Diisopropylethylamine → N-{4-[(3aR,6aR)-5-methyl-2,3,3a,4,6,6a-hexahydropyrrolo[3,4-b]pyrrol-1-yl]-2-methoxy-5-nitrophenyl}-4-(4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-3-yl)pyrimidin-2-amine

Participants

Reaction Conditions

Reaction Steps

DIPEA (0.583 mL, 3.35 mmol) was added to a suspension of N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-3-yl)pyrimidin-2-amine (Intermediate 127, 515 mg, 1.34 mmol) and (3aR,6aR)-5-methyl-2,3,3a,4,6,6a-hexahydro-1H-pyrrolo[3,4-b]pyrrole (Intermediate 37, 186 mg, 1.47 mmol) in 2,2,2-trifluoroethanol (5 mL) and the mixture was heated in a microwave at 140° C. for 1 h. After cooling, the mixture was part-purified by ion exchange chromatography, using an SCX column, eluting with 7M methanolic ammonia, and then concentrated in vacuo onto silica. Purification by FCC, eluting with 0-5% 7N methanolic ammonia in CH2Cl2 gave the title compound (400 mg, 61%) as an orange/red foam; 1H NMR (CDCl3): 1.87 (1H, dd), 1.90-1.98 (2H, m), 2.03-2.14 (3H, m), 2.20 (3H, s), 2.28 (1H, dd), 2.45 (2H, ddd), 2.60-2.67 (1H, m), 2.97-3.07 (1H, m), 3.18-3.34 (3H, m), 3.48-3.58 (1H, m), 3.96 (3H, s), 4.20 (2H, t), 4.40 (1H, ddd), 6.43 (1H, s), 6.86 (1H, d), 7.35 (1H, s), 7.95 (1H, s), 8.30 (1H, d), 8.92 (1H, s); m/z: ES+ MH+ 491.15.

Provenance & Evidence