Trifluoroacetic acid → 4-Methyl-6-(3-methyl-azetidin-3-ylamino)-7-trifluoromethyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid

Participants

Reaction Steps

A solution of 3-methyl-3-(4-methyl-3-oxo-7-trifluoromethyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (0.010 g, 0.021 mmol) in DCM (1 mL) and TFA (0.25 mL) was stirred for 1 h at ambient temperature. The solvent was removed in vacuo and the residue was purified by preparative HPLC (Table 3, Method 10) to give 4-methyl-6-(3-methyl-azetidin-3-ylamino)-7-trifluoromethyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid as a white solid (0.0045 g, 44%). LC/MS (Table 1, Method 4) Rt=1.441 min; MS m/z: 370 [M+H]+.

Provenance & Evidence