tert-butyl 4-((6-hydroxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl)piperazine-1-carboxylate 、
5-(2-morpholinoethoxy)-1H-indole-3-carboxaldehyde 在
哌啶 silica gel 、
chloroform methanol 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以to obtain tert-butyl (Z)-4-[(6-hydroxy-2-{[5-(2-morpholinoethoxy)-1H-indol-3-yl]methylene}-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.076 g, 81%)的产率得到tert-butyl (Z)-4-[(6-hydroxy-2-{[5-(2-morpholinoethoxy)-1H-indol-3-yl]methylene}-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate