发明人唐晓军,李文辉,王建平. "Method for the Synthesis of tert-Butyl 7-(difluoromethyl)-2,6-diazaspiro[3.4]octane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 109972525 A, 授权公告日 2021-09-25.
Mueller T C, Schröder R, Nielsen H. "A Process for Preparing High-Purity tert-Butyl 7-(difluoromethyl)-2,6-diazaspiro[3.4]octane-2-carboxylate" [P]. European Patent, EP 3150273 A1, 2015-03-21.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2019, 2285, 4375-4383.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2011, 1109, 7842-7869.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 7-(difluoromethyl)-2,6-diazaspiro[3.4]octane-2-carboxylate Using HRMS and NMR". J. Sep. Sci., 2016, 571, 9144-9158.