1-(4-methoxy-benzyl)-piperidine | 46441-11-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: 1-(4-methoxy-benzyl)-piperidine
• 英文别名: 1-[(4-methoxyphenyl)methyl]-piperidine；N-(4-methoxybenzyl)piperidine；1-(4-Methoxybenzyl)piperidine；1-[(4-methoxyphenyl)methyl]piperidine
• CAS: 46441-11-6
• 化学式: C₁₃H₁₉NO
• mdl: MFCD01653292
• 分子量: 205.3
• InChiKey: DGSQXYGFDGFQLQ-UHFFFAOYSA-N

物化性质

• 沸点：
  283 °C(Press: 712 Torr)
• 密度：
  1.027±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.538
• 拓扑面积：
  12.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1-(4-methoxy-benzyl)-piperidine 在 盐酸 、 氯甲酸乙烯酯 作用下， 生成 哌啶盐酸盐
  参考文献：
  名称：

  Manipulation of substituents at nitrogen in tropanes, homotropanes, and dehydro- derivatives

  摘要：

  Trop-6-ene (8-methyl-8-azabicyclo[3.2.1]oct-6-ene) and substituted N-benzylnortrop-6-enes are synthesised. N-Debenzylation of tropanes fails using a wide variety of non-hydrogenolytic conditions despite effective application in model piperidine derivatives; debenzylation of homotropanes is more successful, giving norhomotropane and norhomotrop-7-ene. Bridged N-benzyl compounds react more slowly than N-methyl analogues with chloroformates; the resulting quaternary intermediates are more prone than the N-methyl analogues to suffer competitive reversion to the starting amine, especially in the tropanes, consistent with slower S(N)2 attack at the benzylic carbon during decomposition; the use of an N-p-methoxybenzyl group does allow partial debenzylation to nortrop-6-ene, suggesting greater SNI character in the decomposition step in this case. 'Equatorial' attack is preferred in methylation of N-benzyl-nortrop-6-ene and -homotrop-7-ene with CH3I; subsequent reductive debenzylation of the quaternary salt achieves overall replacement of N-benzyl by N-methyl in both cases. VT NMR studies show the presence of a single 'equatorial' invertomer (Cl syn- to the 2C-bridge) in N-chloro-norhomotropanes and -7-enes and, by analogy, in the N-alkyl compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(98)00643-7
• 作为产物：
  描述：

  对甲氧基苯甲酰氯 在 苯硅烷 、 三乙胺 、 potassium hydroxide 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 生成 1-(4-methoxy-benzyl)-piperidine
  参考文献：
  名称：

  Facile and efficient KOH-catalysed reduction of esters and tertiary amides

  摘要：

  在温和且环境友好的条件下，酯和三级酰胺被高效地还原为相应的高产率的醇和胺。所提出的KOH催化体系涉及一个简单的无溶剂条件下进行的水合硅氢化程序，且不需要使用惰性条件。

  DOI：

  10.1039/c3cc45930f

文献信息

• Method for producing amines by homogeneously catalyzed reductive amination of carbonyl compounds
  申请人：Riermeier Thomas

  公开号：US06884887B1

  公开（公告）日：2005-04-26

  The invention relates to the preparation of chiral or achiral amines by reaction of aldehydes or ketones with ammonia or primary or secondary amines in the presence of hydrogen and in the presence of homogeneous metal catalysts under mild conditions. Metal catalysts which can be used are complexes of late transition metals with chiral or achiral phosphorus-containing ligands.

  该发明涉及在温和条件下，在氢气存在下和均相金属催化剂存在下，通过醛或酮与氨或一级或二级胺的反应制备手性或无手性胺。可使用的金属催化剂是含手性或无手性磷配体的后过渡金属络合物。
• Palladium(<scp>ii</scp>)-catalysed ortho-arylation of N-benzylpiperidines
  作者：Peng Wen Tan、Maxwell Haughey、Darren J. Dixon

  DOI：10.1039/c5cc00410a

  日期：——

  Pd(II)-catalysed ortho-arylation of benzylic heterocycles with arylboronic acid pinacol esters (Ar-BPin) via directed C-H bond activation to generate the desired biaryl products is reported. This methodology is efficient and applicable to a wide range of functionalised Ar-BPin and benzylic heterocycles, allowing the direct synthesis of important biaryl motifs in modest to good yield.

  据报道，Pd（II）通过直接的CH键活化反应生成芳基硼酸频哪醇酯（Ar-BPin）来催化苄基杂环的邻芳基化反应，从而生成所需的联芳基产物。这种方法学是有效的，并且适用于各种功能化的Ar-BPin和苄基杂环，从而允许以适度到良好的产率直接合成重要的联芳基。
• Chelating Bis(1,2,3‐triazol‐5‐ylidene) Rhodium Complexes: Versatile Catalysts for Hydrosilylation Reactions
  作者：Thanh V. Q. Nguyen、Woo‐Jin Yoo、Shū Kobayashi

  DOI：10.1002/adsc.201500875

  日期：2016.2.4

  reactions. However, the substrates were mostly limited to reactive carbonyl compounds (aldehydes and ketones) or carbon‐carbon multiple bonds. Here, we describe the application of newly‐developed chelating bis(tzNHC)‐rhodium complexes (tz=1,2,3‐triazol‐5‐ylidene) for several reductive transformations. With these catalysts, the formal reductive methylation of amines using carbon dioxide, the hydrosilylation

  NHC-铑配合物（NHC = N-杂环卡宾）已被广泛用作氢化硅烷化反应的有效催化剂。但是，底物主要限于反应性羰基化合物（醛和酮）或碳-碳多重键。在这里，我们描述了新开发的螯合双（tz NHC）-铑配合物（tz = 1,2,3-三唑-5-亚烷基）在几种还原转化中的应用。使用这些催化剂，已经在温和的反应条件下实现了使用二氧化碳的胺的正式还原甲基化，酰胺和羧酸的氢化硅烷化以及使用羧酸的胺的还原烷基化。
• Transition‐Metal‐Free Multiple Functionalization of Piperidines to 4‐Substituted and 3,4‐Disubstituted 2‐Piperidinones
  作者：Delfino Chamorro‐Arenas、Alejandro A. Nolasco‐Hernández、Lilia Fuentes、Leticia Quintero、Fernando Sartillo‐Piscil

  DOI：10.1002/chem.201905262

  日期：2020.4.9

  2-piperidones was developed. Second, the intrinsic low reactivity of the unsaturated piperidones toward conjugated Grignard additions was overcome by using trimethylsilyl chloride (TMSCl) as Lewis acid. Subsequently, conjugated Grignard addition/electrophilic trapping protocol provided substituted 2-piperidone intermediates, some of which were then transformed into pharmaceutical alkaloids.

  在不使用过渡金属催化剂和精细的导向基团的情况下，哌啶的远程和多重官能化是有机合成的主要挑战之一。本文报道了史无前例的两步方案，该方案能够使哌啶多功能化为4-取代的或反式的3,4-二取代的2-哌啶酮。首先，通过利用TEMPO反应性的对偶性（在氧化和热条件下在阳离子和持久自由基形式之间波动），开发了新颖的哌啶多C（sp3）-H氧化为α，β-不饱和2-哌啶酮的化合物。其次，通过使用三甲基甲硅烷基氯（TMSCl）作为路易斯酸，可以克服不饱和哌啶酮对共轭格氏试剂的固有的低反应性。随后，
• Highly efficient and eco-friendly synthesis of tertiary amines by reductive alkylation of aldehydes with secondary amines over a Pt nanowires catalyst
  作者：Junjie Wu、Shuanglong Lu、Danhua Ge、Hongwei Gu

  DOI：10.1039/c5ra12299f

  日期：——

  A highly efficient and environmentally friendly method for the synthesis of tertiary amines by direct interaction of aldehydes with secondary amines was reported over a Pt NWs catalyst under mild reaction conditions.

  一种高效环保的方法报告了在温和反应条件下，通过醛与二级胺的直接作用在Pt NWs催化剂下合成三级胺。