Trifluoroacetic acid → HCID 71724591, compound

Participants

Reaction Steps

To a solution tert-butyl 3-[(2-{[(2R,5S)-7-oxo-6-(sulfooxy)-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}hydrazinyl)carbonyl]azetidine-1-carboxylate 262 (0.18 g, 0.39 mmol) in DCM (18 mL) was added trifluoroacetic acid (1.45 mL, 18.79 mmol) dropwise at 0° C. The reaction mixture was stirred for 1 h then evaporated. Ether was added to the residue and the resulting white precipitate was collected by centrifugation. The solid was triturated with a mixture of MeOH:ether (1:5, 6×) and the white solid was collected by centrifugation to give (2R,5S)—N′-(azetidin-3-ylcarbonyl)-7-oxo-6-(sulfooxy)-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide Compound 112 (Table 2) (0.04 g, 28%) as a white solid.

Provenance & Evidence