Sodium Carbonate → 4-(3-(1H-indol-5-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridin-5-yl)benzaldehyde

Participants

Reaction Steps

Intermediate B (4.04 g) and 4-formylphenylboronic acid (1.56 g) were suspended in 150 mL of acetonitrile and treated with 150 mL of 1 M sodium carbonate solution. To this was added dichloro-bis-(triphenylphosphine)-palladium(II) (608 mg) and the mixture was heated at reflux for 2.5 hours. The reaction mixture was filtered and the residue washed with EtOAc, the filtrates were combined and washed with water, and brine, dried over MgSO4, and concentrated. MPLC silica gel chromatography eluting with 0-30% EtOAc in hexane, produced 3.77 g of the title compound (M+H 492).

Provenance & Evidence