Pyruvic Acid → 2-[2-(4-Chlorophenyl)hydrazinylidene]propanoic acid
反応式
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][NH2:9])=[CH:4][CH:3]=1.[C:10]([OH:15])(=[O:14])[C:11]([CH3:13])=O>O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][N:9]=[C:11]([CH3:13])[C:10]([OH:15])=[O:14])=[CH:4][CH:3]=1参加物
4
反応条件
- 温度
- 70 °C
実験手順
75.7 g of hydrochloric salt of parachlorophenylhydrazine was dissolved into 350 ml of water. 37.2 g of pyruvic acid was added into the solution. After stirring for 30 minutes at 70° C. while heating, and then cooling, precipitated crystals were filtered out, washed, and dried. These crystals were recrystallized from isopropyl acohol to obtain 57 g of 2-(p-chlorophenylhydrazono)propionic acid having a melting point of 196° to 197° C. (decomposed).
後処理
- temperaturewhile heating
- temperaturecooling
- customprecipitated crystals
- filtrationwere filtered out
- washwashed
- customdried
- customThese crystals were recrystallized from isopropyl acohol
出典と根拠
- ORDレコード
- ord-e983d2b21ed74c50872c53dbc60acdb2
- 出典データセット
- uspto-grants-1987_02
- 特許番号
- US04640892
反応ノート
読み込み中…