Water → 2-(5-Fluoro-2-(hydroxymethyl)-3-(8-(5-(4-methylpiperazin-1-yl)pyridin-2-ylamino)imidazo[1,2-a]pyridin-6-yl)phenyl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-one

Participants

Reaction Conditions

Reaction Steps

A 25 mL sealed tube was charged with 101b (300 mg, 0.88 mmol), 101l (423 mg, 0.88 mmol), Cs2CO3 (572 mg, 1.76 mmol), Pd2(dba)3 (80 mg, 0.09 mmol) suspended in CH3CN (25 mL), and H2O (1 mL). The mixture was heated at 140° C. under microwave irradiation for 1 hour. It was then evaporated and the residue was purified by silica-gel column eluting with 10:1 methylene chloride/methanol to give the crude product, which was further purified by reverse phase Combi-flash eluting with 0.3% NH4HCO3 in 1:4 water/CH3CN to afford 101 as a yellow solid (150 mg, 28%). MS: (M+H)+ 621. 1H NMR (500 MHz, DMSO) δ 8.94 (s, 1H), 8.27 (d, J=1.5, 1H), 8.16 (d, J=1.5, 1H), 7.96 (d, J=1.0, 1H), 7.91 (d, J=2.5, 1H), 7.58 (d, J=1.5, 1H), 7.33-7.42 (m, 3H), 7.25-7.28 (m, 1H), 6.53 (s, 1H), 4.88 (t, J=4.5, 1H), 4.30 (d, J=4.5, 2H), 4.12-4.20 (m, 3H), 3.90-3.92 (m, 1H), 3.06 (t, J=4.5, 4H), 2.53-2.65 (m, 2H), 2.43-2.48 (m, 6H), 2.21 (s, 3H), 1.76-1.81 (m, 2H), 1.67-1.71 (m, 2H)

Provenance & Evidence