1,2,3,4-tetrahydro-6-methyl-2-oxo-4-(3-ethoxy-2-hydroxyphenyl)-pyrimidine-5-carboxylic acid | 1185854-72-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 1,2,3,4-tetrahydro-6-methyl-2-oxo-4-(3-ethoxy-2-hydroxyphenyl)-pyrimidine-5-carboxylic acid
• 英文别名: 4-(3-ethoxy-2-hydroxyphenyl)-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylic acid
• CAS: 1185854-72-1
• 化学式: C₁₄H₁₆N₂O₅
• 分子量: 292.291
• InChiKey: LTOKMZKBVQFXPR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  21
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  108
• 氢给体数：
  4
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  1,2,3,4-tetrahydro-6-methyl-2-oxo-4-(3-ethoxy-2-hydroxyphenyl)-pyrimidine-5-carboxylic acid 在 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 2.33h， 以90%的产率得到7-ethoxy-4-methyl-1H-chromeno[4,3-d]pyrimidine-2,5(3H,10bH)-dione
  参考文献：
  名称：

  Synthesis of fused dihydro-pyrimido[4,3-d]coumarins using Biginelli multicomponent reaction as key step

  摘要：

  A new efficient approach for the synthesis of functionalized dihydro-pyrimido[4,3-d]coumarins is described. Use of benzyl- or tert-butyl acetoacetate and various salicyl aldehydes in typical Biginelli multicomponent reactions provides esters that can be easily deprotected to yield the corresponding hydroxy acids. Annelation of the latter leads to the target dihydro-pyrimido[4,3-d]coumarins. Formation of some unexpected oxo-bridged tetrahydro-pyrimidines is also described. Spectral properties of the synthesized dihydro-pyrimido[4,3-d]coumarins indicate the necessity to revisit some compounds previously reported as products of direct one-pot Biginelli condensation involving 4-hydroxycoumarin as dicarbonyl component. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2009.05.088
• 作为产物：
  描述：

  6-methyl-4-(3-ethoxy-2-hydroxyphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid benzyl ester 在 10% palladium on activated carbon 、 甲酸铵 作用下， 以 甲醇 为溶剂， 反应 4.0h， 以90%的产率得到1,2,3,4-tetrahydro-6-methyl-2-oxo-4-(3-ethoxy-2-hydroxyphenyl)-pyrimidine-5-carboxylic acid
  参考文献：
  名称：

  Synthesis of fused dihydro-pyrimido[4,3-d]coumarins using Biginelli multicomponent reaction as key step

  摘要：

  A new efficient approach for the synthesis of functionalized dihydro-pyrimido[4,3-d]coumarins is described. Use of benzyl- or tert-butyl acetoacetate and various salicyl aldehydes in typical Biginelli multicomponent reactions provides esters that can be easily deprotected to yield the corresponding hydroxy acids. Annelation of the latter leads to the target dihydro-pyrimido[4,3-d]coumarins. Formation of some unexpected oxo-bridged tetrahydro-pyrimidines is also described. Spectral properties of the synthesized dihydro-pyrimido[4,3-d]coumarins indicate the necessity to revisit some compounds previously reported as products of direct one-pot Biginelli condensation involving 4-hydroxycoumarin as dicarbonyl component. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2009.05.088

文献信息

• Synthesis of fused dihydro-pyrimido[4,3-d]coumarins using Biginelli multicomponent reaction as key step
  作者：Mihaela Matache、Cristian Dobrota、Niculina D. Bogdan、Ioana Dumitru、Lavinia L. Ruta、Codruta C. Paraschivescu、Ileana C. Farcasanu、Ion Baciu、Daniel P. Funeriu

  DOI：10.1016/j.tet.2009.05.088

  日期：2009.8

  A new efficient approach for the synthesis of functionalized dihydro-pyrimido[4,3-d]coumarins is described. Use of benzyl- or tert-butyl acetoacetate and various salicyl aldehydes in typical Biginelli multicomponent reactions provides esters that can be easily deprotected to yield the corresponding hydroxy acids. Annelation of the latter leads to the target dihydro-pyrimido[4,3-d]coumarins. Formation of some unexpected oxo-bridged tetrahydro-pyrimidines is also described. Spectral properties of the synthesized dihydro-pyrimido[4,3-d]coumarins indicate the necessity to revisit some compounds previously reported as products of direct one-pot Biginelli condensation involving 4-hydroxycoumarin as dicarbonyl component. (C) 2009 Elsevier Ltd. All rights reserved.