7,7'-dimethoxy-3,4,3',4'-tetrahydro-2H,2'H-2,2'-(2-oxa-propanediylidene)-bis-naphthalen-1-one 在
1,4-二氧六环 、 palladium on activated charcoal 作用下,
生成 optically inactive 7,7'-dimethoxy-3,4,3',4'-tetrahydro-2
H,2'
H-2,2'-(2-oxa-propanediyl)-bis-naphthalen-1-one