发明人王建平,钱学锋,孙丽萍. "Method for the Synthesis of tert-Butyl 4-(2-Ethoxy-1,1-difluoro-2-oxoethyl)-4-hydroxypiperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 109374746 A, 授权公告日 2023-03-16.
发明人徐明华,胡光,陈志强. "A Process for Preparing High-Purity tert-Butyl 4-(2-Ethoxy-1,1-difluoro-2-oxoethyl)-4-hydroxypiperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 109172205 B, 授权公告日 2024-04-27.
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