Trifluoroacetic acid → HCID 86727513, compound

Participants

Reaction Steps

To a solution of 3-methyl-3-[(R)-1-((R)-4-methyl-3-oxo-7-trifluoromethyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-yl)-ethyl]-azetidine-1-carboxylic acid tert-butyl ester (diastereomer 1, 0.062 g, 0.128 mmol) in DCM (4 mL) was added TFA (1 mL) and the reaction mixture was stirred at ambient temperature for 1.5 h. The solvent was removed in vacuo to give (R)-4-methyl-6-[(R)-1-(3-methyl-azetidin-3-yl)-ethyl]-7-trifluoromethyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid (Example #147-1, Enantiomer 1, 0.060 g, 94%) as a solid. 1H NMR (CD3OD-d4, 400 MHz): δ 7.46 (s, 1H), 7 (s, 1H), 4.95 (m, 1H), 4.70 (d, J=13.2 Hz, 2H), 4.3 (d, J=10.8 Hz, 1H), 3.95 (d, J=10.8 Hz, 1H), 3.65 (t, J=10.0 Hz, 2H), 3.26 (m, 1H), 1.55 (s, 3H), 1.49 (d, J=7.2 Hz, 3H), 1.44 (d, J=7.2 Hz, 3H). LC/MS (Table 1, Method 4) Rt=1.741 min; MS m/z: 383 [M+H]+. SFC (Table 1, Method 36) Rt=4.264 min.

Provenance & Evidence