In continuation of our previous work on 3-carbethoxycoumarin [I), we are dealing in this paper with the reaction of 7-hydroxy-3-carbetho­xycoumarin (1) with hydrazines, amines and Grignard reagents. Some reagents affected fission of the coumarin ring while others reacted with the carbet­hoxy group.


MM MOHAMED ,M A HASSAN ,M EL BORAI ,