反应详情

Using Method X, with 200 mg of 2-(3,4,5-trimethoxyphenylamino)-6-chloropyrazine (all amounts scaled accordingly) and N-(4-hydroxynaphthalen-1-yl)acetamide (CJS 704), using an identical workup and chromatography using a mixture of ethyl acetate and dichloromethane (7:3) furnished 31 mg of the title compound. Yield: 6.7%. 1H NMR (250 MHz, DMSO-d6) δ 2.21 (s, 3H), 3.20 (s, 9H), 3.48 (s, 3H), 6.61 (s, 2H), 7.31 (d, 1H, J=8.2 Hz), 7.59 (t, 2H, J=7.6 Hz), 7.70 (d, 1H, J=8.3 Hz), 7.91 (s, 1H), 7.96-7.99 (m, 2H), 8.13 (d, 1H, J=7.8 Hz), 9.49 (s, 1H), 9.93 (s, 1H). 13C NMR (62.5 MHz, DMSO-d6) δ 23.44, 55.10, 59.95, 95.38, 116.77, 120.89, 121.48, 121.61, 123.18, 126.38, 126.53, 127.11, 128.23, 128.71, 130.90, 131.98, 136.18, 146.44, 150.64, 152.59, 158.26, 168.93. m/z [(M+H)+ calcd for C25H24N4O5 460.2].