Phthalic Anhydride → 2-({3-[2-(4-Fluorophenyl)-3-(methylcarbamoyl)-2H-indazol-6-yl]phenyl}carbamoyl)benzoic acid

Participants

Reaction Conditions

Reaction Steps

To a solution of Compound (16) (10 mg, 0.03 mmol) in ACN (3 mL) was added phthalic anhydride (8.2 mg, 0.06 mmol) and the reaction mixture was heated to 70° C. and stirred for 15 h. The reaction mixture was then cooled to RT and the resulting precipitate was collected by filtration. The residue was washed with cold ACN (5 mL) to afford Compound (17) as an off-white amorphous solid (7.83 mg, 55%). ESI-MS m/z calculated for [M+H]+: 509.15; found: 509.08. 1H NMR (400 MHz, d6-DMSO) δ 13.07 (brs, 1H), 10.47 (s, 1H), 8.77-8.71 (m, 1H), 7.99-7.87 (m, 3H), 7.77-7.38 (m, 12H), 2.85 (d, J=4.5 Hz, 3H).

Provenance & Evidence