反应详情

温度

60 °C

To a solution of N-[2-(2-isobutyl-6-methyl-pyridin-4-yl)-2-oxo-ethyl]-2,6-dimethyl-isonicotinamide (9 mg, 27 μmol) in THF (1 mL), Burgess reagent (20 mg, 80 μmol) is added. The mixture is stirred at 60° C. for 2 h before it is concentrated. The crude product is purified on prep. TLC plates with DCM containing 5% of methanol to give 2-isobutyl-4-[2-(2,6-dimethyl-4-pyridinyl)-oxazol-5-yl]-6-methyl-pyridine (5 mg) as a pale yellow wax; LC-MS: tR=0.96*, [M+1]+=322.12; 1H NMR (CDCl3): δ 1.00 (d, J=6.8 Hz, 6H), 2.13-2.24 (m, 1H), 2.64 (s, 3H), 2.66 (s, 6H), 2.72 (d, J=7.3 Hz, 2H), 7.24 (s, 1H), 7.31 (s, 1H), 7.67 (s, 3H).

1. concentrationis concentrated
2. customThe crude product is purified on prep