Sodium Carbonate → 3-[1-(ethylsulfonyl)-4-piperidinyl]-5-[3-formyl-4,5-bis(methyloxy)phenyl]-1H-indole-7-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-[1-(ethylsulfonyl)-4-piperidinyl]-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-7-carboxamide (500 mg, 1.09 mmol) in dioxane (9.0 mL) and H2O (3.0 mL) was added sodium carbonate (690 mg, 6.51 mmol), and 5-bromo-2,3-bis(methyloxy)benzaldehyde (7.95 mg, 3.25 mmol). The reaction mixture was flushed under Argon for 10 min before addition of tetrakis(triphenylphosphine)palladium (0) (63 mg, 0.054 mmol). The reaction was then heated in a microwave at 120° C. for 30 min. All solvent was then concentrated and an aqueous wash was performed with EtOAc and H2O. The desired compound then precipitated and was filtered to give 322 mg of 3-[1-(ethylsulfonyl)-4-piperidinyl]-5-[3-formyl-4,5-bis(methyloxy)phenyl]-1H-indole-7-carboxamide (59%).

Provenance & Evidence