2,2,2-Trifluoroethanol → 4-(1H-indol-3-yl)-N-[2-methoxy-4-(4-methylpiperazin-1-yl)-5-nitrophenyl]pyrimidin-2-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-methylpiperazine (148 mg, 1.48 mmol), N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1H-indol-3-yl)pyrimidin-2-amine (Intermediate 68, 224 mg, 0.59 mmol) and trifluoroethanol (5 mL) was sealed into a microwave tube and heated to 120° C. for 1 h in a microwave reactor and then cooled to r.t. The mixture was then concentrated in vacuo. Trituration of the resulting brown gum with ethanol and then diethyl ether gave a solid that was collected by filtration and dried under vacuum to give the title compound (89 mg, 33%) as a pale brown solid; 1H NMR: 3.02-3.13 (4H, m), 4.00 (3H, s), 6.86 (1H, s), 7.08 (1H, t), 7.18 (1H, t), 7.31 (1H, d), 7.45 (1H, d), 8.08 (1H, s), 8.33 (2H, dd), 8.82 (1H, d), 11.81 (1H, s); m/z: ES+ MH+ 460.5.

Provenance & Evidence