发明人王建平,朱建伟,韩伟. "Method for the Synthesis of (E)-Ethyl 2-(1-bromoethylidene)-6-chloro-1-vinyl-1,2-dihydropyrimidine-5-carboxylate
1785773-35-4" [P]. 中国发明专利, 专利号 CN 112983072 B, 授权公告日 2020-11-20.
发明人周伟,沈红梅,郭海燕. "A Process for Preparing High-Purity (E)-Ethyl 2-(1-bromoethylidene)-6-chloro-1-vinyl-1,2-dihydropyrimidine-5-carboxylate
1785773-35-4" [P]. 中国发明专利, 专利号 CN 116121632 A, 授权公告日 2018-09-06.
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