Methylhydrazine → 1,3-dimethyl-4,5,6,7-tetrahydro-1H-indazol-4-one

HRID 569893

反応式

HRID 569893 の反応式
[CH3:1][NH:2][NH2:3].[C:4]([CH:7]1[C:12](=[O:13])[CH2:11][CH2:10][CH2:9][C:8]1=O)(=O)[CH3:5]>CO>[CH3:1][N:2]1[C:8]2[CH2:9][CH2:10][CH2:11][C:12](=[O:13])[C:7]=2[C:4]([CH3:5])=[N:3]1

参加物

4

反応物 2

HCID 6061MethylhydrazineHCID 1381042-Acetyl-1,3-cyclohexanedione

生成物 1

HCID 141266791,3-dimethyl-4,5,6,7-tetrahydro-1H-indazol-4-one

試薬・触媒・溶媒 1

HCID 887Methanol溶媒2 回

実験手順

A solution of 11 ml of methylhydrazine in 50 ml of methanol was added dropwise to an ice-cold solution of 30 grams of 2-acetyl-1,3-cyclohexanedione in 200 ml of methanol and the reaction mixture was heated at reflux for 90 minutes. The solvent was removed under reduced pressure and the residue was triturated in hexane and cooled to give a clammy tan solid. This crude product was recrystallized from a mixture of toluene and hexane to give 1,5,6,7-tetrahydro-1,3-dimethyl-4H-indazol-4-one as a yellow crystalline solid melting at about 82.5°-84° C.

後処理

  1. temperaturethe reaction mixture was heated
  2. temperatureat reflux for 90 minutes
  3. customThe solvent was removed under reduced pressure
  4. customthe residue was triturated in hexane
  5. temperaturecooled
  6. customto give a clammy tan solid
  7. customThis crude product was recrystallized from a mixture of toluene and hexane

出典と根拠

ORDレコード
ord-79223b7c48f14055a84d4da905beee2c
出典データセット
uspto-grants-1988_03
特許番号
US04734429

関連ノート

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