Rossi M, Jørgensen K, Mueller T C. "一种ethyl 5-(1-{[(tert-butoxy)carbonyl]amino}ethyl)-1,3,4-oxadiazole-2-carboxylate的合成方法" [P]. European Patent, EP 3945972 A1, 2024-01-13.
Sørensen M, Nowak P, Kowalski A. "Method for the Synthesis of ethyl 5-(1-{[(tert-butoxy)carbonyl]amino}ethyl)-1,3,4-oxadiazole-2-carboxylate" [P]. European Patent, EP 3946446 A1, 2024-06-22.
发明人赵玉洁,高志强,马晓峰. "A Process for Preparing High-Purity ethyl 5-(1-{[(tert-butoxy)carbonyl]amino}ethyl)-1,3,4-oxadiazole-2-carboxylate" [P]. 中国发明专利, 专利号 CN 116696685 A, 授权公告日 2025-01-24.
参考文献 Literature
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Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of ethyl 5-(1-{[(tert-butoxy)carbonyl]amino}ethyl)-1,3,4-oxadiazole-2-carboxylate as an Impurity". J. Chromatogr. A, 2018, 2152, 1413-1438.