Sodium Carbonate → HCID 178502467, compound

Participants

Reaction Steps

To a solution of ((S)-1-{(2S,4S)-2-[4-(4-bromo-phenyl)-1H-imidazol-2-yl]-4-hydroxy-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester (1.8 g, 3.87 mmol) in dioxane (30 mL) and water (10 mL), 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylamine (848 mg, 3.87 mmol), sodium carbonate (820 mg, 7.74 mmol) and Pd(dppf)Cl2 (316 mg, 0.39 mmol) were added and the reaction mixture was heated at reflux for 3 h, cooled to RT, filtered and concentrated, extracted with EtOAc (50 mL), and washed with water (50 mL). The organic layer was dried over sodium sulfate, filtered, concentrated and purified by silica gel column chromatography (eluted with 1% to 3% methanol in DCM) to give the title intermediate (1.45 g, 65% yield). 1H NMR (CH3OD, 400) δ (ppm) 7.70 (m, 2H), 7.67 (m, 2H), 7.45 (m, 2H), 7.29 (s, 1H), 6.80 (d, J=6.8 Hz, 1H), 5.82 (d, J=9.2 Hz, 1H), 5.29 (d, J=8.8 Hz, 1H), 4.59 (s, 1H), 4.34 (d, J=8.8 Hz, 1H), 4.16 (d, J=8.0 Hz, 1H), 3.95-4.04 (m, 1H), 3.79-3.83 (m, 1H), 3.76 (s, 3H), 2.55-2.69 (m, 1H), 2.32 (m, 1H), 1.60-2.03 (m, 1H), 1.00 (m, 3H), 0.3-0.85 (m, 3H).

Provenance & Evidence