Sodium Carbonate → 3-(2-tert-butylphenyl)-1-(phenylsulfonyl)-1H-indole

Participants

Reaction Conditions

Reaction Steps

1-(Phenylsulfonyl)-1H-indol-3-ylboronic acid (150.9 mg, 0.501 mmol), 2-tert-butylphenyl trifluoromethanesulfonate (255 mg, 0.902 mmol) and tetrakis(triphenylphosphine)palladium (0) (58 mg, 0.050 mmol) are combined in a septa capped microwave vial and placed under an argon atmosphere. Degassed solutions of 2 M sodium carbonate (0.75 mL, 1.50 mmol) and of dioxane (2.5 mL) were introduced and the vial heated to 150° C. for 15 minutes in a microwave reactor. The cooled reaction mixture was diluted with water and ethyl acetate, the phases separated and the aqueous extracted twice more with ethyl acetate. The combined extracts were washed with water, brine, dried over sodium sulfate, filtered and evaporated. The residue was purified by silica gel chromatography eluting with a gradient of ethyl acetate and hexanes to give 3-(2-tert-butylphenyl)-1-(phenylsulfonyl)-1H-indole (175.8 mg, 92%) as a colorless gummy solid.

Provenance & Evidence