Methanesulfonic Acid → N-[3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amine

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Reaction Conditions

Reaction Steps

To a flask containing 3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (3.3 g, 14.00 mmol) and 2-chloro-4-(trifluoromethyl)pyrimidine (2.94 g, 16.10 mmol) were added dioxane (44 mL) and methanesulfonic acid (1.55 g, 16.10 mmol) and the reaction was heated at 100° C. overnight. The reaction was cooled, diluted with ethyl acetate, washed with water, dried over magnesium sulfate, filtered and concentrated. Flash chromatography was used for purification to yield N-[3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amine (4.10 g, 10.70 mmol, 76% yield). MS ESI: [M+H]+ m/z 384. 1H NMR (500 MHz, DMSO-d6) δ 10.41 (s, 1H), 8.85 (d, J=4.9, 1H), 7.92 (dt, J=2.3, 12.1, 1H), 7.77 (d, J=1.5, 1H), 7.32 (d, J=4.9, 1H), 6.98 (dd, J=2.2, 8.4, 1H), 1.28 (s, 12H).

Provenance & Evidence