1-methyl-2-(1-nitroethyl)benzene | 79101-78-3

• 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: 1-methyl-2-(1-nitroethyl)benzene
• CAS: 79101-78-3
• 化学式: C₉H₁₁NO₂
• 分子量: 165.192
• InChiKey: RWHLAMBLYAEGPQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  45.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1-methyl-2-(1-nitroethyl)benzene 在 sodium tetrahydroborate 、 nickel chloride hexahydrate 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 5.5h， 生成 5-methyl-5-(2-methylphenyl)pyrrolidin-2-one
  参考文献：
  名称：

  Synthesis of 5-alkyl-5-aryl-γ-lactams from 1-aryl-substituted nitroalkanes and methyl acrylate via Michael addition and reductive lactamization

  摘要：

  A general method for accessing 5-alkyl-5-aryl-gamma-lactams has been developed using readily available aryl bromides, nitroalkanes, and methyl acrylate as the starting materials. The palladium-catalyzed arylation of nitroalkanes gave the 1-aryl-substituted nitroalkanes, which underwent the DBU-mediated Michael addition with methyl acrylate at room temperature to afford the methyl 4-aryl-4-nitroalkanoates. The latter were then subjected to the nitro reduction using NaBH4-NiCl2 center dot 6H(2)O in MeOH at 0 degrees C to furnish, after treatment with aqueous K2CO3 at room temperature, the 5-alkyl-5-aryl-gamma-lactams in good to excellent overall yields. Selected examples of N-alkylation of the gamma-lactams were also illustrated. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2014.04.074
• 作为产物：
  描述：

  硝基乙烷 、 2-溴甲苯 在 potassium phosphate 、 tris-(dibenzylideneacetone)dipalladium(0) 、 2-二-叔丁基磷-2'-甲基联苯 作用下， 以 乙二醇二甲醚 为溶剂， 反应 14.0h， 以87%的产率得到1-methyl-2-(1-nitroethyl)benzene
  参考文献：
  名称：

  Synthesis of 5-alkyl-5-aryl-γ-lactams from 1-aryl-substituted nitroalkanes and methyl acrylate via Michael addition and reductive lactamization

  摘要：

  A general method for accessing 5-alkyl-5-aryl-gamma-lactams has been developed using readily available aryl bromides, nitroalkanes, and methyl acrylate as the starting materials. The palladium-catalyzed arylation of nitroalkanes gave the 1-aryl-substituted nitroalkanes, which underwent the DBU-mediated Michael addition with methyl acrylate at room temperature to afford the methyl 4-aryl-4-nitroalkanoates. The latter were then subjected to the nitro reduction using NaBH4-NiCl2 center dot 6H(2)O in MeOH at 0 degrees C to furnish, after treatment with aqueous K2CO3 at room temperature, the 5-alkyl-5-aryl-gamma-lactams in good to excellent overall yields. Selected examples of N-alkylation of the gamma-lactams were also illustrated. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2014.04.074

文献信息

• Palladium-catalyzed α-arylation of nitroalkanes with aryl triflates through the C(sp2)−C(sp3) bond coupling
  作者：Sengui Hu、Xiaoyu He、Zhiguo Lei、Lin Yu、Wengui Duan

  DOI：10.1016/j.molstruc.2023.135565

  日期：2023.8

  Herein, we present an efficient and practical method for the synthesis of α-arylated nitroalkanes through palladium-catalyzed cross-coupling of nitroalkanes and phenol derivatives under mild conditions. The key to this success lies in using BrettPhos as a ligand. Compared with the known methods, this method is more novel and environmentally friendly by using phenol derivatives acting as arylating reagents

  在此，我们提出了一种在温和条件下通过钯催化的硝基烷烃和苯酚衍生物的交叉偶联合成 α-芳基化硝基烷烃的有效且实用的方法。这一成功的关键在于使用 BrettPhos 作为配体。与已知方法相比，该方法使用可从天然丰富的木质素中获得的苯酚衍生物作为芳基化试剂，更加新颖和环保。带有供电子或吸电子的底物与反应相容，以 50% 至 90% 的产率提供 α-芳基化硝基烷烃。此外，可以容忍各种官能团，例如卤化物、胺、乙酰基、烯烃、酯、醚和硫醚。通过使用新开发的协议，
• KURZ, M. E.;NGOVIWATCHAI, PREECHA;TANTRARANT, TOSAPORN, J. ORG. CHEM., 1981, 46, N 23, 4668-4672
  作者：KURZ, M. E.、NGOVIWATCHAI, PREECHA、TANTRARANT, TOSAPORN

  DOI：——

  日期：——