申请人:Ethyl Corporation
公开号:US04524203A1
公开(公告)日:1985-06-18
4-(4-Pyridinyl)isatoic anhydrides are prepared by reacting a 2-amino-4-(4-pyridinyl)benzoic acid, i.e., an acid, ester, or salt, with phosgene, preferably gaseous phosgene. The products are particularly useful in the preparation of antibacterial 1-alkyl-1,4-dihydro-4-oxo-7-pyridinyl-3-quinolinecarboxylic acids.
4-(4-吡啶基)异酸酐是通过将2-氨基-4-(4-吡啶基)苯甲酸(即酸、酯或盐)与光气反应制备而成,最好使用气态光气。该产品在制备抗菌的1-烷基-1,4-二氢-4-氧代-7-吡啶基-3-喹啉羧酸方面特别有用。