反应详情

温度

80 °C

A suspension of 1-amino-6-methylpyridin-2(1H)-iminium-2,4,6-trimethylbenzenesulfonate (520 mg, crude product from the previous step, 1.61 mmol), methyl 2-chloroacetate (700 mg, 7.80 mmol) and potassium carbonate (444 mg, 3.22 mmol) in EtOH (10 m L) was stirred at 80° C. for 16 h. After cooled to room temperature, the reaction mixture was concentrated and purified by silica gel column chromatography (eluting with EtOAc in PE, a gradient from 17% to 30% v/v) to give the title compound (290 mg, yield 84%). ESI MS: m/z 182, 184 [M+H]+.

1. temperatureAfter cooled to room temperature
2. concentrationthe reaction mixture was concentrated
3. custompurified by silica gel column chromatography (
4. washeluting with EtOAc in PE