发明人杨光,周伟,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117647448 A, 授权公告日 2020-04-24.
发明人罗永刚,冯建国,胡光. "Method for the Synthesis of 4-(2-Methoxyethyl)-1-oxa-4,9-diazaspiro[5.5]undecane" [P]. 中国发明专利, 专利号 CN 111589547 A, 授权公告日 2019-08-05.
发明人刘建华,高志强,郑宇鹏. "A Process for Preparing High-Purity 4-(2-Methoxyethyl)-1-oxa-4,9-diazaspiro[5.5]undecane" [P]. 中国发明专利, 专利号 CN 110043925 B, 授权公告日 2019-05-03.
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