Propylphosphonic acid → 2-(1-Cyclopropyl-5-trifluoromethyl-1H-pyrazol-4-yl)-N-[5-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonyl)-pyridin-3-yl]-acetamide

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Reaction Steps

To a solution of (5-Amino-pyridin-3-yl)-(7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-methanone (Preparation 95, 50 mg, 0.17 mmol), (1-Cyclopropyl-5-trifluoromethyl-1H-pyrazol-4-yl)-acetic acid (Preparation 141, 47.1 mg, 0.21 mmol) and TEA (0.08 mL, 0.62 mmol) in THF (1 mL), 1-propylphosphonic acid cyclic anhydride (50% solution in EtOAc, 0.26 mL, 0.44 mmol) was added and the mixture was stirred at room temperature for 14 hours. The reaction mixture was evaporated under reduced pressure and the residue partitioned between water and ethyl acetate. The organic layer was washed with saturated sodium bicarbonate solution and dried (Na2SO4) and evaporated in vacuo. Purification by column chromatography on silica gel (gradient of EtOAc:Hexane 0:100 to 80:20) gave the title compound as a white solid in 76% yield, 67 mg. 1H NMR (400 MHz, DMSO-D6) δ: 1.05-1.07 (m, 2H), 1.08-1.15 (m, 2H), 1.54 (d, 6H), 3.73-3.76 (m, 3H), 5.06-5.13 (m, 1H), 7.55 (s, 1H), 8.44 (s, 1H), 8.51 (s, 1H), 8.73 (s, 1H), 8.94 (d, 1H), 8.99 (s, 1H), 9.44 (s, 1H), 10.61 (s, 1H). LCMS (System 10): Rt=3.03 min m/z 498 [M+H]+

Provenance & Evidence