Dimethylformamide → HCID 131733004, compound

Participants

Reaction Conditions

Reaction Steps

Into a 100-mL round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed 7-(benzyloxy)-4-bromo-2,3-dihydro-1H-inden-1-one (520 mg, 1.64 mmol, 1.00 equiv), ethyl prop-2-enoate (825 mg, 8.24 mmol, 5.03 equiv), PdCl2 (58 mg, 0.33 mmol, 0.200 equiv), DIEA (1.06 g, 8.20 mmol, 5.00 equiv), (o-Tol)3P (201 mg, 0.66 mmol, 0.400 equiv), N,N-dimethylformamide (15 mL). The resulting solution was stirred for overnight at 90° C. in an oil bath. The reaction progress was monitored by TLC (ethyl acetate/petroleum ether=1:2). The resulting solution was diluted with 20 mL of H2O. The resulting solution was extracted with 3×15 mL of ethyl acetate and the organic extracts were combined. The resulting mixture was washed with 1×15 mL of water and 1×15 mL of aqueous saturated sodium chloride solution. The mixture was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was applied to a silica gel column, eluting with ethyl acetate/petroleum ether (1:4). This resulted in 500 mg (86%) of ethyl (2E)-3-[7-(benzyloxy)-1-oxo-2,3-dihydro-1H-inden-4-yl]prop-2-enoate as a red solid.

Provenance & Evidence