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发明人郑宇鹏,赵玉洁,唐晓军. "Method for the Synthesis of tert-butyl 5-(4-fluoro-2-hydroxy-phenyl)-2-oxo-1,3,9-triazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 111100150 B, 授权公告日 2017-11-22.
Patel M V, Anderson J P, Mueller T. "A Process for Preparing High-Purity tert-butyl 5-(4-fluoro-2-hydroxy-phenyl)-2-oxo-1,3,9-triazaspiro[5.5]undecane-9-carboxylate" [P]. US Patent, US 9482122 B2, 2019-02-03.
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