Björnsson E, Mueller T C, Johansson L. "Method for the Synthesis of tert-Butyl 4,4-difluorobut-2-enoate" [P]. European Patent, EP 3945206 A1, 2022-03-26.
发明人周伟,杨光,李文辉. "A Process for Preparing High-Purity tert-Butyl 4,4-difluorobut-2-enoate" [P]. 中国发明专利, 专利号 CN 112948257 A, 授权公告日 2019-02-23.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2015, 788, (10), 502-513.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2012, 2194, (3), 1277-1290.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 4,4-difluorobut-2-enoate Using HRMS and NMR". Anal. Chim. Acta, 2013, 148, 2942-2971.