Trifluoroacetic acid → HCID 68769883, compound

Participants

Reaction Steps

To a solution of 4-[5-Bromo-1-(4-methoxy-naphthalene-1-sulfonyl)-1H-indole-3-carbonyl]-[1,4]diazepane-1-carboxylic acid tert-butyl ester (A) (45 mg, 0.07 mmol) in dichloromethane (5 cm3) was added trifluoroacetic acid (2 cm3). The solution was shaken at room temperature for 1 h before the solvent was removed under reduced pressure. The residue was dissolved in N,N-dimethylformamide (DMF) (1 cm3) and purified using reverse phase HPLC (Agilent Technologies, CombiHT SB-C18, Preparative cartridge 21.2×100 mm, 5-micron) using a linear gradient of water (0.1% trifluoroacetic acid)/acetonitrile (0.1% trifluoroacetic acid). The desired peak was then evaporated under reduced pressure to afford the title compound (83) (45.9 mg, 27%). Positive ion APCI (M+H)+ 543.4.

Provenance & Evidence