Trifluoroacetic acid → HCID 78426341, compound

Participants

Reaction Steps

To a solution of tert-butyl 4-({[(2S,5R)-7-oxo-6-(sulfooxy)-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)piperazine-1-carboxylate 208 (0.12 g, 0.27 mmol) in DCM (12.5 mL) was added trifluoroacetic acid (1.0 mL, 12.96 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 acetonitrile (2×) and the white solid was collected by centrifugation. This white solid was purified by HPLC on a prep-X Bridge-19×250 mm column and freeze-dried to give (2S,5R)-7-oxo-N-(piperazin-1-yl)-6-(sulfooxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide Compound 100 (Table 2) (0.11 g, 88%) as a white solid.

Provenance & Evidence