Trifluoroacetic acid → HCID 86727455, compound

Participants

Reaction Steps

To a solution of (2S,4R)-tert-butyl 2-benzyl-4-((R)-1-methyl-2-oxo-1,2,3,5-tetrahydrobenzo[5,6][1,4]oxazino[3,4-c][1,2,4]triazin-9-yl)piperidine-1-carboxylate (0.190 g, 0.387 mmol) in DCM (3 mL) was added TFA (1 mL) and the mixture was stirred at ambient temperature for 1 h. The solvent was removed in vacuo and EtOAc (2 mL) was added to the residue. The precipitate was collected by filtration and washed with EtOAc (1 mL) and petroleum ether (2 mL) to give (R)-9-((2S,4R)-2-benzylpiperidin-4-yl)-1-methyl-3,5-dihydrobenzo[5,6][1,4]oxazino[3,4-c][1,2,4]triazin-2(1H)-one trifluoroacetic acid (Example #109-2, Enantiomer 2, SFC (Table 1, Method 21) Rt=4.521 min, 0.190 g, 97%) as a solid. LC/MS (Table 1, Method 4) Rt=1.617 min; MS m/z: 391 [M+H]+.

Provenance & Evidence