反应详情

33 g of 5-chloro-2-nitropyridin-3-ol (Example 15A; 189 mmol, 1 equivalent) and 61.6 g of caesium carbonate (189 mmol, 1 equivalent) were initially charged in 528 ml of DMF, 40.4 g of 2,6-difluorobenzyl bromide (189 mmol, 1 equivalent) were added and the mixture was stirred at RT overnight. The reaction mixture was stirred into water/1N aqueous hydrochloric acid and the solid was filtered off, washed with water and air-dried. This gave 54.9 g (97% of theory) of the title compound.

1. filtrationthe solid was filtered off
2. washwashed with water
3. customair-dried