申请人:SmithKline Corporation
公开号:US04272440A1
公开(公告)日:1981-06-09
5-(5'-Halo-2'-methoxyphenyl)-3,4-dihalo-2(5H)-furanones are prepared by a Friedel-Crafts reaction using a p-haloanisole and a mucohalic acid in the presence of aluminum chloride. They are used as chemical intermediates for preparing hydroxyphenylpyridazinones.
5-(5'-卤代-2'-甲氧基苯基)-3,4-二卤代-2(5H)-呋喃酮是通过在铝氯化物存在下使用对卤代苯甲醚和黏液酸进行Friedel-Crafts反应制备的。它们用作制备羟基苯基吡嗪酮的化学中间体。