4-oxo-6-(2-thienyl)-4H-pyran-2-carboxylic acid | 1519714-05-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 4-oxo-6-(2-thienyl)-4H-pyran-2-carboxylic acid
• 英文别名: 4-oxo-6-(2-thienyl)-4H-pyrane-2-carboxylic acid；4-Oxo-6-thiophen-2-ylpyran-2-carboxylic acid；4-oxo-6-thiophen-2-ylpyran-2-carboxylic acid
• CAS: 1519714-05-6
• 化学式: C₁₀H₆O₄S
• 分子量: 222.221
• InChiKey: SVLHEIUQNACQAQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  91.8
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  4-oxo-6-(2-thienyl)-4H-pyran-2-carboxylic acid 、 邻苯二胺 以 正丁醇 为溶剂， 反应 4.0h， 以81%的产率得到(Z)-3-((4-(thien-2-yl)-1H-1,5-benzodiazepin-2(3H)-ylidene)methyl)quinoxalin-2(1H)-one
  参考文献：
  名称：

  The reaction of 6-substituted 4-pyrone-2-carboxylic acids with o-phenylenediamine. Synthesis and structure of 3-(1H-1,5-benzodiazepin-2(3Н)-ylidenemethyl)quinoxalin-2(1H)-ones

  摘要：

  [GRAPHICS]6-Aryl(alkyl)-4-pyrone-2-carboxylic acids upon refluxing in n-BuOH react with two equivalents of.-phenylenediamine, giving 26-85% yields of 3-(1H-1,5-benzodiazepin-2(3H)-ylidenemethyl)quinoxalin-2(1H)-ones, which exist in two tautomeric forms. The direction of the initial nucleophilic attack on the pyrone ring and the tautomeric composition of the obtained products is mainly determined by the substituent at the.-6 atom. Quantum-chemical calculations were used to estimate the stability of tautomers in the gas phase.

  DOI：

  10.1007/s10593-015-1696-3
• 作为产物：
  描述：

  1-(噻吩-2-基)-1,3-丁二酮 在 盐酸 、 水 、 sodium hydride 作用下， 以 四氢呋喃 、 mineral oil 、 苯 为溶剂， 反应 153.5h， 生成 4-oxo-6-(2-thienyl)-4H-pyran-2-carboxylic acid
  参考文献：
  名称：

  5-酰基-4-吡喃酮-2-羧酸乙酯和6-芳基-、6-烷基-和5-酰基椰子酸的制备合成

  摘要：

  基于 1-R-2-(二甲基-氨基亚甲基)丁烷-1的缩合，开发了一种简单有效的合成 5-烷酰基-和 5-芳酰基-4-吡喃酮-2-羧酸乙酯的方法,3-二酮，由 1,3-二酮和二甲基甲酰胺二甲基乙缩醛，在 THF 中 NaH 存在下与草酸二乙酯获得。乙基 5-acyl-4-pyrone-2-carboxylates 用于合成 6-R- 和 5-RCO-comanic 酸。

  DOI：

  10.1007/s11172-016-1574-x

文献信息

• Synthesis of 6-aryl- and 5-aroylcomanic acids from 5-aroyl-2-carbethoxy-4-pyrones via a deformylative rearrangement and ring-opening/ring-closure sequence
  作者：Dmitrii L. Obydennov、Gerd-Volker Röschenthaler、Vyacheslav Ya. Sosnovskikh

  DOI：10.1016/j.tetlet.2013.11.066

  日期：2014.1

  oxalate in the presence of sodium hydride in THF gave ethyl 5-aroyl-4-oxo-4H-pyran-2-carboxylates, from which 4-oxo-6-aryl-4H-pyran-2-carboxylic acids (6-arylcomanic acids) were obtained in high yields via acid-catalyzed deformylative rearrangement. 5-Aroyl-4-oxo-4H-pyran-2-carboxylic acids (5-aroylcomanic acids) were prepared via а ring-opening/ring-closure sequence by the reaction of 5-aroyl-2-carbethoxy-4-pyrones

  1-芳基-2-（二甲基氨基亚甲基）丁烷-1,3-二酮与草酸二乙酯在氢化钠存在下于THF中反应，得到5-芳酰基-4-氧代-4 H-吡喃-2-羧酸乙酯通过酸催化的甲酰基化重排以高收率获得了4-氧代-6-芳基-4 H-吡喃-2-羧酸（6-芳基马来酸）。通过开环/闭环顺序，通过5-芳酰基-2-碳乙氧基-4-吡喃酮的反应，制备5-芳基-4-氧代-4 H-吡喃-2-羧酸（5-芳酰基马甲酸）用哌啶随后进行碱性水解和酸化。
• Preparative synthesis of ethyl 5-acyl-4-pyrone-2-carboxylates and 6-aryl-, 6-alkyl-, and 5-acylcomanic acids on their basis
  作者：D. L. Obydennov、A. O. Goncharov、V. Ya. Sosnovskikh

  DOI：10.1007/s11172-016-1574-x

  日期：2016.9

  A simple and efficient method for the synthesis of ethyl 5-alkanoyl- and 5-aroyl-4-pyrone-2-carboxylates was developed, which is based on the condensation of 1-R-2-(dimethyl-aminomethylidene)butane-1,3-diones, obtained from 1,3-diketones and dimethylformamide dimethyl acetal, with diethyl oxalate in the presence of NaH in THF. Ethyl 5-acyl-4-pyrone-2-carboxylates were used in the synthesis of 6-R-

  基于 1-R-2-(二甲基-氨基亚甲基)丁烷-1的缩合，开发了一种简单有效的合成 5-烷酰基-和 5-芳酰基-4-吡喃酮-2-羧酸乙酯的方法,3-二酮，由 1,3-二酮和二甲基甲酰胺二甲基乙缩醛，在 THF 中 NaH 存在下与草酸二乙酯获得。乙基 5-acyl-4-pyrone-2-carboxylates 用于合成 6-R- 和 5-RCO-comanic 酸。
• The reaction of 6-substituted 4-pyrone-2-carboxylic acids with o-phenylenediamine. Synthesis and structure of 3-(1H-1,5-benzodiazepin-2(3Н)-ylidenemethyl)quinoxalin-2(1H)-ones
  作者：Dmitrii L. Obydennov、Vyacheslav Ya. Sosnovskikh

  DOI：10.1007/s10593-015-1696-3

  日期：2015.3

  [GRAPHICS]6-Aryl(alkyl)-4-pyrone-2-carboxylic acids upon refluxing in n-BuOH react with two equivalents of.-phenylenediamine, giving 26-85% yields of 3-(1H-1,5-benzodiazepin-2(3H)-ylidenemethyl)quinoxalin-2(1H)-ones, which exist in two tautomeric forms. The direction of the initial nucleophilic attack on the pyrone ring and the tautomeric composition of the obtained products is mainly determined by the substituent at the.-6 atom. Quantum-chemical calculations were used to estimate the stability of tautomers in the gas phase.