Sodium Carbonate → HCID 89662101, compound

Participants

Reaction Conditions

Reaction Steps

2.57 g of methyl 1-benzyl-5-{[(trifluoromethyl)sulfonyl]oxy}-1H-pyrazole-3-carboxylate (7.06 mmol, 1.0 eq.) were dissolved in 51 mL of dry 1,2-dimethoxyethane under nitrogen atmosphere. 1.52 g of cyclopropylboronic acid (17.6 mmol, 2.5 eq.), 2.62 g of sodium carbonate (24.7 mmol, 3.5 eq.) and 408 mg of tetrakis(triphenylphosphin)palladium(0) (0.353 mmol, 0.05 eq.) were added and the mixture was stirred for 24 hours at 75° C. bath temperature. Then the mixture was filtered off and washed with ethyl acetate. The filtrate was concentrated in vacuo and the residue purified by flash chromatography to give 1.61 g (5.39 mmol, 76%) of analytically pure target compound.

Provenance & Evidence