反应详情

温度

60 °C

A mixture of 1-amino-3,6-dimethylpyrazin-2(1H)-iminium-2,4,6-trimethylbenzenesulfonate (2.0 g, 5.9 mmol) and NaOH (480 mg, 12 mmol) in EtOH (20 mL) was stirred at 60° C. for 1 h. Methyl 2-chloroacetate (1.34 g, 12.4 mmol) was then added slowly. The reaction mixture was refluxed for 4 h, then the solvent was removed. The product was purified by silica gel column chromatography to give 2-(chloromethyl)-5,8-dimethyl-[1,2,4]triazolo[1,5-a]pyrazine as a yellow solid (420 mg, yield 36.3%). ESI MS: m/z 197 [M+1]+.

1. temperatureThe reaction mixture was refluxed for 4 h
2. customthe solvent was removed
3. customThe product was purified by silica gel column chromatography