Potassium Carbonate → 5-(4-chloro-2-(1-methyl-1H-pyrazol-5-yl)phenyl)-N-(1,2,4-thiadiazol-5-yl)naphthalene-2-sulfonamide

Participants

Reaction Conditions

Reaction Steps

A pressure vessel was charged with 5-(2-bromo-4-chlorophenyl)-N-(1,2,4-thiadiazol-5-yl)naphthalene-2-sulfonamide (80 mg, 0.166 mmol), potassium carbonate (115 mg, 0.832 mmol), (1-methyl-1H-pyrazol-5-yl)boronic acid (84 mg, 0.666 mmol), tetrakis(triphenylphosphine)palladium(0) (19.23 mg, 0.017 mmol), dioxane (1109 μl) and water (555 μl). The reaction was heated in a microwave at 100° C. for 30 min. The resulting mixture was concentrated and purified by reverse phase HPLC (Column: Xbridge 19×100 mm, 5 μm, Waters, Milford, Mass., Flow rate: 40 mL/min, Mobile phase: 0.1% TFA in ACN and water). The fractions containing product were dried under a vacuum to provide a white solid 5-(4-chloro-2-(1-methyl-1H-pyrazol-5-yl)phenyl)-N-(1,2,4-thiadiazol-5-yl)naphthalene-2-sulfonamide (5 mg, 0.01 mmol). 1H NMR (500 MHz, DMSO-d6) δ ppm 3.48 (s, 3H) 7.01 (s, 1H) 7.05 (d, J=1.82 Hz, 1H) 7.11 (s, 1H) 7.21 (s, 1H) 7.43 (d, J=6.41 Hz, 1H) 7.49 (d, J=8.55 Hz, 1H) 7.53-7.64 (m, 3H) 7.64-7.75 (m, 3H) 8.11 (d, J=8.23 Hz, 1H) 8.34 (s, 1H) 8.43 (d, J=1.60 Hz, 1H); m/z (ESI) 482.0 (M+H)+.

Provenance & Evidence