1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 86650119, compound

Participants

Reaction Steps

To a stirred solution of (1R,3S)-3-(benzyloxycarbonylamino)-2,2-dimethylcyclobutanecarboxylic acid (1.0 g) in DCM (30 ml) at 0° C. EDCI (800 mg) and HOBt (700 mg) were added, after 10 minutes N-Ethylpiperazine (800 mg) and Et3N (3 ml) were added drop wise and the reaction mass was allowed to stir at room temperature for 8 hours. After completion of the reaction (monitored by TLC), the reaction mixture was diluted with DCM and washed with water, saturated NaHCO3 solution, water, 1N HCl, water and saturated brine. The organic layer was concentrated under reduced pressure then the resulting crude was purified by silica gel column (100-200 mesh, elution 90% EtOAC in hexane) to afford the title compound as a syrup. Wt: 780 mg; Yield: 57.9%. 1H NMR and Mass complies with the required product.

Provenance & Evidence