发明人徐明华,何建平,黄志刚. "Method for the Synthesis of tert-Butyl 4-(1-ethoxy-1-oxopropan-2-ylidene)piperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 108382381 B, 授权公告日 2016-12-17.
发明人刘建华,韩伟,朱建伟. "A Process for Preparing High-Purity tert-Butyl 4-(1-ethoxy-1-oxopropan-2-ylidene)piperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113145833 A, 授权公告日 2018-02-19.
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