7-Methoxy-4-methyl-1-tetralone 、
N,N-二甲基甲酰胺二乙基缩醛 在
3,4-dihydro-2-dimethylaminomethylene-7-methoxy-4-methyl-1(2H) naphthalenone 、 silica 、
乙酸乙酯 、
ethyl acetate n-hexane 作用下,
以to give 3,4-dihydro-2-dimethylaminomethylene-7-methoxy-4-methyl-1(2H) naphthalenone as a yellow oil (920 mg)的产率得到3,4-dihydro-2-dimethylaminomethylene-7-methoxy-4-methyl-1(2H) naphthalenone