2-(difluoromethyl)-6-methoxychromone | 156909-15-8

• 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: 2-(difluoromethyl)-6-methoxychromone
• 英文别名: 2-(difluoromethyl)-6-methoxychromen-4-one
• CAS: 156909-15-8
• 化学式: C₁₁H₈F₂O₃
• mdl: MFCD00760796
• 分子量: 226.18
• InChiKey: DNGHJXOJQWESRZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2-(difluoromethyl)-6-methoxychromone 在 盐酸 、 四甲基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 24.25h， 生成 2-(difluoromethyl)-6-methoxy-2-(trifluoromethyl)chroman-4-one
  参考文献：
  名称：

  Regioselective Nucleophilic 1,4-Trifluoromethylation of 2-Polyfluoroalkylchromones with (Trifluoromethyl)trimethylsilane. Synthesis of Fluorinated Analogs of Natural 2,2-Dimethylchroman-4-ones and 2,2-Dimethylchromenes

  摘要：

  Reactions of 2-polyfluoroalkylchromones with (perfluoroalkyl)trimethylsilanes proceed as a 1,4-nucleophilic perfluoroalkylation to give 2,2-bis(polyfluoroalkyl)chroman-4-ones with high regioselectivity and good yields after acid hydrolysis. Oxidation of 6-methyl-2,2-bis(trifluoromethyl)chroman-4-one with a mixture of K2S2O8 and CuSO4 in aqueous acetonitrile leads to fluorinated analogues of natural lactarochromal and the corresponding acid. Reduction of substituted 2,2-bis(trifluoromethyl)chroman-4-one with sodium borohydride in methanol and subsequent dehydration of chromanols in refluxing xylene in the presence of p-toluene sulfonic acid gives 2,2-bis(trifluoromethyl)chromenes, which are fluorinated analogues of natural precocenes.

  DOI：

  10.1021/jo034591y
• 作为产物：
  描述：

  4,4-difluoro-3-(4-methoxyphenoxy)-2-butenoic acid 在 硫酸 作用下， 反应 1.0h， 生成 2-(difluoromethyl)-6-methoxychromone
  参考文献：
  名称：

  2-聚氟烷基化硫代色酮和色酮的合成

  摘要：

  通过3-（芳硫基）-（2）和3的Z异构体的分子内Friedel-Crafts酰化反应，已经以良好的至极好的产率合成了许多2-（多氟烷基）-硫代色酮（4）和-色酮（5）。-（（芳氧基）多氟-2-链烯酸（3），可以通过将芳硫醇和苯酚的迈克尔加成到多氟-2-链烷酸R f -CC-COOH（1a，R f = CHF 2）来制备; 1b，R f = CF 3 ; 1c，R f = CHF 2 CF 2 CF2）。

  DOI：

  10.1016/0022-1139(93)02979-o

文献信息

• Reactions of 2-polyfluoroalkylchromones with aliphatic diamines
  作者：V. Ya. Sosnovskikh、V. A. Kutsenko

  DOI：10.1007/bf02496279

  日期：1999.4

  Abstract2-Polyfluoroalkylchromones react with aliphatic 1,2-diamines to give 2,3-dihydro-1H-1,4-diazepines. A similar reaction with 1,3-diaminopropane yieldsN,N′-trimethylenebis(2-hydroxyacetophenomines) as a result of scission of the original chromones.

  摘要 2-多氟烷基色酮与脂肪族 1,2-二胺反应生​​成 2,3-二氢-1H-1,4-二氮杂。由于原始色酮的断裂，与 1,3-二氨基丙烷的类似反应产生 N,N'-三亚甲基双（2-羟基苯乙胺）。
• ——
  作者：V. Ya. Sosnovskikh、I. I. Vorontsov、V. A. Kutsenko

  DOI：10.1023/a:1012793208952

  日期：——

  2-Polyfluoroalkylchromones reacted with diethylenetriamine at similar to20 degreesC to form the corresponding 1,4,8-triazabicyclo[5.3.0]dec-4-ene derivatives. The crystal structures of 5-(2-hydroxyphenyl)-7-trifluoromethyl-1,4,8-triazabicyclo[5.3.0]dec-4-ene and 1-(2-aminoethyl)-7-(2-hydroxy-5-methoxyphenyl)-5-(1,1,2,2-tetrafluoroethyl)-2,3-dihydro-1H-1,4-diazepine were established by X-ray diffraction analysis.
• Regioselective Nucleophilic 1,4-Trifluoromethylation of 2-Polyfluoroalkylchromones with (Trifluoromethyl)trimethylsilane. Synthesis of Fluorinated Analogs of Natural 2,2-Dimethylchroman-4-ones and 2,2-Dimethylchromenes
  作者：Vyacheslav Ya. Sosnovskikh、Boris I. Usachev、Dmitri V. Sevenard、Gerd-Volker Röschenthaler

  DOI：10.1021/jo034591y

  日期：2003.10.1

  Reactions of 2-polyfluoroalkylchromones with (perfluoroalkyl)trimethylsilanes proceed as a 1,4-nucleophilic perfluoroalkylation to give 2,2-bis(polyfluoroalkyl)chroman-4-ones with high regioselectivity and good yields after acid hydrolysis. Oxidation of 6-methyl-2,2-bis(trifluoromethyl)chroman-4-one with a mixture of K2S2O8 and CuSO4 in aqueous acetonitrile leads to fluorinated analogues of natural lactarochromal and the corresponding acid. Reduction of substituted 2,2-bis(trifluoromethyl)chroman-4-one with sodium borohydride in methanol and subsequent dehydration of chromanols in refluxing xylene in the presence of p-toluene sulfonic acid gives 2,2-bis(trifluoromethyl)chromenes, which are fluorinated analogues of natural precocenes.
• Synthesis of 2-polyfluoroalkylated thiochromones and chromones
  作者：Kazushige Tamura、Takashi Ishihara、Hiroki Yamanaka

  DOI：10.1016/0022-1139(93)02979-o

  日期：1994.7

  to excellent yield by an intramolecular Friedel-Crafts acylation of the Z isomers of 3-(arylthio)- (2) and 3-(aryloxy)polyfluoro-2-alkenoic acids (3), which were readily prepared through the Michael addition of arenethiols and phenols to polyfluoro-2-alkynoic acids, Rf-CC-COOH (1a, Rf=CHF2; 1b, Rf=CF3; 1c, Rf=CHF2CF2CF2), respectively.

  通过3-（芳硫基）-（2）和3的Z异构体的分子内Friedel-Crafts酰化反应，已经以良好的至极好的产率合成了许多2-（多氟烷基）-硫代色酮（4）和-色酮（5）。-（（芳氧基）多氟-2-链烯酸（3），可以通过将芳硫醇和苯酚的迈克尔加成到多氟-2-链烷酸R f -CC-COOH（1a，R f = CHF 2）来制备; 1b，R f = CF 3 ; 1c，R f = CHF 2 CF 2 CF2）。