Water → tert-Butyl(+/-)-cyclopentyl{4-[(3-oxo-1,3-dihydro-2H-indazol-2-yl)methyl]phenyl}acetate

Participants

Reaction Steps

At 0° C., 170.9 mg (1.27 mmol) of 1,2-dihydro-3H-indazol-3-one were added to 50.9 mg (1.27 mmol, 60% pure) of sodium hydride in 1.8 ml of DMF. The mixture was stirred for 30 min, and 500 mg (1.06 mmol) of tert-butyl(+/−)-[4-(bromomethyl)phenyl](cyclopentyl)acetate were then added at 0° C. The reaction mixture was stirred for a further 30 min, and water and ethyl acetate were then added. The organic phase was washed with saturated sodium chloride solution and dried over magnesium sulfate. The crude product was purified by preparative RP-HPLC (mobile phase: acetonitrile/water gradient). This gave 217 mg (50.3% of theory) of the target compound.

Provenance & Evidence