Methanol → 4-[(3R)-3-Dimethylaminopyrrolidin-1-yl]-6-methoxy-N-[5-methyl-4-(1-methylindol-3-yl)pyrimidin-2-yl]benzene-1,3-diamine

Participants

Reaction Steps

A mixture of N-{4-[(3R)-3-dimethylaminopyrrolidin-1-yl]-2-methoxy-5-nitrophenyl}-5-methyl-4-(1-methylindol-3-yl)pyrimidin-2-amine (Intermediate 84, 325 mg, 0.65 mmol), iron (217 mg, 3.89 mmol) and NH4Cl (24.26 mg, 0.45 mmol) in ethanol (16 mL) and water (5.33 mL) was heated at reflux for 3 h. The mixture was then cooled and concentrated in vacuo to give a thick slurry. CH2Cl2 (100 mL) and CH3OH (10 mL) were then added and the mixture was stirred for 0.25 h and then filtered. The filter cake was washed with further CH2Cl2 and CH3OH and the combined organics were dried (MgSO4) and concentrated in vacuo. Purification by FCC, eluting with 1-8% methanolic ammonia in CH2Cl2 gave the title compound (257 mg, 84%) as a yellow dry film; 1H NMR: 1.76 (1H, td), 2.03 (1H, dt), 2.18 (6H, s), 2.37 (3H, s), 2.79-2.87 (1H, m), 2.88-2.97 (2H, m), 3.08-3.14 (1H, m), 3.18 (1H, dd), 3.73 (3H, s), 3.90 (3H, s), 4.19 (2H, s), 6.70 (1H, s), 7.13 (1H, t), 7.25 (1H, t), 7.44 (1H, s), 7.51 (1H, d), 7.65 (1H, s), 8.04 (1H, s), 8.19 (1H, s), 8.46 (1H, d); m/z: ES+ MH+ 472.35.

Provenance & Evidence