Sodium Carbonate → 1,1-dimethylethyl 2-{2-[1-(2-chlorophenyl)-1-methylethyl]-1-[3'-(methylsulfonyl)biphenyl-4-yl]-1H-imidazol-4-yl}pyrrolidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl 2-(1-(4-bromophenyl)-2-(2-(2-chlorophenyl)propan-2-yl)-1H-imidazol-4-yl)pyrrolidine-1-carboxylate (20 mg, 0.036 mmol) in THF (3 mL) was added 3-(methylsulfonyl)phenylboronic acid (14.7 mg, 0.073 mmol). The resulting solution was stirred at 80-85° C. for 5 min and then tetrakistriphenylphosphine palladium (0) (5-10 mg) was added followed by the addition of 60 μL of 1.0 M sodium carbonate. The reaction was maintained at 80-85° C. for 30 min. LC/MS analysis indicated the reaction was complete. The reaction mixture was cooled and filtered over celite, concentrated. The crude product was purified by prep HPLC to give 1,1-dimethylethyl 2-{2-[1-(2-chlorophenyl)-1-methylethyl]-1-[3′-(methylsulfonyl)biphenyl-4-yl]-1H-imidazol-4-yl}pyrrolidine-1-carboxylate (10 mg, 50%). 1H NMR (CD3OD): δ 1.4 (m, 9H), 1.6 (m, 3H,), 1.8 (m, 1H), 1.9-2.3 (m, 5H), 3.2 (s, 3H), 3.4 (m, 1H), 3.6 (m, 1H) 4.6 (m, 1H), 6.9 (m, 1H), 7.0 (m, 1H), 7.2 (m, 6H), 7.7 (m, 3H), 7.95 (m, 2H), 8.2 (m, 1H); LC/MS M+H 620 (observed).

Provenance & Evidence