methyl 2-methyl-5-(2-isopropyl-3(2H)-pyridazinon-6-yl)-6-phenyl-1,4-dihydropyridine-3-carboxylate 在
manganese dioxide 作用下,
以
乙酸乙酯 为溶剂,
反应 19.0h,
以to afford pure methyl 2-methyl-5-(2-isopropyl-3(2H)-pyridazinon-6-yl)-6-phenylpyridine-3-carboxylate (4.26 g) as light yellow crystalline powder的产率得到methyl 2-methyl-5-(2-isopropyl-3(2H)-pyridazinon-6-yl)-6-phenylpyridine-3-carboxylate