Dicyclohexylcarbodiimide → HCID 10354388, compound

Participants

Reaction Conditions

Reaction Steps

To 1-(tert-butoxycarbonyl)-L-proline (5.0 g) in DCM (50 ml) at 5° C. was added dicyclohexylcarbodiimide (5.22 g) and N-hydroxysuccinimide (2.91 g). The mixture was stirred at this temperature for 16 h. The solid was filtered and the filtrate cooled to 5° C. To this mixture was added triethylamine (9.80 ml) and dimethylamine hydrochloride (2.80 g). The mixture was stirred at room temperature for 2 days. H2O (50 ml) was added and the phases were separated and the organics were washed with saturated sodium carbonate (2×20 ml) and brine (20 ml). This was then dried (MgSO4) and evaporated to dryness to afford the title compound as a white solid. Yield: 6.0 g.

Provenance & Evidence