Triethylamine → tert-butyl 4-(4-bromo-1-(2-((methylsulfonyl)oxy)ethyl)-1H-imidazol-2-yl)piperidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

Combine tert-butyl 4-(4-bromo-1-(2-hydroxyethyl)-1H-imidazol-2-yl)piperidine-1-carboxylate (3.84 g, 10.26 mmol), dichloromethane (60 mL), and triethylamine (4.29 mL, 3.0 eq). Place under nitrogen and cool to 0° C. Add methanesulfonyl chloride (0.95 mL, 1.2 eq) dropwise. After 15 minutes, quench with saturated aqueous sodium bicarbonate. Wash the organics with saturated aqueous sodium chloride. Dry the organics over anhydrous magnesium sulfate, filter, and concentrate in vacuo to give the title compound (4.45 g, 96%). MS (ES) m/z=452 [M]+.

Provenance & Evidence