反应详情

A solution of 1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.00 g, 4.81 mmol) and N-chlorosuccinimide (0.671 g, 5.05 mmol) in tetrahydrofuran (10 mL, 100 mmol) was stirred at 70° C. for 2 hrs. The reaction mixture was concentrated under reduced pressure and the residue was purified by combi-flash chromatography and eluted with EtOAc/hexane (10-80%). The purification afforded 1.08 g (78% yield) of the desired product as white solid.

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customthe residue was purified by combi-flash chromatography
3. washeluted with EtOAc/hexane (10-80%)
4. customThe purification