申请人:Sandoz, Inc.
公开号:US04192876A1
公开(公告)日:1980-03-11
Anti-allergic 4-hydroxy-3-nitro-quinoline-2(1H)-ones are prepared by reacting an isatoic anhydride with the carbanion resulting from the treatment of nitro acetic acid alkyl esters with a proton abstracting agent.
抗过敏4-羟基-3-硝基喹啉-2(1H)-酮是通过将异噻酸酐与从硝基乙酸烷基酯处理产生的负离子反应,使用质子提取剂进行制备的。