(1S,3R)-methyl-2-benzyl-1-(3-diazo-4-methoxy-2,4-dioxobutyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate 在
rhodium(II) acetate dimer 作用下,
以
苯 为溶剂,
反应 2.0h,
以75%的产率得到(R,E)-methyl-2-benzyl-1-(4-methoxy-2,4-dioxobutylidene)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate