Acetic Acid → HCID 9944917, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-(4-methyl-3-oxo-3H-chromeno[4,3-c]pyrazol-2-yl)-benzonitrile (0.030 g, 0.10 mmol), acetic acid (0.4 ml), H2SO4 (0.4 ml) and water (0.4 ml) was heated at 100° C. in an oil bath for 19 h. After cooling water was added and the precipitation collected, washed with water and dried to yield 4-(4-methyl-3-oxo-3H-chromeno-[4,3-c]pyrazol-2-yl)-benzoic acid (0.029 g): 1H NMR (400 MHz, DMSO-d6) δ 8.21 (2H, d), 8.13 (1H, d), 8.01 (2H, d), 7.67-7.75 (2H, m), 7.54-7.58 (1H, m), 2.78 (3H, s); ESI MS m/z 321 (M+H+).

Provenance & Evidence