Potassium Carbonate → Methyl 6-bromo-5-(2'-hydroxybiphenyl-4-yl)-1H-indole-3-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 6-bromo-5-iodo-1H-indole-3-carboxylate (100 mg, 0.26 mmol) in toluene (1 ml) and ethanol (1 ml) was added 4′-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)biphenyl-2-ol (70 mg, 0.24 mmol) followed by aqueous potassium carbonate (2 M, 1 ml, 2.0 mmol). The solvent was degassed by passing nitrogen through the system for 5 min. Pd(dppf)Cl2 (10 mg, 0.0053 mmol) was added then sealed and reaction heated to 110° C. The reaction was cooled then partitioned between water and ethyl acetate, then washed with brine, dried over sodium sulfate, filtered, concentrated in vacuo to afford the title compound mixed with unidentified byproducts as a dark tan solid (120 mg). TLC (50% EtOAc/Heptane) indicates no separation between product and byproducts. Crude was taken on to the next step without purification.

Provenance & Evidence