Potassium Phosphate, Tribasic → HCID 59464060, compound

Participants

Reaction Conditions

Reaction Steps

Potassium phosphate (214 mg, 1.01 mmol) was added to 5-((3-iodophenyl){[2-(trimethylsilyl)ethoxy]methyl}amino)-N-(6-morpholin-4-ylpyridin-3-yl)-N-{[2-(trimethylsilyl)ethoxy]methyl}-1,3,4-oxadiazole-2-carboxamide (190 mg, 0.25 mmol) and phenylboronic acid (37 mg, 0.30 mmol) in DMF (3 mL) and the mixture was degassed. Tetrakis(triphenylphosphine)palladium (29 mg, 0.03 mmol) was added and the mixture was heated to 80° C. for 90 minutes. Phenylboronic acid (8 mg, 0.06 mmol) and tetrakis(triphenylphosphine)palladium (10 mg, 0.01 mmol) was added, the mixture degassed and heated to 80° C. for 240 minutes. The mixture was cooled, diluted with ether (60 mL) and washed with water (3×20 mL). The aqueous layers were re-extracted with ether (20 mL) and the organic layers were combined, dried and concentrated by evaporation. The residue was purified by chromatography, eluting with 0-20% ether/DCM to give the title compound (Intermediate 49, 149 mg, 84%) as a gum; 1H NMR δ 8.09 (1H, s), 7.83-7.66 (4H, m), 7.66-7.37 (6H, m), 6.86 (1H, d), 5.37 (2H, s), 5.19 (2H, s), 3.79-3.62 (8H, m), 3.55-3.49 (4H, m), 0.93 (4H, t), 0.06 (9H, s), 0.01 (9H, s).

Provenance & Evidence