Trifluoroacetic acid → HCID 66716780, compound

Participants

Reaction Conditions

Reaction Steps

In a 20 mL scintillation vial was added tert-butyl 4-((2-methyl-3-oxo-8-propyl-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)methyl)piperazine-1-carboxylate 358D (90 mg, 0.223 mmol) and TFA (2.0 mL, 26.0 mmol) in DCM (2.0 mL) and stirred at 23° C. for 1 h. The reaction was concentrated in vacuo, taken up in MeOH, and filtered through a PL-HCO3 MP resin column to give the free base. The MeOH filtrate was concentrated in vacuo to give the title compound as a yellow solid (68 mg, 0.224 mmol, 100% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 0.88 (t, J=7.33 Hz, 3H) 1.38 (d, J=6.82 Hz, 3H) 1.53 (dt, 2H) 2.43-2.49 (m, 4H) 2.52 (br. s., 2H) 3.00 (d, J=4.29 Hz, 4H) 3.33 (br. s., 1H) 3.39 (s, 2H) 4.60 (q, J=6.74 Hz, 1H) 6.63-6.76 (m, 2H) 10.58 (s, 1H). ESI-MS: m/z 304.3 (M+H)+.

Provenance & Evidence