发明人王建平,冯建国,罗永刚. "Method for the Synthesis of 2-Azaspiro[3.5]nonan-7-one" [P]. 中国发明专利, 专利号 CN 108077309 A, 授权公告日 2020-10-22.
Mueller T C, Martínez F, Lefèvre J P. "A Process for Preparing High-Purity 2-Azaspiro[3.5]nonan-7-one" [P]. European Patent, EP 3801611 A1, 2021-06-28.
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