Hydrochloric Acid → HCID 71283223, compound

Participants

Reaction Steps

To a solution of the tert-butyl 4-(6-carbamoyl-2-(4-(4-fluorophenoxy)phenyl)pyrimidin-4-yl)-3-(hydroxymethyl)piperazine-1-carboxylate (0.848 g, 1.62 mmol) in dioxane (25 mL) was added 4M HCl in dioxane (5 mL, 20 mmol). After stirring overnight the reaction was concentrated in vacuo. The residue was triturated with 10 mL acetonitrile, filtered, and rinsed with 10 mL acetonitrile. The solid was then successively suspended and filtered three times from warm acetonitrile. The solid residue was then partitioned between 10 mL EtOAc and 2 mL 2M aqueous Na2CO3 solution. The mixture was diluted with 50 mL EtOAc and 25 mL water, the organic layer was removed and the aqueous emulsion was washed once more with 50 mL EtOAc. The aqueous emulsion was filtered off and rinsed with water. The resulting pasty solid was triturated with 2 mL acetonitrile, filtered, rinsed once with 1 mL acetonitrile, and dried under vacuum to give 2-(4-(4-fluorophenoxy)phenyl)-6-(2-(hydroxymethyl)piperazin-1-yl)pyrimidine-4-carboxamide as a pale tan powder (0.198 g, 0.468 mmol, 29% yield). 1H NMR (400 MHz, DMSO-d6): 8.52 (2H, d, J=8.8 Hz), 8.32 (1H, s), 7.78 (1H, s), 7.31-7.24 (2H, m), 7.22-7.12 (3H, m), 7.04 (2H, d, J=8.8 Hz), 4.85 (1H, s), 4.79-4.60 (1H, very broad s), 3.83-3.74 (1H, m), 3.56 (1H, br s), 3.17-3.09 (1H, m), 3.05-2.94 (2H, m), 2.73-2.65 (1H, m), 2.63-2.54 (1H, m), 2.49-2.32 (2H, m). LC/MS: m/z=424.2 [M+H]+.

Provenance & Evidence