methyl 4-[4-(4-methoxycarbonyl-2,5-dimethylfuran-3-yl)-3-nitrophenyl]-2,5-dimethylfuran-3-carboxylate 在
palladium on activated charcoal
氢气 作用下,
以
甲醇 为溶剂,
反应 5.0h,
以95%的产率得到4-(1,3-Dimethyl-4-oxo-4,5-dihydro-furo[3,4-c]quinolin-7-yl)-2,5-dimethyl-furan-3-carboxylic acid methyl ester