1,4-Dioxane → 4-(2-{5-[6-(4-Methyl-pyridin-2-ylamino)-pyridin-2-yl]-oxazol-2-yl}-vinyl)-benzonitrile

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Reaction Conditions

Reaction Steps

A sealed tube was charged with a mixture of (4-methyl-pyridin-2-yl)-(6-oxazol-5-yl-pyridin-2-yl)-amine (200 mg, 0.793 mmol), 4-(2-bromovinyl)-benzonitrile (330 mg, 1.59 mmol), Pd(PPh3)4 (46 mg, 0.0396 mmol), LiOtBu (127 mg, 1.59 mmol) and anhydrous 1,4-dioxane (5 ml) and heated to 100° C. with stirring for 2 h. The cooled reaction mixture was treated with water and extracted with DCM. The combined organics were dried over MgSO4, filtered and evaporated under reduced pressure before purification by column chromatography on SiO2, eluting with 50% EtOAc in cyclohexane to afford the title compound as a yellow solid (76 mg, 25%). 1H NMR (300 MHz, DMSO-d6) δ=9.79 (s, 1H), 8.12 (d, J=5.1 Hz, 1H), 7.97 (d, J=8.3 Hz, 2H), 7.90 (d, J=8.2 Hz, 2H), 7.86-7.61 (m, 5H), 7.46 (d, J=16.3 Hz, 1H), 7.36 (d, J=7.3 Hz, 1H), 6.78 (d, J=4.7 Hz, 1H), 2.35 (s, 3H). (ESI+) m/z 380 (M+H).

Provenance & Evidence