反应详情

3.0 mL trifluoroacetic anhydride were added dropwise at 10° C. to 2.6 g (12 mmol) 5-bromo-4-chloro-2-methylpyridine-1-oxide in 30 mL DCM. The reaction mixture was stirred for 5 days at RT. After the addition of MeOH the reaction mixture was evaporated down, the residue was combined with 15% potassium carbonate solution and extracted several times with EtOAC. The combined organic phases were dried on sodium sulphate and evaporated down.

1. customwas evaporated down
2. extractionextracted several times with EtOAC
3. customThe combined organic phases were dried on sodium sulphate
4. customevaporated down