抄録
No reliable report is found on ammonium salts of dehydroacetic acid and 3-acetyl-4-hydroxycoumarin. Therefore, these salts were prepared and their properties were examined. These ammonium salts are comparatively labile and tends to liberate ammonia gradually during storage. The most interesting was their behavior in solution. The solution of the ammonium salt of dehydroacetic acid or 3-acetyl-4-hydroxycoumarin in polar solvent, like water and alcohol, converts into monoimide under a very mild condition.
