Cesium carbonate → HCID 67465354, compound

Participants

Reaction Conditions

Reaction Steps

To a stirring solution of 3-((6-bromo-3-(difluoromethoxy)-2-methoxyphenoxy)methyl)-3-methyloxetane (200 mg, 0.566 mmol) in dimethylformamide (10 mL) was purged with argon for 1 h. To this cesium carbonate (551 mg, 1.698 mmol), tetrakis(triphenylphosphine) palladium(0) (32 mg, 0.028 mmol) and 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one (176 mg, 0.679 mmol) were added and the resultant reaction mixture was heated to 80-90° C. for 3 h. The reaction mixture was cooled to RT, filtered and the filtrate was diluted with water and extracted with ethyl acetate (3×). The combined ethyl acetate layer was washed with brine and dried over anhydrous sodium sulphate and concentrated under reduced pressure. Purification of the residue by column chromatography (silica gel, 0-20% ethyl acetate in pet ether) afforded the title compound as a solid (50 mg, 22%).

Provenance & Evidence