2,6-dimethyl-3,5-dimethoxycarbonyl-4-(2-methylphenyl)-pyridine | 130160-98-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 2,6-dimethyl-3,5-dimethoxycarbonyl-4-(2-methylphenyl)-pyridine
• 英文别名: Dimethyl 2,6-dimethyl-4-(2-methylphenyl)pyridine-3,5-dicarboxylate
• CAS: 130160-98-4
• 化学式: C₁₈H₁₉NO₄
• 分子量: 313.353
• InChiKey: WGHXSCXVIHNZFQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  23
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  65.5
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  BAY-C 1339 在 ammonium cerium(IV) nitrate 作用下， 以 水 、 丙酮 为溶剂， 反应 0.17h， 以100%的产率得到2,6-dimethyl-3,5-dimethoxycarbonyl-4-(2-methylphenyl)-pyridine
  参考文献：
  名称：

  Rapid, High-Yield Oxidation of Hantzsch-Type 1,4-Dihydropyridines with Ceric Ammonium Nitrate

  摘要：

  使用两个当量的硝酸铈铵，4-芳基-2,6-二甲基-1,4-二氢-3,5-吡啶二羧酸盐（汉茨奇型 1,4-二氢吡啶）可被快速氧化成相应的吡啶衍生物，产量极佳。

  DOI：

  10.1055/s-1990-26982

文献信息

• An efficient, metal-free, room temperature aromatization of Hantzsch-1,4-dihydropyridines with urea–hydrogen peroxide adduct, catalyzed by molecular iodine
  作者：Mirela Filipan-Litvić、Mladen Litvić、Vladimir Vinković

  DOI：10.1016/j.tet.2008.04.040

  日期：2008.6

  A mild, highly efficient and metal-free synthetic method for aromatization of 1,4-dihydropyridines employing urea–hydrogen peroxide adduct as oxidant catalyzed by 20 mol % of molecular iodine was developed. The reaction was carried out in ethyl acetate at room temperature and the products were isolated in high to excellent yields. A plausible free-radical mechanism is proposed based on results obtained

  开发了一种温和，高效，无金属的合成方法，该方法以20 mol％的分子碘为催化剂，使用脲-过氧化氢加合物作为氧化剂进行1,4-二氢吡啶的芳构化。该反应在室温下在乙酸乙酯中进行，并且以高至优异的产率分离出产物。基于在1，4-二氢吡啶环中具有烷基和芳基取代基的衍生物所获得的结果，提出了一种可能的自由基机理。
• Rapid, High-Yield Oxidation of Hantzsch-Type 1,4-Dihydropyridines with Ceric Ammonium Nitrate
  作者：Jürg R. Pfister

  DOI：10.1055/s-1990-26982

  日期：——

  4-Aryl-2,6-dimethyl-1,4-dihydro-3,5-pyridinedicarboxylates, Hantzsch-type 1,4-dihydropyridines, are rapidly oxidized to the corresponding pyridine derivatives in excellent yields using two equivalents of ceric ammonium nitrate.

  使用两个当量的硝酸铈铵，4-芳基-2,6-二甲基-1,4-二氢-3,5-吡啶二羧酸盐（汉茨奇型 1,4-二氢吡啶）可被快速氧化成相应的吡啶衍生物，产量极佳。
• A highly efficient biomimetic aromatization of Hantzsch-1,4-dihydropyridines with t-butylhydroperoxide, catalysed by iron(III) phthalocyanine chloride
  作者：Mirela Filipan-Litvić、Mladen Litvić、Vladimir Vinković

  DOI：10.1016/j.bmc.2008.09.004

  日期：2008.10

  Rapid aromatization of Hantzsch-1,4-DHPswith t-butylhydroperoxide catalysed by iron(III) phthalocyanine chloride is described. The reaction proceeds smoothly at room temperature within 1-35 min and the products of high purity were isolated in excellent yields. To explain the reactivity of this catalytical system plausible mechanism have been proposed to involve formation of high-valent oxoferryl species as in cytochrome P450 itself. (C) 2008 Elsevier Ltd. All rights reserved.
• PFISTER, JURG R., SYNTHESIS,(1990) N, C. 689-690
  作者：PFISTER, JURG R.

  DOI：——

  日期：——
• Rapid, efficient, room temperature aromatization of Hantzsch-1,4-dihydropyridines with vanadium(V) salts: superiority of classical technique versus microwave promoted reaction
  作者：Mirela Filipan-Litvić、Mladen Litvić、Vladimir Vinković

  DOI：10.1016/j.tet.2008.08.103

  日期：2008.11

  The aromatization of 1,4-dihydropyridines (1,4-DHPs) employing group 4 (Zr and Hf) and 5 (V, Nb, Ta) elements of periodic system has been studied. The reaction with VOCl3 in dichloromethane at room temperature afforded products, substituted pyridines, in high-to-excellent yield. For the first time, the formation of charge-transfer complexes (CTCs) has been evidenced in preorganization step between

  研究了使用周期系统的第4组（Zr和Hf）和第5组（V，Nb，Ta）元素对1,4-二氢吡啶（1,4-DHPs）进行的芳构化。在室温下与VOCl 3在二氯甲烷中的反应以高至优异的产率提供了产物，取代的吡啶。首次在电子转移之前的1,4-DHP和氧化剂之间的预组织步骤中证明了电荷转移络合物（CTC）的形成。仅在中性溶剂（如二氯甲烷）中形成四氯化碳，其特征是强烈的着色。V 2 O 5将1,4-DHP芳构化在无溶剂介质中，乙酸在回流中的作用优于微波促进的反应。唯一合理的解释是在V 2 O 5的聚合物结构中发现的，该结构缓慢转移了活化反应物所需的微波能量。已发现4-正丙基-1，4-DHP的溶剂极性依赖性氧化脱烷基。出乎意料的是，与在相同反应条件下在二氯甲烷中获得的91％相比，在乙酸中的反应仅提供33％的脱烷基化产物。