Water → HCID 67463152, compound

Participants

Reaction Conditions

Reaction Steps

A stirring solution of 1-bromo-3-(cyclopropylmethoxy)-4-methoxy-2-(methoxymethoxy)benzene (3 g, 9.46 mmol) in dimethylformamide (50 mL) was purged with argon for 1 h, to this cesium carbonate (9.23 g, 28.39 mmol), water (3 mL), tetrakis(triphenylphosphine) palladium(0) (546 mg, 0.472 mmol) and 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isobenzofuran-1(3H)-one (2.96 g, 11.47 mmol) were added and the resultant reaction mixture was heated to 80° C. for 5 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 layers were washed with brine, 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 5-(3-(Cyclopropylmethoxy)-4-methoxy-2-(methoxymethoxy)phenyl)isobenzofuran-1(3H)-one as a solid (1.8 g, 51%).

Provenance & Evidence