发明人黄志刚,林芳,刘建华. "一种6-氯-2-氧代-2H-色烯-3-羧酸乙酯的合成方法" [P]. 中国发明专利, 专利号 CN 112931761 A, 授权公告日 2021-09-13.
发明人孙丽萍,唐晓军,胡光. "Method for the Synthesis of Ethyl 6-chloro-2-oxo-2H-chromene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 108207281 A, 授权公告日 2020-04-06.
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