tert-Butyl 4-(4-vinyl-1-(2-hydroxyethyl)-1H-imidazol-2-yl)piperidine-1-carboxylate → tert-Butyl 4-(4-ethyl-1-(2-hydroxyethyl)-1H-imidazol-2-yl)piperidine-1-carboxylate

Participants

Reaction Steps

Add 10% palladium on carbon (2.10 g) in ethanol (50 mL). Then add a solution of tert-butyl 4-(1-(2-hydroxyethyl)-4-vinyl-1H-imidazol-2-yl)piperidine-1-carboxylate (20.00 g, 62.22 mmol) in ethanol (200 mL). Cycle through nitrogen and vacuum three times, then hydrogen and vacuum three times. Allow to stir at room temperature under 1 atmosphere hydrogen. After two hours, filter through Celite®. Wash with methanol. Concentrate the filtrate in vacuo to give a light yellow solid as the title compound (20.00 g, 99%). MS (ES) m/z=324 [M]+.

Provenance & Evidence