Potassium Phosphate, Tribasic → HCID 58464728, compound

Participants

Reaction Conditions

Reaction Steps

In a microwave reaction vessel equipped with stir bar was charged 2-(5-bromo-2-fluoro-3-methylphenyl)-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione (300 mg, 0.9 mmol), cyclopropylboronic acid (220 mg, 2.6 mmol), palladium acetate (14 mg, 0.06 mmol), S-Phos (50 mg, 0.12 mmol) and potassium phosphate (560 mg, 2.6 mmol). Degassed toluene (15 mL) was added. The reaction was heated under microwave at 120° C. for 15 min. LCMS indicated completion of the reaction. The mixture was diluted with acetonitrile and filtered through a pad of Celite and washed with copious amount of acetonitrile. The filtrate was concentrated in vacuo and the residue was absorbed on Celite from an acetone solution. The resulting powder was subjected to Isco flash chromatography eluted with 0 to 70% acetonitrile in ether to give a light yellow oil, 2-(5-cyclopropyl-2-fluoro-3-methylphenyl)-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione (167 mg, 60%).

Provenance & Evidence