2-(1-(4-methoxyphenyl)-2-nitroethyl)cyclopentanone | 67861-26-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 2-(1-(4-methoxyphenyl)-2-nitroethyl)cyclopentanone
• 英文别名: 2-[1-(4-Methoxyphenyl)-2-nitroethyl]cyclopentan-1-one
• CAS: 67861-26-1
• 化学式: C₁₄H₁₇NO₄
• 分子量: 263.293
• InChiKey: YGOZUQWDGDHNFX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  72.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  4-甲氧基-β-硝基苯乙烯 、 1-(三甲基硅氧基)环戊烯 在 lithium perchlorate 作用下， 以 乙醚 为溶剂， 反应 1.0h， 以75%的产率得到2-(1-(4-methoxyphenyl)-2-nitroethyl)cyclopentanone
  参考文献：
  名称：

  Chemoselectivity in the Michael Addition of Silyl Enol Ethers in Lithium Perchlorate-Diethyl Ether Medium. Evidence for Facile Silyl Group Transfer to Michael Acceptors

  摘要：

  The silyl enol ethers from cyclohexanone and cyclopentanone underwent efficient 1,4-addition to beta-nitro- and beta,beta-dicyanostyrenes in 5 M lithium perchlorate/diethyl ether (LPDE) at ambient temperature to give the corresponding Michael adducts in good yields and with moderate stereoselectivity. The reaction was found to be highly chemoselective in that alpha,beta-unsaturated carbonyl compounds failed to undergo Michael addition with the silyl enol ethers under identical conditions. The experimental evidence suggests that the mechanism involves transfer of the silyl group from the silyl enol ether to the Michael acceptor. The silyl enol ethers reacted with p-benzoquinone in 5 M LPDE to give benzofuran derivatives in good yields. Reaction with chloranil yielded the corresponding O-alkylated products while with DDQ, the corresponding C-alkylated products were obtained in excellent yields and with high regio- and stereoselectivities.

  DOI：

  10.1021/jo00121a022

文献信息

• C3-Symmetric Proline-Functionalized Organocatalysts: Enantioselective Michael Addition Reactions
  作者：Jarugu Narasimha Moorthy、Satyajit Saha

  DOI：10.1002/ejoc.201000569

  日期：2010.11

  C 3 -Symmetric, tripodal catalyst 4 based on 1,3,5-triethylbenzene, which incorporates the features of a molecular receptor, is shown to catalyze Michael addition reactions of carbonyl compounds to β-nitrostyrenes in a high stereoselectivity (up to 99:1 dr and up to 98 % ee).

  基于 1,3,5-三乙苯的 C 3 -对称三足催化剂 4 结合了分子受体的特征，显示出以高立体选择性（高达 99: 1 dr 和高达 98 % ee)。
• Prolinal dithioacetals: Highly efficient organocatalysts for the direct nitro-Michael additions in both organic and aqueous media
  作者：Tanmay Mandal、Wen Kuo、Matthew Su、Kartick Bhowmick、John C.-G. Zhao

  DOI：10.1016/j.tet.2017.10.008

  日期：2017.11

  Some novel prolinal dithioacetal derivatives have been synthesized and applied as the organocatalysts for the direct Michael addition of ketones and aldehydes to nitroalkenes. High enantioselectivities and diastereoselectivities have been obtained in both organic and aqueous media (dichloromethane, water, or brine).

  已经合成了一些新颖的脯氨二乙缩醛衍生物，并将其用作有机催化剂，用于将酮和醛直接迈克尔加成到硝基烯烃上。在有机和水性介质（二氯甲烷，水或盐水）中均获得了高对映选择性和非对映选择性。
• Chiral picolylamines for Michael and aldol reactions: probing substrate boundaries
  作者：Thomas C. Nugent、Ahtaram Bibi、Abdul Sadiq、Mohammad Shoaib、M. Naveed Umar、Foad N. Tehrani

  DOI：10.1039/c2ob26382c

  日期：——

  organocatalyst template, a vicinal chiral diamine based on a pyridine-primary amine motif. The addition of cyclohexanone to β-nitrostyrene has many catalyst solutions, but cyclopentanone and isobutyraldehyde additions continue to be challenging. PicAm-3 (10 mol%) readily allows the Michael addition of cyclopentanone or isobutyraldehyde (5.0 equiv.) to β-nitrostyrene derivatives. By contrast, PicAm-1 (7.0 mol%)

  在这里，我们报告了有关通过吡啶甲基胺有机催化剂模板（基于吡啶-伯胺基序的邻位手性二胺）增加底物宽度的研究。的加法环己酮 到 β-硝基苯乙烯 有很多催化剂溶液，但是 环戊酮异丁醛的添加仍然具有挑战性。PicAm- 3（10 mol％）允许迈克尔添加环戊酮 或者 异丁醛（5.0当量）β-硝基苯乙烯衍生物。相比之下，PicAm- 1（7.0 mol％）最适合催化Aldol反应环己酮 或者 环庚酮（3.3当量）与芳族醛。报告了18种产品，每种反应类型都报告了新产品（4b–d，9c）。通常注意到非常好的产率和立体选择性。需要酸添加剂的反应通过瞬时手性烯胺进行，并提出了双功能催化模型的机理实例。
• MOORGANI M. C.; TRIVEDI G. K., INDIAN J. CHEM., 1978, B 16, NO 5, 405-410
  作者：MOORGANI M. C.、 TRIVEDI G. K.

  DOI：——

  日期：——