发明人何建平,孙丽萍,陈志强. "一种3-(1-ethyl-1H-pyrazol-4-yl)-7-oxa-2-azaspiro[3.5]nonan-1-one的合成方法" [P]. 中国发明专利, 专利号 CN 113324710 A, 授权公告日 2021-11-07.
发明人孙丽萍,冯建国,唐晓军. "Method for the Synthesis of 3-(1-ethyl-1H-pyrazol-4-yl)-7-oxa-2-azaspiro[3.5]nonan-1-one" [P]. 中国发明专利, 专利号 CN 111035780 A, 授权公告日 2018-09-12.
发明人胡光,马晓峰,徐明华. "A Process for Preparing High-Purity 3-(1-ethyl-1H-pyrazol-4-yl)-7-oxa-2-azaspiro[3.5]nonan-1-one" [P]. 中国发明专利, 专利号 CN 108681606 B, 授权公告日 2025-04-18.
参考文献 Literature
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