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3-二氟甲氧基-2,4,5-三氟苯甲酸的合成 被引量:3

Synthesis of 3-Difluoromethoxy-2,4,5-trifluorobenzoic acid
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摘要 3-羟基-2,4,5-三氟苯甲酸酯化后在溴化四丁铵参与下与二氟氯甲烷进行醚化反应得到3-二氟甲氧基-2,4,5-三氟苯甲酸乙酯,再经水解得到氟喹诺酮类抗菌剂的中间体3-二氟甲氧基-2,4,5-三氟苯甲酸,总收率74%。 Difluoromethoxy-2,4,5-trifluorobenzoic acid was synthesized from 3-hydroxy-2,4,5-trifluorobenzoicacid by esterification, etherification with CHClF2 in presence of Bu4NBr to afford ethyl 3-difluromethoxy-2,4,5-trifluorobenzoate which subjected to hydrolysis in an overall yield of 74%.
作者 仲琰 吴斌
出处 《中国医药工业杂志》 CAS CSCD 北大核心 2004年第11期648-649,共2页 Chinese Journal of Pharmaceuticals
关键词 3-二氟甲氧基-2 4 5-三氟苯甲酸 氟喹诺酮 抗菌剂 中间体:合成 difluoromethoxy-2,4,5-trifluorobenzoic acid fluoroquinolone antibacterial intermediate synthesis
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