Benzoylhydrazine → HCID 86694028, compound

Participants

Reaction Steps

To solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.25 g, 0.90 mmol) in dry DCM (20 mL) were added benzohydrazide 181 (0.118 g, 1.35 mmol), 1-hydroxybenzotriazole (0.19 g, 1.35 mmol), 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.26 g, 1.35 mmol) and 4-(dimethylamino)pyridine (0.16 g, 1.35 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight, and then concentrated under vacuum. The residue was purified by column chromatography to give (2R,5R)-6-(benzyloxy)-7-oxo-N′-(phenylcarbonyl)-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide 182 (0.35 g, 98%) as a white solid.

Provenance & Evidence