6-Methyl-2-(methylamino)-4-oxochromene-3-carbaldehyde | 755009-20-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 6-Methyl-2-(methylamino)-4-oxochromene-3-carbaldehyde
• CAS: 755009-20-2
• 化学式: C₁₂H₁₁NO₃
• 分子量: 217.224
• InChiKey: LCTXJPPRRWVNGM-UHFFFAOYSA-N

物化性质

• 熔点：
  176 °C
• 沸点：
  442.7±45.0 °C(Predicted)
• 密度：
  1.27±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  55.4
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  6-Methyl-2-(methylamino)-4-oxochromene-3-carbaldehyde 在 硫酸 作用下， 反应 3.0h， 以85%的产率得到2-N-methyl-aminochromone
  参考文献：
  名称：

  Bandyopadhyay, Chandrakanta; Sur, Kumar Ranabir; Patra, Ranjan, Journal of Chemical Research, Miniprint, 2003, # 8, p. 847 - 856

  摘要：

  DOI：
• 作为产物：
  描述：

  N-methyl-1-(6-methyl-4-oxochromen-3-yl)methanimine oxide 以 甲醇 为溶剂， 反应 5.0h， 生成 6-Methyl-2-(methylamino)-4-oxochromene-3-carbaldehyde
  参考文献：
  名称：

  Ghosh, Tarun; Patra, Ranjan; Bandyopadhyay, Chandrakanta, Journal of Chemical Research, 2004, # 1, p. 47 - 49

  摘要：

  DOI：

文献信息

• Exploring α-Chromonyl Nitrones as 1,5-Dipoles
  作者：Kamal Kumar、Kathrin Wittstein、Ana García、Markus Schürmann

  DOI：10.1055/s-0031-1290070

  日期：2012.1

  and the allenoate zwitterion 2, generated by addition of phosphine to acetylenedicarboxylates, undergo a cascade reaction sequence involving an unprecedented [5+3] annulation followed by deoxygenative rearrangement leading to dihydropyridine-fused benzopyrones. Unusual electronic control by the N-substituents of 1 directs the annulation pathway, leading to two different ring-systems. nitrones - dipolar

  通过将膦加至乙炔二羧酸酯而生成的N-苯基-C-苯甲酰基硝酮1和烯丙酸酯两性离子2经历级联反应序列，该序列涉及前所未有的[5 + 3]环氧化，然后进行脱氧重排，生成二氢吡啶键合的苯并吡喃酮。N取代基1的异常电子控制会引导环空路径，从而导致两个不同的环系统。 硝酮-偶极环加成-乙炔羧酸酯-级联反应-两性离子
• Amine-Controlled Reduction of 2-Aminochromone-3-Carbaldehyde with Zn and Acetic Acid
  作者：Pritam Biswas、Jaydip Ghosh、Tapas Sarkar、Chandrakanta Bandyopadhyay

  DOI：10.3184/174751915x14477880702453

  日期：2015.12

  On heating with zinc in acetic acid 2-(N-arylamino)chromone-3-carbaldehydes produce 2-(N-arylamino)-3-methylchromones, whereas 2-(N-alkylamino)chromone-3-carbaldehydes produce 4-hydroxy-3-methylcoumarin in moderate yields. Reduction of an aldehyde function to a methyl group has been achieved under very mild reaction conditions.

  在乙酸中用锌加热 2-(N-芳基氨基)铬酮-3-羰基醛，可生成 2-(N-芳基氨基)-3-甲基香豆素，而 2-(N-烷基氨基)铬酮-3-羰基醛则可生成 4-羟基-3-甲基香豆素，产量适中。在非常温和的反应条件下，醛基还原成了甲基。
• A one-pot synthesis of 3,3′-methylenebis(2-arylamino-4H-chromen-4-one) from C-(4-oxo-4H-1-benzopyran-3-yl)-N-arylnitrone
  作者：Sourav Maiti、Suman Kalyan Panja、Chandrakanta Bandyopadhyay

  DOI：10.1016/j.tetlet.2009.04.087

  日期：2009.7

  2-(Arylamino)-4-oxo-4H-chromene-3-carbaldehyde 3 (R2 = aryl) produces 12H-chromeno[2,3-b]quinolin-12-one 4 when treated with sarcosine, piperidine or diethylamine, but produces 3,3′-methylenebis(2-arylamino-4H-chromen-4-one) 8 when treated with the same amine in the presence of an excess of formaldehyde. Compound 3 (R2 = alkyl) was found to be less reactive than the N-aryl analogues towards the deformylative

  2-（芳基氨基）-4-氧代-4- ħ色烯-3-甲醛3（R 2  =芳基）产生12 ħ -chromeno [2,3- b ]喹啉-12-酮4当与肌氨酸，哌啶处理或二乙胺，但是当在过量甲醛存在下用相同的胺处理时，会生成3,3'-亚甲基双（2-芳基氨基-4 H-铬-4--4-酮）8。发现化合物3（R 2  ＝烷基）对N型芳基类似物的反应性低于N-芳基类似物。
• Rearrangements of N-alkyl-/aryl-nitrones derived from 4-oxo-4H-1-benzopyran-3-carboxaldehyde––a solvent-dependent process
  作者：Tarun Ghosh、Chandrakanta Bandyopadhyay

  DOI：10.1016/j.tetlet.2004.06.033

  日期：2004.8

  C-(4-Oxo-4H-1-benzopyran-3-yl)-N-alkyl-/aryl-nitrones derived from 4-oxo-4H-1-benzopyran-3-carboxaldehyde, rearrange to 2-alkyl-/aryl-amino-3-formylchromone and/or 3-(alkyl-/aryl-aminomethylene)chroman-2,4-dione depending upon the reaction medium. 3-(Alkylaminomethylene)chroman-2,4-dione has been utilized in the synthesis of 1-benzopyrano[3,4-d]isoxazole-4-one. (C) 2004 Elsevier Ltd. All rights reserved.