6-hydroxymethyl-4-isobutyl-1,4-dihydro-quinoline-3-carbonitrile 在
manganese dioxide Silica gel 、
乙酸乙酯 、 hexanes 作用下,
以
氯仿 为溶剂,
反应 10.5h,
以Flash chromatography (Merck Silica gel 60, 70-230 mesh, 0%-30% ethyl acetate in hexanes in 30 min) afforded 6-formyl-4-isobutyl-quinoline-3-carbonitrile (110 mg, 56%) as a white solid的产率得到6-formyl-4-isobutyl-quinoline-3-carbonitrile