3,4-二氯硝基苯 、
4-哌啶酮缩乙二醇 以The title compound 3.05 g (quantitative) was obtained in a manner similar to the Manufacturing Example 25 by use of 3,4-dichloronitrobenzene and 1,4-dioxa-8-azaspiro[4.5]decane的产率得到8-(2-chloro-4-nitrophenyl)-1,4-dioxa-8-azaspiro[4.5]decane