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-pyrazolo[1,5-a]pyridin-3-ylpyrimidin-2-amine

Participants

Reaction Conditions

Reaction Steps

DIPEA (0.343 mL, 1.97 mmol) was added to a suspension of N-(4-fluoro-2-methoxy-5-s nitrophenyl)-4-pyrazolo[1,5-a]pyridin-3-ylpyrimidin-2-amine (Intermediate 155, 300 mg, 0.79 mmol) and (3aR,6aR)-5-methyl-2,3,3a,4,6,6a-hexahydro-1H-pyrrolo[3,4-b]pyrrole (Intermediate 37, 109 mg, 0.87 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 and eluting with 7M methanolic ammonia. Appropriate fractions were then concentrated in vacuo onto silica. Further purification by FCC, eluting with 0-4% 7N methanolic ammonia in CH2Cl2 gave the title compound (198 mg, 52%) as a slightly impure orange/red solid which was used without further purification; 1H NMR (CDCl3): 1.89 (1H, dd), 2.06-2.18 (1H, m), 2.21 (3H, s), 2.31 (1H, dd), 2.47 (2H, ddd), 2.65 (1H, t), 2.99-3.10 (1H, m), 3.26 (1H, t), 3.51-3.60 (1H, m), 3.98 (3H, s), 4.39-4.46 (1H, m), 6.46 (1H, s), 6.93 (1H, td), 7.04 (1H, d), 7.38 (1H, s), 7.43 (1H, ddd), 8.36 (1H, d), 8.46 (1H, s), 8.52 (1H, m), 8.58 (1H, m), 8.98 (1H, s); m/z: ES+ MH+ 487.15.

Provenance & Evidence