Water → 2-(Pyridin-2-yl)pyrimidine-5-carboxylic acid-(4-fluoroindol-1-yl)amide

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Reaction Steps

A suspension of 2-(pyridine-2-yl)-pyrimidine-5-carbonyl chloride (0.44 g) in EtOAc (20 mL) is added portion wise to a mixture of 1-amino-4-fluoroindole (0.30 g) and K2CO3 (0.276 g) in EtOAc (10 mL)/water (20 mL) and the resulting mixture is stirred at rt for 24 h. The aqueous phase is separated and extracted twice with EtOAc. The combined organic layer is washed with water and brine, dried (MgSO4), filtered and concentration in vacuo. The residue is purified by silica gel chromatography eluting with EtOAc to afford 2-(pyridin-2-yl)pyrimidine-5-carboxylic acid-(4-fluoroindol-1-yl)amide (0.115 g, 17%) as a solid. MS: 334 (M+H); 1H NMR (300 MHz, DMSO-d6): δ 6.65 (d, 1H), 6.89-6.95 (q, 1H), 7.16-7.23 (m, 1H), 7.32-7.35 (d, 1H), 7.57 (d, 1H), 7.57-7.64 (m, 1H), 8.02-8.08 (t, 1H), 8.50-8.52 (d, 1H), 8.82-8.83 (d, 1H), 9.49 (s, 2H), 12.30 (s, 1H).

Provenance & Evidence