Cyclohexane → HCID 72944334, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-Pyrrolidin-1-yl-2-(4-{2-[3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-pyrimidin-5-yl}-pyrazol-1-yl)-ethanone (4 mL of the solution obtained in step 1), 5-bromo-1-methyl-1H-imidazole (35 mg; 0.22 mmol; 1.0 eq.), Pd(Ph3)4 (13 mg; 0.01 mmol; 0.05 eq.) and potassium carbonate (90 mg; 0.65 mmol; 3.0 eq.) in water (0.73 mL) was heated at 120° C. in MW for 30 min. Addition of 5-bromo-1-methyl-1H-imidazole (35 mg; 0.22 mmol; 1.0 eq.) and heating at 120° C. for 30 min had to be repeated twice to complete the reaction. The reaction mixture was then diluted with water and extracted twice with EtOAc. Combined organic phases were washed with brine, dried over magnesium sulfate, filtered and concentrated. Purification by flash chromatography on silica (DCM:MeOH, gradient from 100:0 to 80:20) gave a black gum which was redissolved in DCM. Addition of cyclohexane afforded a brown precipitate which was filtered and dried under vacuum to give the title compound as a beige solid (40 mg, 44%). 1H NMR (300 MHz, DMSO-d6) δ 9.20 (s, 2H), 8.47-8.46 (m, 1H), 8.41-8.37 (m, 2H), 8.14 (d, J=0.6 Hz, 1H), 7.76 (s, 1H), 7.68-7.60 (m, 2H), 7.15 (s, 1H), 5.12 (s, 2H), 3.74 (s, 3H), 3.52 (t, J=6.8 Hz, 2H), 3.32 (t, J=6.8 Hz, 2H), 1.93 (quint., J=6.8 Hz, 2H), 1.80 (quint., J=6.8 Hz, 2H). HPLC (Condition A): Rt 2.21 min (purity 96.2%). MS (ESI+): 414.4.

Provenance & Evidence