反应详情

A 500 mL round bottom flask was charged with tert-butyl 4-(3-amino-5-bromopyrazin-2-yl)piperazine-1-carboxylate (4.0 g, 11.2 mmol), 2-bromo-1,1-diethoxyethane (3.3 g, 16.5 mmol) and absolute propan-2-ol (200 mL). The resulting solution was refluxed under N2 for 12 h. Work-up: the resulting crystalline solid was collected by filtration, washed with EtOAc (100 mL), and dried to afford 1.0 g (23%) of the product as a yellow solid.

1. temperatureThe resulting solution was refluxed under N2 for 12 h
2. filtrationthe resulting crystalline solid was collected by filtration
3. washwashed with EtOAc (100 mL)
4. customdried