Acryloyl chloride → N-(5-{[5-Chloro-4-(1H-indol-3-yl)pyrimidin-2-yl]amino}-4-methoxy-2-[1-methyl-3,6-dihydro-2H-pyridin-4-yl]phenyl)prop-2-enamide

Participants

Reaction Conditions

Reaction Steps

Acryloyl chloride (0.217 mL, 1M in THF, 0.22 mmol) was added dropwise to a slurry of N′-[5-chloro-4-(1H-indol-3-yl)pyrimidin-2-yl]-4-methoxy-6-(1-methyl-3,6-dihydro-2H-pyridin-4-yl)benzene-1,3-diamine (Intermediate 7, 100 mg, 0.22 mmol) and DIPEA (0.057 mL, 0.33 mmol) in THF (3 mL) at −5° C. over a period of 1 minute under N2. The resulting mixture was stirred at 0° C. for 15 minutes and then concentrated in vacuo. The residue was dissolved in CH2Cl2 (5 mL) plus a few drops of CH3OH, and washed with sat. NaHCO3 (2 mL). The organic solution was then dried (MgSO4) and loaded onto silica in vacuo. Purification by FCC, eluting with 5-25% CH3OH in CH2Cl2 and concentration of appropriate fractions in vacuo provided a residue that was washed with CH3OH (0.3 mL) and dried in air to give the title compound (37 mg, 31%) as a beige crystalline solid. 1H NMR: 2.28 (3H, s), 2.38 (2H, m), 2.55 (2H, m), 2.98 (2H, d), 3.85 (3H, s), 5.6-5.72 (2H, m), 6.15 (1H, m), 6.41 (1H, m), 6.88 (1H, s), 7.10 (1H, t), 7.18 (1H, t), 7.47 (1H, d), 7.98 (1H, s), 8.33 (1H, s), 8.36 (1H, d), 8.42 (1H, s), 8.49 (1H, s), 9.29 (1H, s), 11.86 (1H, s); m/z: ES+ MH+ 515.

Provenance & Evidence