3-Chloro-4-fluoroaniline → N-(3-Chloro-4-fluorophenyl)-7-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine

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A mixture of 4-chloro-7-methyl-7H-pyrrolo[2,3-d]pyrimidine (398.8 mg, 2.4 mmol) and 3-chloro-4-fluoro-phenylamine (378 mg, 2.6 mmol) in DMF (6 mL) was stirred at room temperature for 2 minutes. To it was added silver triflate (672 mg, 2.6 mmol), the mixture was then stirred at 90° C. for 2 hours. The reaction was then diluted with ethyl acetate and filtered off the precipitate, washing the precipitate with 10% ammonia solution. The filtrate was extracted with ethyl acetate, dried and concentrated. The residue was triturated with ethyl acetate and filtered to give 549.1 mg (83%) of (3-chloro-4-fluoro-phenyl)-(7-methyl-7H-pyrrolo(2,3-d]pyrimidin-4-yl)-amine as an off-white solid. 1H NMR (300 MHz, DMSO-d6) 9.48 (s, 1H, NH), 8.35 (s, 1H), 8.29 (dd, J=2.7 & 6.8Hz, 1H), 7.75-7.80 (m, 1H), 7.37 (t, J=9.3 Hz, 1H), 7.30 (d, J=3.1 Hz, 1H), 6.77 (d, J=3.1 Hz, 1H), 3.75. (s, 3H, CH3). MS 277 [M++1].

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