Chlorosuccinimide → HCID 15729141、化合物
反応式
[C:1]([NH:4][C:5]1[S:6][CH:7]=[C:8]([CH2:10][OH:11])[N:9]=1)(=[O:3])[CH3:2].[Cl:12]N1C(=O)CCC1=O>C(O)(=O)C>[C:1]([NH:4][C:5]1[S:6][C:7]([Cl:12])=[C:8]([CH2:10][OH:11])[N:9]=1)(=[O:3])[CH3:2]参加物
4
反応条件
- 温度
- 40 °C
実験手順
A mixture of 2-acetylamino-4-hydroxymethylthiazole (7.0 g) and N-chlorosuccinimide (6.5 g) in acetic acid ml) was heated at 40° C. for 3.5 hours with stirring. The reaction mixture was concentrated under reduced pressure and the residue was added the aqueous sodium bicarbonate. The mixture was extracted with a mixture of ethyl acetate and tetrahydrofuran (1:1), washed with water and dried over magnesium sulfate. The solvent was concentrated under reduced pressure and the residue was triturated with isopropyl ether. The precipitates were collected by filtration, washed with isopropyl ether and dried in vacuo to give 2-acetylamino-5-chloro-4-hydroxymethylthiazole (73 g, yield: 78.5%).