methyl 1,4,5,7-tetrahydro-4-(4-chlorophenyl)-2-methyl-7-oxo-furo[3,4-b]-pyridine-3-carboxylate 在
manganese dioxide 作用下,
以
二氯甲烷 为溶剂,
以to give 0.94 g (63% of theory) of the title compound的产率得到Methyl 5,7-dihydro-4-(4-chlorophenyl)-2-methyl-7-oxo-furo [3,4-b]-pyridine-3-carboxylate