Diisopropylethylamine → 2-Chloro-6-morpholin-4-yl-pyrimidine-4-carboxylic acid[4-(2-morpholin-4-yl-ethoxy)-naphthalen-1-yl]-amide

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Reaction Steps

2-Chloro-6-morpholin-4-ylpyrimidine-4-carboxylic acid (0.280 g, 1.15 mmol) in DMF (5 ml) is treated with HBTU (0.466 g, 1.5 eq) and diisopropylethylamine (0.367 ml). The mixture is stirred at room temperature for 5-10 min. 4-(2-Morpholin-4-yl-ethoxy)-naphthalen-1-ylamine (0.224 g, 0.82 mmol) is then added. The mixture is stirred at room temperature for an additional 15 h, diluted with water and extracted with ethyl acetate. The organic layer is dried over Na2SO4 and evaporated to dryness. The residue is purified by column chromatography on silica gel eluted with 2% MeOH in ethyl acetate to provide 2-chloro-6-morpholin-4-yl-pyrimidine-4-carboxylic acid [4-(2-morpholin-4-yl-ethoxy)-naphthalen-1-yl]-amide as a solid (0.342 g). Mp: 95-93° C., 1H NMR (300 MHz, DMSO-d6) δ 10.43 (s, 1H), 8.20 (m, 1H), 7.79 (s, 1H), 7.56 (m, 3H), 7.39 (s, 1H), 7.03 (d, J=8.1Hz, 1H), 4.31 (t, J=6.3 Hz, 2H), 3.60 (brt, 8H) 2.88 (t, 2H), 2.56 (brt, 8H). MS: 498 (M+1).

Provenance & Evidence