2 of easily accessible 5-nitroisoxazoles substituted with an electron-withdrawing group (EWG) has been studied. Whereas the reaction in ethanol yielded 5-aminoisoxazoles, performing the reaction in tetrahydrofuran gave previously unknown 5-[hydroxy(tetrahydrofuran-2-yl)amino]isoxazoles. Both reduction procedures were optimized to afford the corresponding products in good to excellent yields. Some mechanistic details concerning the inclusion of the tetrahydrofuranyl moiety into the reaction product are discussed

  DOI：

  10.1055/s-0033-1340827

文献信息

• Unexpected Heterocyclization of Electrophilic Alkenes by Tetranitromethane in the Presence of Triethylamine. Synthesis of 5-Nitroisoxazoles
  作者：Yulia A. Volkova、Elena B. Averina、Dmitry A. Vasilenko、Kseniya N. Sedenkova、Yuri K. Grishin、Per Bruheim、Tamara S. Kuznetsova、Nikolai S. Zefirov

  DOI：10.1021/acs.joc.8b03086

  日期：2019.3.15

  A novel reaction of tetranitromethane with electrophilic alkenes in the presence of triethylamine affording substituted 5-nitroisoxazoles is described. Triethylamine reacts with tetranitromethane to generate N-nitrotriethylammonium and trinitromethanide. This process provides the heterocyclization of electrophilic alkenes. A variety of α,β-unsaturated aldehydes, ketones, esters, amides, phosphonates

  描述了在三乙胺存在下四硝基甲烷与亲电烯烃的新型反应，提供了取代的5-硝基异恶唑。三乙胺与四硝基甲烷反应生成N-硝基三乙铵和三硝基甲烷。该过程提供了亲电烯烃的杂环化。各种α，β-不饱和醛，酮，酯，酰胺，膦酸酯，硝基和硫化合物参与了杂环化反应，并以良好或高收率获得了多种官能化的5-硝基异恶唑。讨论了反应的范围和局限性以及机理建议。