5-[2-ethoxy-5-(1-methyl-3-ethoxypropane-1,3-dione-2-ylsulfonyl)phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one 、
邻苯二胺 在
lanthanium(III) nitrate hexahydrate 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以70.3%的产率得到5-[2-ethoxy-5-(4-methyl-1,3-dihydro-1,5-benzodiazepine-2-one-3-sulfonyl)phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one