1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → {4-[3-(1H-indol-5-yl)-1H-pyrrolo[2,3-b]pyridin-5-yl]-phenyl}-(4-methyl-piperazin-1-yl)-methanone

Participants

Reaction Conditions

Reaction Steps

4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzoic acid (100 mg, 0.403 mmol), EDCI (97 mg, 0.504 mmol) and DMAP (catalytic amount) were combined in CH3CN, stirred for 10 min and treated with N-methylpiperazine (54 μl, 0.484 mmol). The mixture was stirred overnight at room temperature. An aliquot of 650 μl was taken, combined with Intermediate B (50 mg, 0.107 mmol) and dichlorobis(triphenylphosphine)palladium (II) (10 mg, 0.013 mmol) and heated to 150° C. in a microwave reactor for 20 min. The mixture was partitioned between water and DCM, the organic phase dried, evaporated and purified by silica gel chromatography using 0-6% MeOH:DCM. 13 mg (28%) of the title compound were obtained. 1H NMR (DMSO-d6, 300 MHz): δ 11.88 (d, J=1.5 Hz, 1H), 11.08 (s, 1H), 8.57 (d, J=2.1 Hz, 1H), 8.45 (d, J=1.8 Hz, 1H), 7.90 (s, 1H), 7.82 (d, J=8.4 Hz, 1H), 7.77 (d, J=2.4 Hz, 1H), 7.47 (m, 4H), 7.34 (t, J=2.6 Hz, 1H), 6.47 (t, J=2.4 Hz, 1H), 3.58 (bs, 4H), 2.3 (bs, 4H), 2.18 (s, 3H).

Provenance & Evidence