3-(3-Aminophenyl)-1,4-dimethylpiperazin-2-one → N-tert-Butyl-3-{2-[3-(1,4-dimethyl-3-oxo-piperazin-2-yl)-phenylamino]-pyrrolo[2,1-f][1,2,4]triazin-7-yl}-benzenesulfonamide

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N-tert-Butyl-3-{2-[3-(1,4-dimethyl-3-oxo-piperazin-2-yl)-phenylamino]-pyrrolo[2,1-f][1,2,4]triazin-7-yl}-benzenesulfonamide was prepared from N-tert-butyl-3-(2-hydroxy-pyrrolo[2,1-f][1,2,4]triazin-7-yl)-benzenesulfonamide and 3-(3-amino-phenyl)-1,4-dimethyl-piperazin-2-one in an analogous manner to Example 1061. Product isolated as a yellow foam (74 mg, 44%). LCMS (m/e) 548 (M+H); 1H-NMR (CDCl3, 400 MHz) δ 8.74 (s, 1H), 8.58 (s, 1H), 8.44 (d, 1H, J=7.9 Hz), 7.86 (d, 1H, J=7.8 Hz), 7.80 (d, 1H, J=8.2 Hz), 7.65-7.55 (m, 1H), 7.44-7.35 (m, 2H), 7.09 (d, 1H, J=7.6 Hz), 7.05 (d, 1H, J=4.8 Hz), 6.89 (s, 1H), 6.85 (d, 1H, J=4.8 Hz), 4.71 (s, 1H), 3.77-3.64 (m, 1H), 3.69 (s, 1H), 3.26-2.97 (m, 1H), 2.99 (s, 3H), 2.73-2.62 (m, 1H), 2.17 (s, 3H), 1.23 (s, 9H).

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