3,4,5,6-四氢苯酐 、 ethyl 2-(6-amino-7-fluoro-2-methyl-3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)butanoate 在
溶剂黄146 作用下,
反应 3.5h,
以68%的产率得到ethyl 2-(6-(1,3-dioxo-4,5,6,7-tetrahydro-1H-isoindol-2(3H)-yl)-7-fluoro-2-methyl-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl) butanoate