(2-methoxypyridin-3-yl)(phenyl)methanone | 1246461-87-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2-methoxypyridin-3-yl)(phenyl)methanone
• 英文别名: 2-methoxy-3-pyridyl phenyl ketone；2-methoxypyridin-3-yl(phenyl)ketone；3-benzoyl-2-methoxypyridine；(2-Methoxypyridin-3-yl)-phenylmethanone；(2-methoxypyridin-3-yl)-phenylmethanone
• CAS: 1246461-87-9
• 化学式: C₁₃H₁₁NO₂
• 分子量: 213.236
• InChiKey: DIGJQTPGJUTCTG-UHFFFAOYSA-N

物化性质

• 熔点：
  80.2-81.5 °C
• 沸点：
  372.4±27.0 °C(Predicted)
• 密度：
  1.154±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  39.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2-methoxypyridin-3-yl)(phenyl)methanone 在 dichloro(N,N,N’,N‘-tetramethylethylenediamine)zinc 、 2,2,6,6-tetramethylpiperidinyl-lithium 、 碘 作用下， 以 四氢呋喃 为溶剂， 反应 0.25h， 以88%的产率得到
  参考文献：
  名称：

  使用deprotolithiation-吡啶酮的功能化原位浸锌†

  摘要：

  芳基酮的金属化是通过在ZnCl 2 ·TMEDA存在下使用LiTMP来实现的，随后通过碘的拦截或钯催化的交叉偶联反应证明了这一点。合成的碘代酮之一已被进一步精加工以达到具有生物学意义的衍生物。

  DOI：

  10.1039/c6ra11370b
• 作为产物：
  描述：

  2-甲氧基吡啶 、 苯甲酰氯 在 aluminum tris-(tert-butyl-(1-isopropyl-2,2-dimethyl-propyl)amide)-tris(lithium chloride) 、 copper(I) cyanide di(lithium chloride) 、 zinc(II) chloride 作用下， 以 四氢呋喃 为溶剂， 反应 0.33h， 以80%的产率得到(2-methoxypyridin-3-yl)(phenyl)methanone
  参考文献：
  名称：

  使用新的沮丧的Lewis对或BF3⋅OEt2的tmp-锌和tmp-镁碱对吡啶和相关杂环进行高度选择性的金属化

  摘要：

  有效的和选择性的：基于BF沮丧路易斯对3 ⋅OEt 2和LiCl-络合tmpMg或tmpZn酰胺（TMP = 2,2,6,6-四甲基）允许各种官能化的N-杂环的高效和区域选择性金属化（参见方案用于例子）。此外，在存在或不存在BF 3· OEt 2的情况下进行的这种金属化能够完全切换区域选择性，从而允许互补的官能化。

  DOI：

  10.1002/anie.201002031

文献信息

• Deprotonative Metalation of Aromatic Compounds by Using an Amino-Based Lithium Cuprate
  作者：Tan Tai Nguyen、Nada Marquise、Floris Chevallier、Florence Mongin

  DOI：10.1002/chem.201100990

  日期：2011.9.5

  employed to attempt the interception of the generated aryl cuprates, aroyl chlorides, iodomethane, and diphenyl disulfide efficiently reacted. In addition, different oxidative agents were identified to afford symmetrical biaryls. Finally, palladium‐catalyzed coupling with aryl halides was optimized and allowed the synthesis of different aryl derivatives in medium to good yields.

  以2,4-二甲氧基嘧啶和2-甲氧基吡啶为底物，以苯甲酰氯为亲电子试剂，对基于氨基的铜酸锂对芳香族化合物的去质子化进行了优化。[（tmp）2 CuLi]（+2 LiCl）（tmp = 2,2,6,6-四甲基哌啶子基）被确定为最佳试剂，其应用范围已扩展到苯甲醚，1,4-二甲氧基苯，其他取代的吡啶，呋喃，噻吩及其衍生物和N -Boc-吲哚（Boc =叔-丁氧羰基）。在试图拦截所生成的芳基铜酸酯的亲电试剂中，芳酰氯，碘甲烷和二苯基二硫化物有效地反应了。另外，鉴定出不同的氧化剂以提供对称的联芳基。最后，优化了钯催化与芳基卤化物的偶联，并以中等收率合成了不同的芳基衍生物。
• Synthesis of biaryl ketones by arylation of Weinreb amides with functionalized Grignard reagents under thermodynamic control <i>vs.</i> kinetic control of <i>N</i>,<i>N</i>-Boc₂-amides
  作者：Guangchen Li、Michal Szostak

  DOI：10.1039/d0ob00813c

  日期：——

  A highly efficient method for chemoselective synthesis of biaryl ketones by arylation of Weinreb amides (N-methoxy-N-methylamides) with functionalized Grignard reagents is reported. This protocol offers rapid entry to functionalized biaryl ketones after Mg/halide exchange with i-PrMgCl·LiCl under operationally-simple and practical reaction conditions. The scope of the method is highlighted in >40 examples

  报道了一种通过Weinreb酰胺（N-甲氧基-N-甲基酰胺）与功能化格氏试剂的芳基化反应，化学选择性合成联芳基酮的高效方法。在操作简单和实际的反应条件下，与i-PrMgCl·LiCl交换Mg /卤化物后，该方案可快速进入官能化的联芳基酮。在40多个实例中突出了该方法的范围，包括生物活性化合物和药物衍生物。总的来说，这种无过渡金属的方法相对于最近通过氧化加成NC（O）键实现的酰胺交叉偶联具有重要优势。考虑到酰胺酰化反应在现代合成中的实用性，我们预计该方法将引起广泛关注。
• Efficient two-step access to azafluorenones and related compounds
  作者：Nada Marquise、Philip J. Harford、Floris Chevallier、Thierry Roisnel、Andrew E.H. Wheatley、Philippe C. Gros、Florence Mongin

  DOI：10.1016/j.tetlet.2013.04.020

  日期：2013.6

  Crystals of a lithiocuprate prepared from copper(I) chloride and lithium 2,2,6,6-tetramethylpiperidide (2 equiv) were isolated and analyzed by X-ray diffraction as (TMP)(2)Cu(Cl)Li-2 center dot THF. The observation of this species is consistent with its having a role in deprotocupration-aroylation. Phenyl pyridyl ketones, phenyl quinolyl ketones, and phenyl thienyl ketones were prepared in tetrahydrofuran using the lithiocuprate and aroyl chorides as electrophiles. Diaryl ketones bearing a chloro group at the 2 position (of a pyridyl or phenyl group) thus synthesized were next converted through palladium-catalyzed ring closure to polycycles of the 5H-indeno[1,2-b]pyridin-5-one, 11H-indeno[1,2-b]quinolin-11-one, 9H-indeno[2,1-c]pyridin-9-one, and 8H-indeno[2,1-b]thiophen-8-one families. (C) 2013 Elsevier Ltd. All rights reserved.
• Synthesis of azafluorenones and related compounds using deprotocupration–aroylation followed by intramolecular direct arylation
  作者：Nada Marquise、Philip J. Harford、Floris Chevallier、Thierry Roisnel、Vincent Dorcet、Anne-Laure Gagez、Sophie Sablé、Laurent Picot、Valérie Thiéry、Andrew E.H. Wheatley、Philippe C. Gros、Florence Mongin

  DOI：10.1016/j.tet.2013.09.030

  日期：2013.11

  The efficiency of the deprotocupration-aroylation of 2-chloropyridine using lithiocuprates prepared from CuX (X=Cl, Br) and LiTMP (TMP=2,2,6,6-tetramethylpiperidido, 2 equiv) was investigated. CuCl was identified as a more suitable copper source than CuBr for this purpose. Different diaryl ketones bearing a halogen at the 2 position of one of the aryl groups were synthesized in this way from azines and thiophenes. These were then involved in palladium-catalyzed ring closure: substrates underwent expected CH-activation-type arylation to afford fluorenone-type compounds, and were also subjected to cyclization reactions leading to xanthones, notably in the presence of oxygen-containing substituents or reagents. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.
• Deprotonative metalation of aromatic compounds using mixed lithium–iron combinations
  作者：Elisabeth Nagaradja、Floris Chevallier、Thierry Roisnel、Viatcheslav Jouikov、Florence Mongin

  DOI：10.1016/j.tet.2012.02.019

  日期：2012.4

  The deprotonation of 2-methoxypyridine was attempted using putative (TMP)(3)FeLi prepared from different iron sources. Using iodine to intercept the metalated 2-methoxypyridine, the best result was obtained from FeBr2 (1 equiv) using THF at room temperature: nevertheless, in addition to the expected iodide, the corresponding 2,2'-dimer was obtained (86% total yield). The origin of the competitive formation of the 2,2'-dimer was not identified but mechanisms were suggested to explain its formation. It was observed that the nature of the electrophile employed to trap the 3-metalated 2-methoxypyridine has a strong impact on this dimer formation, the latter being favored using iodine (35% yield), but also benzophenone (28%), benzoyl chloride (22%), methyl iodide (27%), allyl bromide (15%), benzyl bromide (41%), and tetramethylthiuram disulphide (36%); for this reason, the yields of the expected derivatives were only 51, 15, 62, 0, <5, 18, and 0%, respectively. In contrast, using aldehydes readily led to the expected pyridine alcohols without dimerization (59% yield using 3,4,5-trimethoxybenzaldehyde and 66% yield using pivalaldehyde). 2,6-Dimethoxypyridine (in 68% yield), anisole (47%), 2,4-dimethoxypyrimidine (50% at C5 and 3% at C6), 2-fluoropyridine (64%), and thiophene (49%) were similarly converted into the corresponding alcohols after subsequent trapping with pivalaldehyde. Using iodine to trap the 2-metalated anisole did not lead to dimer formation, and 2-iodoanisole was isolated in 71% yield. (C) 2012 Elsevier Ltd. All rights reserved.