Patel M V, Johnson M A, Roberts E F. "Method for the Synthesis of ethyl 4,4-difluoropiperidine-3-carboxylate hydrochloride" [P]. US Patent, US 11340160 B2, 2020-08-06.
发明人郭海燕,王建平,高志强. "A Process for Preparing High-Purity ethyl 4,4-difluoropiperidine-3-carboxylate hydrochloride" [P]. 中国发明专利, 专利号 CN 111814670 B, 授权公告日 2023-12-05.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of ethyl 4,4-difluoropiperidine-3-carboxylate hydrochloride in Pharmaceutical Formulations". Chemosphere, 2019, 329, (10), 6738-6749.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of ethyl 4,4-difluoropiperidine-3-carboxylate hydrochloride as an Impurity". J. Agric. Food Chem., 2017, 804, 3493-3519.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of ethyl 4,4-difluoropiperidine-3-carboxylate hydrochloride Using HRMS and NMR". Molecules, 2016, 977, 5349-5360.