BAY-C 1339 | 73257-44-0

• 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: BAY-C 1339
• 英文别名: dimethyl 1,4-dihydro-2,6-dimethyl-4-(2-methylphenyl)pyridine-3,5-dicarboxylate；2,6-dimethyl-3,5-dimethoxycarbonyl-4-(2-methylphenyl)-1,4-dihydropyridine；Dimethyl 2,6-dimethyl-4-(o-tolyl)-1,4-dihydropyridine-3,5-dicarboxylate；dimethyl 2,6-dimethyl-4-(2-methylphenyl)-1,4-dihydropyridine-3,5-dicarboxylate
• CAS: 73257-44-0
• 化学式: C₁₈H₂₁NO₄
• 分子量: 315.369
• InChiKey: JCLJZOQVXKOUSW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  23
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  64.6
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  BAY-C 1339 在 palladium dihydroxide 盐酸 、 氢气 、 sodium methylate 作用下， 以 甲醇 为溶剂， 60.0 ℃ 、344.73 kPa 条件下， 反应 168.0h， 生成 (2R,3S,4R,5R,6S)-2,6-Dimethyl-4-o-tolyl-piperidine-3,5-dicarboxylic acid dimethyl ester
  参考文献：
  名称：

  Hantzsch 1,2,3,4-tetrahydropyridines related to calcium antagonists. Two synthetic approaches.

  摘要：

  DOI：

  10.1016/s0040-4039(00)98223-6
• 作为产物：
  描述：

  乙酰乙酸甲酯 、 2-甲基苯甲醛 在 [MoO₂(2-[(2-hydroxypropylimino)methyl]phenol^(2-)(CH₃OH)] 、 ammonium acetate 、 四丁基溴化铵 作用下， 反应 0.42h， 以88%的产率得到BAY-C 1339
  参考文献：
  名称：

  A molybdenum(VI) complex as an efficient catalyst for the synthesis of dihydropyridines

  摘要：

  利用熔融的四丁基溴化铵离子液体作为反应介质，以钼(VI)配合物作为均相催化剂，从醛、β-酮酯或环己二酮和乙酸铵出发，实现了各种取代汉奇-1,4-二氢吡啶和六氢喹啉的高效合成。该新颖方法始终能获得优异的产率（70-92%）和短的反应时间（7-30分钟）。

  DOI：

  10.1007/s11243-009-9304-y

文献信息

• Mannich reaction of dihydropyridine derivatives I. Reactions with secondary amines.
  作者：JIRO ARITOMI、SHOZO UEDA、HARUKI NISHIMURA

  DOI：10.1248/cpb.28.3163

  日期：——

  Dialkyl 4-aryl-1, 4-dihydro-2, 6-dimethylpyridine-3, 5-dicarboxylates (III) were subjected to the Mannich reaction with excess paraformaldehyde and secondary amine hydrochloride in boiling ethanolic solution. When the compounds III were treated with a 5-to 7-fold molar excess of the aldehyde and amine salt, 2, 6-bis (2-disubstituted aminoethyl)-dihydropyridine derivatives (V) were obtained in good yields. On treatment with a 2- to 3-fold molar excess of the reactants, compounds III were converted to 2-(2-disubstituted aminoethyl)-6-methyldihydropyridine derivatives (IV) and V. When dioxane was used as a solvent with a 6-fold molar excess of the reactants, the tetrakis (dimethylaminomethyl) derivative (VII) was obtained.

  二烷基 4-芳基-1, 4-二氢-2, 6-二甲基吡啶-3, 5-二羧酸酯 (III) 在沸腾的乙醇溶液中与过量的多聚甲醛和二级胺盐酸盐进行曼尼希反应。当化合物 III经5-至7-倍摩尔过量的醛和胺盐处理时，可获得产率良好的 2, 6-双(2-二取代氨基乙基)-二氢吡啶衍生物 (V)。用2-至3-倍摩尔过量的反应物处理时，化合物 III 转化成 2-(2-二取代氨基乙基)-6-甲基二氢吡啶衍生物 (IV) 和 V。当使用二氧六环作为溶剂并采用6-倍摩尔过量的反应物时，得到四(二甲氨基甲基)衍生物 (VII)。
• 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, 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。
• 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。
• Chiral Phosphoric Acid Catalyzed Enantioselective Desymmetrization of 1,4‐Dihydropyridines by C(sp ³ )−H Bromination
  作者：Min Han、Shi‐qi Zhang、Xin Cui、Qi‐wei Wang、Guang‐xun Li、Zhuo Tang

  DOI：10.1002/anie.202201418

  日期：2022.5.23

  used as substrates to obtain chiral Hantzsch-type 1,4-DHPs, which are frequently contained in pharmaceuticals. The inert C−H bond was converted into a versatile C−Br bond, which enabled the modification of the chiral 1,4-DHP derivatives with high efficiency by nucleophilic substitution. Furthermore, axially chiral 4-aryl pyridines were accessible by central-to-axial chirality conversion.

  容易获得的对称 1,4-二氢吡啶 (1,4-DHP) 被用作底物以获得药物中经常含有的手性 Hantzsch 型 1,4-DHP。惰性 C-H 键被转化为通用的 C-Br 键，从而能够通过亲核取代高效地修饰手性 1,4-DHP 衍生物。此外，轴向手性 4-芳基吡啶可通过中心到轴向手性转换获得。