Sodium Carbonate → Trifluoroacetic acid

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-{3-(cyanomethyl)-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-[(1S)-2,2,2-trifluoro-1-methylethyl]pyrazine-2-carboxamide (27.0 mg, 0.0533 mmol), tert-butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate (15 mg, 0.059 mmol), tetrakis(triphenylphosphine)palladium(0) (3.1 mg, 0.0027 mmol) and sodium carbonate (17.0 mg, 0.160 mmol) in 1,4-dioxane (1.6 mL) and water (0.8 mL) under nitrogen was stirred at 100° C. overnight. The reaction mixture was filtered, and purified by RP-HPLC (pH=2 conditions) to afford the desired product as TFA salt. 1H NMR (300 MHz, CD3OD) δ 8.73 (d, J=1.4 Hz, 1H), 8.18 (d, J=0.6 Hz, 1H), 7.98 (d, J=1.4 Hz, 1H), 7.91-7.79 (m, 2H), 4.84 (m, 1H), 4.81 (d, J=10.2 Hz, 2H), 4.60 (d, J=10.2 Hz, 2H), 3.59 (s, 2H), 2.44 (s, 3H), 1.43 (d, J=7.1 Hz, 3H) ppm. LCMS cacld. for C20H21F3N9O (M+1)+: m/z=460.2. Found: 460.0.

Provenance & Evidence