Phosphorus oxychloride → 2-Pyridone

HRID 1385954ノート

反応式

HRID 1385954 の反応式
ClC1C=CC([CH:8]2[C:13](=[O:14])[CH:12]=[C:11](C(F)(F)F)[N:10](C)[C:9]2=[O:20])=CC=1.P(Cl)(Cl)(Cl)=O>CCN(C1C=CC=CC=1)CC>[NH:10]1[CH:11]=[CH:12][CH:13]=[CH:8][C:9]1=[O:20].[N:10]1[CH:9]=[CH:8][C:13](=[O:14])[CH2:12][CH:11]=1

参加物

5

反応物 2

HCID 24813Phosphorus oxychlorideHCID 184083273-(4-Chlorophenyl)-2,4-dioxo-1-methyl-6-trifluoromethyl-1,2,3,4-tetrahydropyridine

生成物 2

HCID 88712-Pyridone収率 37%HCID 17984897Piridin-4-one収率 29%

試薬・触媒・溶媒 1

HCID 7061N,N-Diethylaniline溶媒

反応条件

温度
110 °C

実験手順

3.3 g (10.9 mmol) of 3-(4-chlorophenyl)-2,4-dioxo-1-methyl-6-trifluoromethyl-1,2,3,4-tetrahydropyridine was added to 8.3 g (42.3 mmol) of phosphorus oxychloride and 30 ml of diethylaniline, followed by stirring at from 100 to 120° C. for 4 hours. The reaction solution was distilled off under reduced pressure, and ethyl acetate was added to the obtained residue, followed by washing with water and a saturated sodium hydrogencarbonate aqueous solution. The organic layer was dried over anhydrous magnesium sulfate. The organic layer was distilled off under reduced pressure, and the obtained residue was separated and purified by high performance liquid chromatography to obtain 1.3 g (yield: 37%) of the desired 2-pyridone compound (Compound No. 11-1) and 1.0 g (yield: 29%) of the 4-pyridone compound (Compound No. 13-1), respectively.

後処理

  1. distillationThe reaction solution was distilled off under reduced pressure, and ethyl acetate
  2. additionwas added to the obtained residue
  3. washby washing with water
  4. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  5. distillationThe organic layer was distilled off under reduced pressure
  6. customthe obtained residue was separated
  7. custompurified by high performance liquid chromatography

出典と根拠

ORDレコード
ord-dbf87c2a269d422c905fd4c84321c377
出典データセット
uspto-grants-2001_07
特許番号
US06265349B1

反応ノート

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