Toluene → HCID 86698617, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 5,5-dimethyl-2-[4-(oxetan-3-yloxy)phenyl]-1,3,2-dioxaborinane (90 mg, 0.35 mmol) in ethanol (1.4 mL) was added 5-bromo-6-chloro-1H-indole-3-carbaldehyde (110 mg, 0.43 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (26 mg, 0.036 mmol), 2 M aqueous potassium carbonate (0.7 mL, 1.4 mmol) and toluene (4 mL). The mixture was degassed with N2 for 3 min and heated to 110° C. by microwave irradiation for 1 h. The mixture was concentrated in vacuo to give a residue, which was dissolved with ethyl acetate (30 mL) and washed with brine (2×10 mL). The organic layer was dried over Na2SO4 and concentrated in vacuo to give a residue, which was purified by flash chromatography on silica gel eluting with EtOAc/petroleum ether (1:10 to 1:1) to give 6-chloro-5-[4-(oxetan-3-yloxy)phenyl]-1H-indole-3-carbaldehyde (100 mg, 87%) as a colorless oil.

Provenance & Evidence