3,4-dihydro-1-(3,4-dimethoxy-2-methoxycarbonylbenzoyl)-2-methyl-6,7-(methylenedioxy)isoquinolinium iodide 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 0.5h,
以91.1%的产率得到1,2,3,4-tetrahydro-1-(3,4-dimethoxy-2-methoxycarbonylbenzoyl)-2-methyl-6,7-(methylenedioxy)isoquinoline