Methyl 5-(acetoxymethyl)-7-chloro-s-triazolo[1,5-a]pyrimidine-2-carboxylate → HCID 178499051、化合物
反応式
C([O:4][CH2:5][C:6]1[CH:11]=[C:10](Cl)[N:9]2[N:13]=[C:14]([C:16]([O:18][CH3:19])=[O:17])[N:15]=[C:8]2[N:7]=1)(=O)C.O.[SH2:21].[Na]>CO>[OH:4][CH2:5][C:6]1[CH:11]=[C:10]([SH:21])[N:9]2[N:13]=[C:14]([C:16]([O:18][CH3:19])=[O:17])[N:15]=[C:8]2[N:7]=1参加物
4
反応条件
- 温度
- 60 °C
実験手順
Methyl 5-(acetoxymethyl)-7-chloro-s-triazolo[1,5-a]pyrimidine-2-carboxylate (380 mg) (1.33 mmol) are dissolved in 20 ml of methanol. After the addition of 296 mg (4 mmol) of sodium hydrogen sulphide monohydrate the mixture is stirred at 60° C. for 5 hours. The reaction mixture is concentrated and brought to pH 3 with dilute aqueous hydrochloric acid. The product is filtered off under suction, washed with water/methanol and crystallized from methanol. There are obtained 290 mg of methyl 5-(hydroxymethyl)-7-mercapto-s-triazolo[1,5-a]pyrimidine-2-carboxylate as a brown powder.