Dichloromethane → HCID 66643872, compound

Participants

Reaction Steps

To a 100 mL round bottom flask was added 5-Bromo-4-methoxy-2-benzofuran-1(3H)-one (430 mg, 1.8 mmol, 1.0 eq), potassium trifluoro(vinyl)borate (474 g, 3.5 mmol, 2.0 eq), [1,1′-bis(diphenylposphino)-ferrocene]dichloropalladium (II) complex with dichloromethane(1:1) (144 mg, 0.2 mmol, 0.1 eq) and triethylamine (493 μL, 3.5 mmol, 2.0 eq). To above mixture was added ethanol (12 mL). The flask was degassed and filled with nitrogen. The reaction was heated to reflux for 12 hr. The mixture was then diluted with EtOAc, filtered through a pad of celite and washed with brine. The organic phase was dried over Na2SO4, filtered and purified by flash column chromatography using biotage and the solvent systems (0-50% EtOAc/Hexane). The fractions containing desired product were collected and concentrated to 4-methoxy-5-vinyl-2-benzofuran-1(3H)-one.

Provenance & Evidence