Hydrochloric Acid → HCID 76578003, compound

Participants

Reaction Steps

To a solution of the compound obtained in step c above (20c) (166 mg, 0.401 mmol) in DMF (5 mL) was added BOP reagent (213 mg, 0.481 mmol) at 0° C. After stirring for 30 min, HONH2×HCl (50 mg, 11.38 mmol) and N-methylmorpholine (0.15 mL, 1.34 mmol) were added. The mixture was warmed to room temperature and stirred overnight. The solvent was removed and the residue was partitioned between EtOAc and saturated NH4Cl solution. The aqueous layer was extracted with EtOAc, the organic layer was dried and concentrated. The residue was purified by silica gel column chromatography to afford the title compound as a white solid (60 mg, 35%).

Provenance & Evidence