发明人赵玉洁,王建平,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116668607 A, 授权公告日 2022-05-10.
发明人刘建华,孙丽萍,冯建国. "Method for the Synthesis of tert-Butyl 7-oxo-2-azaspiro[4.4]nonane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 110521094 B, 授权公告日 2023-10-22.
Roberts E F, Park J H, Klinger H. "A Process for Preparing High-Purity tert-Butyl 7-oxo-2-azaspiro[4.4]nonane-2-carboxylate" [P]. US Patent, US 10100487 B2, 2025-05-13.
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