反应详情

To a solution of 4,6-dichloro-2-methoxy-pyrimidine (0.606 g, 3.38 mmol, Intermediate (4)] and 2-(2,2-difluoro-benzo[1,3]dioxol-5-yl)-ethylamine hydrochloride (0.884 g, 3.72 mmol, Intermediate (62)]) in EtOH (11 mL) is added sodium bicarbonate (0.85 g, 10.14 mmol) and heated to reflux for 4 hours. The reaction mixture is filtered and filtrate is concentrated, residue solid is washed with small amount of EtOH to yield (6-chloro-2-methoxy-pyrimidin-4-yl)-[2-(2,2-difluoro-benzo[1,3]dioxol-5-yl)-ethyl]-amine [0.918 g, 79%, Intermediate (63)] as a solid. LC/MS: MS: 344 (M+H).

1. temperatureheated
2. temperatureto reflux for 4 hours
3. filtrationThe reaction mixture is filtered
4. concentrationfiltrate is concentrated
5. washresidue solid is washed with small amount of EtOH