N-bromobutanimide → 5-Bromo-4-(1-methylethyl)-2-pyrimidinamine

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Reaction Steps

N-Bromosuccinimide (0.5 g, 2.8 mmol) was added to a solution of 4-isopropylpyrimidin-2-amine (0.39 g, 2.81 mmol) in chloroform. The resultant yellow solution was stirred at ambient temperature for 1 h and concentrated in vacuo. The residue was purified by column chromatography (3-10% 9:1 methanol:ammonium hydroxide in chloroform) to afford 5-bromo-4-isopropylpyrimidin-2-amine (0.69 g, 3.18 mmol, 113%) as a pale yellow solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.21 (1 H, s), 6.75 (2 H, s), 3.10-3.23 (1 H, m), 1.14 (6 H, d, J=6.80 Hz). MS (LC/MS) R.T.=2.58; [M]+=216.09.

Provenance & Evidence