发明人张德明,罗永刚,冯建国. "Method for the Synthesis of tert-Butyl 3,3-difluoro-4-(2-methoxy-2-oxoethyl)piperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 109543777 B, 授权公告日 2018-09-17.
发明人高志强,郑宇鹏,唐晓军. "A Process for Preparing High-Purity tert-Butyl 3,3-difluoro-4-(2-methoxy-2-oxoethyl)piperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113482517 B, 授权公告日 2022-04-09.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2018, 1889, (5), 4040-4046.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2021, 2202, (6), 3345-3368.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 3,3-difluoro-4-(2-methoxy-2-oxoethyl)piperidine-1-carboxylate Using HRMS and NMR". J. Sep. Sci., 2013, 137, 2580-2594.