反应详情

温度

50 °C

Compound 494 (0.03 g, 0.08 mmol) was dissolved in 1,4-dioxan (0.5 mL) and 2-phenylethyl isocyanate (0.016 mL, 0.12 mmol) was added. The solution was stirred at 50° C. for 18 h. Work up as described in the preparation of compound 259. The crude product was purified by flash chromatography using a gradient of EtOAc/petroleum ether (40-60) 15:85→60:40 as the eluent. This afforded the title compound as a slightly coloured solid. 13C NMR (CDCl3) δ 196.5, 159.2 (dd), 156.0, 155.6 (dd), 148.1, 139.6, 138.9, 136.5, 135.1, 133.9, 132.2, 131.9, 128.7, 128.5, 126.4, 124.6 (dd), 124.2 (dd), 123.1, 121.1, 116.2, 112.7, 111.6 (dd), 104.9 (dd), 41.5, 36.3, 19.6

1. customThe crude product was purified by flash chromatography