Trifluoroacetic acid → HCID 44156640, compound

Participants

Reaction Steps

To a solution of 2 [3-(1-methyl-2-oxo-1,2,3,5-tetrahydro-benzo[e][1,4]diazepin-4-yl)-3-oxo-(R)-1-(2,4,5-trifluoro-benzyl)-propyl]-carbamic acid tart-butyl ester (90 mg 0.18 mmol) in dry DCM (5 mL), was added trifluoroacetic acid (0.55 mL, 3 mL/mmol). The reaction mixture was stirred at r.t. for 1 h. After completion of the reaction, as confirmed by TLC, excess of TFA and DCM were evaporated in vacuo to afford a gummy solid which was crystallised from hexane to afford trifluoroacetic acid salt of 4-[(R)-3-amino-4-(2,4,5-trifluorophenyl)-butyryl]-1-methyl-1,3,4,5-tetrahydro-benzo[e][1,4]diazepin-2-one (70 mg, 76%) as a white solid

Provenance & Evidence