tert-butyl 6-methylpyridin-2-yl(prop-2-ynyl)carbamate | 1284210-53-2

• 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: tert-butyl 6-methylpyridin-2-yl(prop-2-ynyl)carbamate
• 英文别名: tert-butyl N-(6-methylpyridin-2-yl)-N-prop-2-ynylcarbamate
• CAS: 1284210-53-2
• 化学式: C₁₄H₁₈N₂O₂
• 分子量: 246.309
• InChiKey: NPOKCNPSYAJVMQ-UHFFFAOYSA-N

物化性质

• 沸点：
  348.4±37.0 °C(Predicted)
• 密度：
  1.103±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  42.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  tert-butyl 6-methylpyridin-2-yl(prop-2-ynyl)carbamate 在 silver trifluoromethanesulfonate 作用下， 以 乙腈 为溶剂， 反应 4.0h， 以28%的产率得到3,5-dimethylimidazo[1,2-α]pyridine
  参考文献：
  名称：

  N-(Prop-2-yn-1-yl)pyridin-2-amines 的银催化环化

  摘要：

  我们在此报告了银催化的易于获得的 N-(prop-2-yn-1-yl)pyridine-2-amines 的环异构化作为合成不同取代的 3-methylimidazo[1,2-a ]吡啶。异构化反应在温和的反应条件下进行，具有良好的产率和优异的区域选择性。还报告了基于 DFT 的机械分析。

  DOI：

  10.1002/ejoc.201201258
• 作为产物：
  描述：

  3-溴丙炔 、 6-甲基吡啶-2-氨基甲酸叔丁酯 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 0.5h， 以60%的产率得到tert-butyl 6-methylpyridin-2-yl(prop-2-ynyl)carbamate
  参考文献：
  名称：

  N-(Prop-2-yn-1-yl)pyridin-2-amines 的银催化环化

  摘要：

  我们在此报告了银催化的易于获得的 N-(prop-2-yn-1-yl)pyridine-2-amines 的环异构化作为合成不同取代的 3-methylimidazo[1,2-a ]吡啶。异构化反应在温和的反应条件下进行，具有良好的产率和优异的区域选择性。还报告了基于 DFT 的机械分析。

  DOI：

  10.1002/ejoc.201201258

文献信息

• A multicomponent palladium-catalyzed carbonylative approach to imidazopyridinyl-N,N-dialkylacetamides
  作者：Lucia Veltri、Patrizio Russo、Tommaso Prestia、Paola Vitale、Roberto Romeo、Bartolo Gabriele

  DOI：10.1016/j.jcat.2020.03.026

  日期：2020.6

  A novel, multicomponent approach to 2-(imidazo[1,2-a]pyridin-3-yl)-N,N-dialkylacetamides (very important class of fused heterocyclic derivatives, known to act on central nervous system by enhancing the activity of the GABA) is reported. It is based on the carbonylation reaction of N-Boc-(prop-2-yn-1yl)pyridin-2-amines carried out in the presence of secondary amines (2-3 equiv) under oxidative conditions, using oxygen (from air) as oxidant (4:1 CO-air, total pressure 20 atm) and PdI2/KI as the catalytic system (0.33-1 mol% of PdI2 and 0.5 equiv of KI) in MeCN as the solvent at 100 degrees C. The process leads to the target compounds in good to high yields (67-90%) through an ordered sequence of steps, occurring in situ under the reaction conditions: Boc-deprotection of the substrate is followed by PdI2/KI-catalyzed oxidative monoaminocarbonylation of the terminal triple bond (or vice versa) to give a 2-ynamide intermediate, which then undergoes intramolecular aza-Michael reaction and isomerization. (C) 2020 Elsevier Inc. All rights reserved.
• Water mediated deprotective intramolecular hydroamination of N-propargylaminopyridines: synthesis of imidazo[1,2-a]pyridines
  作者：Darapaneni Chandra Mohan、Niraj B. Sarang、Subbarayappa Adimurthy

  DOI：10.1016/j.tetlet.2013.08.112

  日期：2013.11

  Metal-free synthesis of substituted imidazole [1,2-alpha]dpyridines from deprotective N-(prop-2-yn-1-yl)pyridin-2-amines in water is elucidated. Electron releasing substituents on pyridine ring provided pure products in quantitative yields without separation by column chromatography. (C) 2013 Elsevier Ltd. All rights reserved.
• A Base Promoted Cyclization of <i>N</i>-Propargylaminopyridines. Synthesis of Imidazo[1,2-<i>a</i>]pyridine Derivatives
  作者：Suren Husinec、Rade Markovic、Milos Petkovic、Veselin Nasufovic、Vladimir Savic

  DOI：10.1021/ol200508x

  日期：2011.5.6

  A base promoted cyclization of the protected N-propargylaminopyridines was shown to be an efficient method for the preparation of imidazo[1,2-a] pyridine derivatives. The reactions were carried out with a small excess of base, at room temperature or slightly above producing the heterocyclic products in moderate to good yields. The stereoelectronic properties of substituents on the pyridine ring were shown to influence the cyclization process.
• Silver-Catalyzed Cyclization of<i>N</i>-(Prop-2-yn-1-yl)pyridin-2-amines
  作者：Mourad Chioua、Elena Soriano、Lourdes Infantes、M. Luisa Jimeno、José Marco-Contelles、Abdelouahid Samadi

  DOI：10.1002/ejoc.201201258

  日期：2013.1

  We report herein the silver-catalyzed cycloisomerization of readily available N-(prop-2-yn-1-yl)pyridine-2-amines as a new and practical method for the synthesis of differently substituted 3-methylimidazo[1,2-a]pyridines. The isomerization reactions proceeded under mild reactions conditions to give good yields and excellent regioselectivity. A DFT-based mechanistic analysis is also reported.

  我们在此报告了银催化的易于获得的 N-(prop-2-yn-1-yl)pyridine-2-amines 的环异构化作为合成不同取代的 3-methylimidazo[1,2-a ]吡啶。异构化反应在温和的反应条件下进行，具有良好的产率和优异的区域选择性。还报告了基于 DFT 的机械分析。