Sodium Carbonate → 4-[6-(4-Cyano-phenyl)-2-oxo-2,3-dihydro-indol-1-ylmethyl]-N,N-dimethyl-benzenesulfonamide

Participants

Reaction Conditions

Reaction Steps

4-(6-Bromo-2-oxo-2,3-dihydro-indol-1-ylmethyl)-N,N-dimethyl-benzenesulfonamide (1.60 g, 4.24 mmol) and tetrakis(triphenylphosphine)palladium (0) (195 mg, 0.17 mmol) were dissolved in a solution of 25 ml of toluene and 4 ml of EtOH under an atmosphere of dry N2. To the reaction mixture was added a solution of aqueous sodium carbonate (Na2CO3) (1.03 g, 9.75 mmol) dissolved in 6 ml of water followed by 4-cyanobenzene boronic acid (1.55 g, 10.6 mmol). The reaction mixture was heated to 100° C. and stirred at this temperature overnight. The reaction mixture was concentrated under vacuum and then partitioned between DCM and saturated aqueous NaHCO3. The DCM layer was dried over MgSO4, filtered and concentrated under vacuum to give a brown oil. The brown oil was chromatographed on silica gel eluting with a gradient from DCM to DCM/MeOH (98:2) to give 1.15 g of the titled compound as an orange solid in 63% yield.

Provenance & Evidence