Cesium carbonate → 5-[4-(aminomethyl)phenyl]-3-[1-(ethylsulfonyl)-4-piperidinyl]-1H-indole-7-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-bromo-3-[1-(ethylsulfonyl)-4-piperidinyl]-1H-indole-7-carboxamide (30.0 mg, 0.072 mmol), Cs2CO3 (95 mg, 0.290 mmol) and [4-(aminomethyl)phenyl boronic acid (55 mg, 0.290 mmol) in dioxane/H2O (1.5 mL/0.5 mL) was bubbled argon for 5 minutes prior to addition of Pd(PPh3)4 (7.5 mg, 0.0072 mmol). The reaction mixture was heated in a microwave reactor (Smith synthesizer) for 20 minutes at 160° C. The solvent was evaporated, and the residue was partitioned between ethyl acetate and water. The organic layer was washed with brine (10 mL), dried over MgSO4, filtered, concentrated, and purified by reverse phase HPLC (water/CH3CN, 0.1% TFA 10-90%) to give the title compound (9.8 mg, 31%).

Provenance & Evidence