反应详情

A solution of (5-chloro-6-(difluoromethoxy)pyridin-3-yl)methanol (1.000 g; 4.77 mmol) in anh. DCM (40 ml) was treated with MnO2 (6.222 g; 71.57 mmol), and the resulting mixture was stirred at rt, under nitrogen, for 3 h. The resulting reaction mixture was then filtered over celite, and the separated solids were washed with DCM. The filtrate was concentrated to dryness under reduced pressure giving 5-chloro-6-(difluoromethoxy)nicotinaldehyde as a yellow oil. LC-MS (conditions A): tR=0.72 min.; no ionisation.

1. customThe resulting reaction mixture
2. filtrationwas then filtered over celite
3. washthe separated solids were washed with DCM
4. concentrationThe filtrate was concentrated to dryness under reduced pressure