Sørensen M, Rossi M, Björnsson E. "一种(2E)-4-(4-{[2-chloro-5-(trifluoromethyl)phenyl]sulfonyl}piperazin-1-yl)-4-oxobut-2-enoic acid的合成方法" [P]. European Patent, EP 3512976 A1, 2017-05-27.
发明人徐明华,沈红梅,李文辉. "Method for the Synthesis of (2E)-4-(4-{[2-chloro-5-(trifluoromethyl)phenyl]sulfonyl}piperazin-1-yl)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 116848738 A, 授权公告日 2023-07-03.
发明人郭海燕,沈红梅,马晓峰. "A Process for Preparing High-Purity (2E)-4-(4-{[2-chloro-5-(trifluoromethyl)phenyl]sulfonyl}piperazin-1-yl)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 114036724 B, 授权公告日 2015-08-20.
参考文献 Literature
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Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of (2E)-4-(4-{[2-chloro-5-(trifluoromethyl)phenyl]sulfonyl}piperazin-1-yl)-4-oxobut-2-enoic acid as an Impurity". Chemosphere, 2015, 2093, 7323-7330.