(5-bromomethyl-3-methyl-4-propyl-pyrrol-2-yl)-(5-bromomethyl-3-methyl-4-propyl-pyrrol-2-ylidene)-methane; hydrobromide 、 alkaline earth salt of/the/ methylsulfuric acid 在
丁二酸 作用下,
生成
3,3'-(3,8,12,17-tetramethyl-7,13-dipropyl-porphyrin-2,18-diyl)-di-propionic acid