(2R,3S)-2-isopropyl-4-nitro-3-(p-tolyl)butanal

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (2R,3S)-2-isopropyl-4-nitro-3-(p-tolyl)butanal
• 英文别名: (2R,3S)-3-(4-methylphenyl)-4-nitro-2-propan-2-ylbutanal
• 化学式: C₁₄H₁₉NO₃
• 分子量: 249.31
• InChiKey: WVZHERLDEJRVFC-ZIAGYGMSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  62.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  4-methyl-β-nitrostyrene 、 异戊醛 在 (2S)-N-tritylpyrrolidine-2-carboxamide 、 苯甲酸 作用下， 以 甲苯 为溶剂， 反应 24.5h， 以91%的产率得到(2R,3S)-2-isopropyl-4-nitro-3-(p-tolyl)butanal
  参考文献：
  名称：

  Aromatic l-prolinamide-catalyzed asymmetric Michael addition of aldehydes to nitroalkenes

  摘要：

  Two chiral aromatic L-prolinamides were synthesized in high overall yield (95%) from N-Boc-L-proline and served as organocatalysts in asymmetric Michael reactions of aldehydes to nitroalkenes. Under the optimized reaction conditions, (S)-N-tritylpyrrolidine-2-carboxamide 4 was found to be a highly efficient organocatalyst for the Michael addition, and the corresponding Michael adducts were obtained in good yields (up to 94%), with excellent enantioselectivities (up to 99% ee) and diastereoselectivities (up to 99:1 dr). (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2014.11.006

文献信息

• Novel bifunctional l-prolinamide derivatives as highly efficient organocatalysts for asymmetric nitro-Michael reactions
  作者：Dan Xu、Junliang Wang、Lijun Yan、Mingquan Yuan、Xiaotian Xie、Yongchao Wang

  DOI：10.1016/j.tetasy.2016.08.019

  日期：2016.12

  A series of novel bifunctional L-prolinamide derivatives was synthesised, of which (S)-N-((S)-2-oxo-1-phenyl-2-(tritylamino)ethyl)pyrrolidine-2-carboxamide 6 was found to be the most effective catalyst in terms of both the yield and stereoselectivity for the nitro-Michael reaction of aldehydes to nitroalkenes. Under these optimized reaction conditions, 17 corresponding novel nitro-Michael addition adducts had high yields (up to 94%) and showed excellent diastereoselectivity (up to 99:1 dr) and enantioselectivity (up to 98 ee) under mild reaction conditions. (C) 2016 Elsevier Ltd. All rights reserved.
• Aromatic l-prolinamide-catalyzed asymmetric Michael addition of aldehydes to nitroalkenes
  作者：Yongchao Wang、Jun Lin、Kun Wei

  DOI：10.1016/j.tetasy.2014.11.006

  日期：2014.12

  Two chiral aromatic L-prolinamides were synthesized in high overall yield (95%) from N-Boc-L-proline and served as organocatalysts in asymmetric Michael reactions of aldehydes to nitroalkenes. Under the optimized reaction conditions, (S)-N-tritylpyrrolidine-2-carboxamide 4 was found to be a highly efficient organocatalyst for the Michael addition, and the corresponding Michael adducts were obtained in good yields (up to 94%), with excellent enantioselectivities (up to 99% ee) and diastereoselectivities (up to 99:1 dr). (C) 2014 Elsevier Ltd. All rights reserved.