Potassium Phosphate, Tribasic → HCID 53629173, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-[(6-bromo-2-phenylpyrazolo[1,5-a]pyrimidin-3-yl)methyl]-4-propylpyrrolidin-2-one 186 (24 mmol, 1 eq, 10 g) in 100 ml of water are added successively palladium on activated carbon (10%, 1.2 mmol, 0.05 eq, 1.2 g) and K3PO4 (48 mmol, 2 eq, 10.25 g). The mixture is degassed and stirred vigorously at 130° C. for 8 hours. After cooling to room temperature, the reaction mixture is filtered on celite and a 5 N hydrochloric acid solution (10 ml) is added (until pH 7). The water is removed under reduce pressure and the crude is triturated with hot THF. After filtration and evaporation of THF, 1-[(6-hydroxy-2-phenyl pyrazolo[1,5-a]pyrimidin-3-yl)methyl]-4-propylpyrrolidin-2-one x149 is obtained (1.9 g).

Provenance & Evidence