1-chloromethylcyclopentanamine hydrochloride 、
4-nitro-5,6,7,8-tetrahydronaphth-1-yl isothiocyanate 以to give 2-(4-nitro-5,6,7,8-tetrahydro-1-naphthylimino)-3-thia-1-azaspiro[4.4]nonane的产率得到2-(4-nitro-5,6,7,8-tetrahydro-1-naphthylimino)-3-thia-1-azaspiro[4.4]nonane