发明人王建平,孙丽萍,沈红梅. "一种3-(3-硝基苯基)-1,4-二氮杂螺[4.4]壬烷-2-酮的合成方法" [P]. 中国发明专利, 专利号 CN 114647568 A, 授权公告日 2023-06-28.
Park J H, Williams B T, O'Brien P Q. "Method for the Synthesis of 3-(3-Nitrophenyl)-1,4-diazaspiro[4.4]nonan-2-one" [P]. US Patent, US 11151033 B2, 2020-07-12.
发明人孙丽萍,刘建华,赵玉洁. "A Process for Preparing High-Purity 3-(3-Nitrophenyl)-1,4-diazaspiro[4.4]nonan-2-one" [P]. 中国发明专利, 专利号 CN 117337193 B, 授权公告日 2021-08-12.
参考文献 Literature
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