聚合甲醛 、
(Z)-6-hydroxy-2-[(2-methyl-1H-indol-3-yl)methylene]benzofuran-3(2H)-one 、
N-Boc-哌嗪 在
silica gel 、
chloroform methanol 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以to obtain tert-butyl (Z)-4-({6-hydroxy-2-[(2-methyl-1H-indol-3-yl)methylene]-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate (0.032 g, 36%)的产率得到tert-butyl (Z)-4-({6-hydroxy-2-[(2-methyl-1H-indol-3-yl)methylene]-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate