1-Hydroxybenzotriazole → HCID 86694003, compound

Participants

Reaction Steps

To a mixture of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.250 g, 0.905 mmol) in DCM (10.0 mL) were added tert-butyl 4-(aminooxy)-1-methyl-1,4,5,7-tetrahydro-6H-pyrazolo[3,4-c]pyridine-6-carboxylate 137 (0.360 g, 1.358 mmol), 1-hydroxybenzotriazole (0.183 g, 1.358 mmol) and 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride (0.260 g, 1.358 mmol) sequentially at room temperature. The mixture was stirred at room temperature overnight, diluted with DCM and concentrated to provide a residue which was subjected to chromatography to give 138 (0.42 g, 89%) as a white foam.

Provenance & Evidence