3-Bromo-6-[4-(3-oxetanyl)-1-piperazinyl]pyridazine → (R)-4-((R)-1-((1-cyclopropyl-5-(6-(4-(oxetan-3-yl)piperazin-1-yl)pyridazin-3-yl)-1H-benzo[d]imidazol-7-yl)oxy)ethyl)pyrrolidin-2-one

Participants

Reaction Steps

Prepared by Suzuki coupling reaction procedure, as previously described for the synthesis of (R)-4-((R)-1-((1-cyclopropyl-5-(3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)-1H-benzo[d]imidazol-7-yl)oxy)ethyl)pyrrolidin-2-one:, using instead 3-bromo-6-(4-(oxetan-3-yl)piperazin-1-yl)pyridazine as a starting material to afford 52.7 mg (61%) of (R)-4-((R)-1-((1-cyclopropyl-5-(6-(4-(oxetan-3-yl)piperazin-1-yl)pyridazin-3-yl)-1H-benzo[d]imidazol-7-yl)oxy)ethyl)pyrrolidin-2-one:. 1H NMR (300 MHz, d6-DMSO) δ 8.12 (s, 1H), 8.04 (d, J=9.9 Hz, 1H), 7.80 (d, J=1.1 Hz, 1H), 7.62 (m, 2H), 7.35 (d, J=9.9 Hz, 1H), 4.81 (m, 1H), 4.52 (m, 4H), 3.69 (m, 5H), 3.41 (m, 2H), 3.20 (m, 1H), 2.54 (m, 1H), 2.37 (m, 6H), 1.34 (d, J=6.3 Hz, 3H), 1.09 (m, 4H). MS (ESI+) m/z 504.3 (M+H).

Provenance & Evidence