Sodium Hydroxide → 4-(1-methyl-1H-pyrazol-4-yl)benzoic acid

HRID 2307349ノート

反応式

HRID 2307349 の反応式
[CH3:1][N:2]1[CH:6]=[C:5]([C:7]2[CH:12]=[CH:11][C:10]([CH3:13])=[CH:9][CH:8]=2)[CH:4]=[N:3]1.[Mn]([O-])(=O)(=O)=[O:15].[K+].[OH-:20].[Na+]>>[CH3:1][N:2]1[CH:6]=[C:5]([C:7]2[CH:12]=[CH:11][C:10]([C:13]([OH:15])=[O:20])=[CH:9][CH:8]=2)[CH:4]=[N:3]1

参加物

4

反応物 3

HCID 14798Sodium HydroxideHCID 516875Potassium PermanganateHCID 43190701-Methyl-4-(4-methylphenyl)-1H-pyrazole

生成物 1

HCID 226054524-(1-methyl-1H-pyrazol-4-yl)benzoic acid

実験手順

A mixture of 1-methyl-4-(4-methylphenyl)-1H-pyrazole (1.70 g), potassium permanganate (9.70 g), and 1 N sodium hydroxide (100 ml) was refluxed for 18 hours. The suspension was filtered through diatomaceous earth and cooled. The aqueous solution was extracted with dichloromethane which was discarded. The aqueous solution was acidified to pH 5.5. The resultant precipitate was difficult to filter and was thus extracted with dichloromethane. After evaporation of the solvent, the resulting solid was recrystallized from acetone to yield the title compound (0.60 g), m.p. 274-275° C.; MS m/z: 202 (M)+.

後処理

  1. temperaturewas refluxed for 18 hours
  2. filtrationThe suspension was filtered through diatomaceous earth
  3. temperaturecooled
  4. extractionThe aqueous solution was extracted with dichloromethane which
  5. filtrationto filter
  6. extractionwas thus extracted with dichloromethane
  7. customAfter evaporation of the solvent
  8. customthe resulting solid was recrystallized from acetone

出典と根拠

ORDレコード
ord-ff149dcc71294afc9e7b5e6aeafef8ad
出典データセット
uspto-grants-2004_12
特許番号
US06831079B1

反応ノート

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