Acetic Anhydride → HCID 44578692, compound

Participants

Reaction Steps

To a stirred solution of N-[4-(3-aminoazetidin-1-yl)phenyl]-5-fluoro-4-(1-isopropyl-2-methyl-1H-imidazol-5-yl)pyrimidin-2-amine (Example 140; 110 mg, 0.29 mM) and triethylamine (44 μl, 0.317 mM) in dry DCM (4.0 ml), acetic anhydride (30 μl, 0.317 mM) was added. The reaction was stirred at room temperature under nitrogen for 2.5 hours. A few drops of MeOH were added and the solution stirred for 10 minutes. The reaction mixture was then diluted with more DCM and the solution extracted in turn with water (twice) and saturated sodium chloride. The organic layer was then dried with anhydrous sodium sulphate, filtered and evaporated. The crude product was triturated with ether, filtered washed with ether and dried to give the title compound as a yellow solid (99 mg, 81%). NMR 1.4 (d, 6H), 1.8 (s, 3H), 2.5 (s, 3H+DMSO), 3.5 (t, 2H), 4.05 (t, 2H), 4.53 (m, 1H), 5.43 (m, 1H), 6.4 (d, 2H), 7.33 (m, 3H), 8.42 (m, 2H), 9.08 (s, 1H); m/z 424.

Provenance & Evidence