发明人李文辉,钱学锋,刘建华. "Method for the Synthesis of Tert-butyl 7'-bromo-4'-hydroxyspiro[azetidine-3,2'-chromane]-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113029025 B, 授权公告日 2017-03-17.
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