Methanesulfonic Acid → 5-[7-(2-Methoxy-phenyl)-pyrrolo[2,1-f][1,2,4]triazin-2-ylamino]-1,3-dihydro-indol-2-one

Participants

Reaction Steps

2-Methanesulfinyl-7-(2-methoxy-phenyl)-pyrrolo[2,1-f][1,2,4]triazine (75.0 mg, 0.000261 mol), Methanesulfonic acid (0.03388 mL, 0.0005220 mol) and [B] 5-Amino-1,3-dihydro-indol-2-one (77.3 mg, 0.000522 mol) were dissolved in 1-Methoxy-2-propanol (0.74 mL, 0.0076 mol) and the reaction was irradiated at 300 watts, 200° C. for 40 minutes or until HPLC showed consumption of starting material. The reaction mixture was then reduced en vacuo and the product was isolated and purified by Gilson prep HPLC to afford 5.40 mg of 5-[7-(2-Methoxy-phenyl)-pyrrolo[2,1-f][1,2,4]triazin-2-ylamino]-1,3-dihydro-indol-2-one as a lyophilized powder. (M+H)=371.9. 1H NMR (400 MHz, DMSO, d6) δ 10.19 (s, 1H), 9.25 (s, 1H), 8.91 (s, 1H), 7.78 (d, 1H, J=7.53 Hz), 7.74 (s, 1H), 7.47 (t, 1H, J=7.53 Hz), 7.39 (d, 1H, J=7.88 Hz), 7.23 (d, 1H, J=8.09 Hz), 7.13 (t, 1H, J=7.28 Hz), 6.90 (dd, 2H, J=4.61, 6.41 Hz), 6.64 (d, 1H, J=8.37 Hz), 3.78 (s, 3H), 3.38 (s, 2H).

Provenance & Evidence