3'-chloro-1-methyl-2-thioxo-7',8'-dihydro-6'H-spiro[imidazolidine-4,5'-isoquinolin]-5-one 、
叔丁基过氧化氢 、
水 、
甲醇 、
氨 以to provide 2-amino-3′-chloro-1-methyl-7′,8′-dihydro-6′H-spiro[imidazole-4,5′-isoquinolin]-5(1H)-one (210 mg, 31.6% yield) as a solid的产率得到2-amino-3'-chloro-1-methyl-7',8'-dihydro-6'H-spiro[imidazole-4,5'-isoquinolin]-5(1H)-one