Sulfuric Acid → 3-[4-(4-Methylpiperazin-1-yl)-phenyl]-9H-dipyrido[2,3-b;4',3'-d]pyrrole-6-carboxylic acid dimethylamide

Participants

Reaction Steps

DIPEA (14 μL, 77 μmol) was added to a solution of 3-[4-(4-methylpiperazin-1-yl)-phenyl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carboxylic acid (20.0 mg, 51.6 μmol), PyBOP (28.2 mg, 54.2 μmol) and HOBt (8.4 mg, 62 μmol) in DMF (0.6 mL). After 10 min at ambient temperature, dimethylamine hydrochloride (20.0 mg, 0.258 mmol) and DIPEA (45 μL, 0.26 mmol) were added to the reaction mixture. After 30 min the reaction mixture was acidified with 10% aqueous sulfuric acid, the solid removed by filtration and the resultant filtrate was purified by preparative HPLC (0-30% MeCN over 30 min, 35 mL/min) to afford the title compound. 1H NMR (DMSO-D6, 400 MHz): 12.40 (s, 1H), 9.03 (m, 1H), 8.92 (m, 1H), 8.89 (m, 1H), 8.55 (m, 1H), 7.75 (d, J=8.9 Hz, 2H), 7.18 (d, J=8.9 Hz, 2H), 3.97 (d, J=12.2 Hz, 2H), 3.56 (d, J=12.2 Hz, 2H), 3.21 (m, 2H), 3.08 (m, 6H), 3.02 (m, 2H), 2.98 (s, 3H). LCMS (Method D): RT=6.19 min, M+H+=415.

Provenance & Evidence