Acryloyl chloride → N-(2-{(3aR,6aR)-5-Methyl-2,3,3a,4,6,6a-hexahydropyrrolo[3,4-b]pyrrol-1-yl}-4-methoxy-5-{[4-(1-methylindol-3-yl)pyrimidin-2-yl]amino}phenyl)prop-2-enamide

Participants

Reaction Conditions

Reaction Steps

Acryloyl chloride (41.3 mg, 0.46 mmol) in THF (1 mL) was added dropwise to a stirred solution of 4-[(3aR,6aR)-5-methyl-2,3,3a,4,6,6a-hexahydropyrrolo[3,4-b]pyrrol-1-yl]-6-methoxy-N-[4-(1-methylindol-3-yl)pyrimidin-2-yl]benzene-1,3-diamine (Intermediate 123, 195 mg, 0.42 mmol) in THF (3 mL), cooled in an ice/methanol bath to approximately −15° C. Upon slow addition of the acryloyl chloride a precipitate immediately formed. The mixture was stirred for 1 h while being gradually warmed to 0° C. The mixture was then diluted with CH2Cl2 (50 mL) and washed with sat. NaHCO3 (50 mL). The resulting aqueous solution was extracted with CH2Cl2 (2×25 mL). The combined organic solutions were dried (MgSO4) and concentrated onto silica. Purification by FCC, eluting with 0-5% 7N methanolic ammonia in CH2Cl2 gave crude solid product after concentration of appropriate fractions in vacuo. This solid was dissolved in the minimum amount of hot CH2Cl2 and triturated with diethyl ether to give the title compound (115 mg, 53%) as a white solid; 1H NMR (CDCl3) 1.77-1.96 (2H, m), 2.15-2.26 (1H, m), 2.29 (3H, s), 2.26-2.37 (1H, m), 2.73 (1H, d), 2.80 (1H, d), 2.83-2.90 (1H, m), 2.95 (1H, td), 3.21 (1H, t), 3.57-3.68 (1H, m), 3.88 (3H, s), 4.00 (3H, s), 5.68-5.74 (1H, m), 6.45 (2H, d), 6.81 (1H, s), 7.20 (1H, d), 7.23-7.31 (2H, m) partially obscured under CDCl3 signal, 7.37-7.43 (1H, m), 7.71 (1H, s), 8.02-8.10 (1H, m), 8.38 (1H, d), 9.09 (1H, s), 9.46 (1H, s), 9.85 (1H, s); m/z: ES+ MH+ 524.25.

Provenance & Evidence