聚合甲醛 、
(1R,3R,4S)-(p-ethoxyphenylamino)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one 、
5,5-二甲基-1,3-环己二酮 以
乙醇 为溶剂,
反应 0.16h,
以93%的产率得到4,4-dimethyl-6'-ethoxy-1'-{(1R,3R,4S)-1,7,7-trimethyl-2-oxobicyclo[2.2.1]heptan-3-yl}-2',4'-dihydro-1'H-spiro[cyclohexane-1,3'-quinoline]-2,6-dione