甲基碘化镁 、
Ethandiyl-1-(3-benzyl-8-hydroxy-5-oxo-1,2,3,4-tetrahydro-5H-benzopyrano-<3,4-c>-9-pyridin)-2-(3-benzyl-10-hydroxy-5-oxo-1,2,3,4-tetrahydro-5H-benzopyrano-<3,4-c>-8-pyridin) 以
乙醚 、
苯 为溶剂,
反应 5.0h,
以17%的产率得到Ethandiyl-1-(3-benzyl-8-methoxy-5,5-dimethyl-1,2,3,4-tetrahydro-5H-benzopyrano-<3,4-c>-9-pyridin)-2-(3-benzyl-10-methoxy-5,5-dimethyl-1,2,3,4-tetrahydro-5H-benzopyrano-<3,4-c>-8-pyridin)