crotyltriphenylphosphonium bromide 、
dimethyl 3-formyl-9-hydroxy-1-oxo-6,7-dihydro-2H-cyclopenta[g]isoquinoline-8,8-dicarboxylate 在
正丁基锂 、
碘 作用下,
生成 、 dimethyl 9-hydroxy-1-oxo-3-[(1E,3E)-penta-1,3-dienyl]-6,7-dihydro-2H-cyclopenta[g]isoquinoline-8,8-dicarboxylate