Department of Chemistry;
Facultyof Science;
Damietta University;
Damietta;
Egypt;
Department of Chemistry;
Facultyof Science;
Damietta University;
Damietta;
Egypt.;
Pyrrole; Pyridine; Pyrazolo4; 3-b; Pyridine; Pyrano3; 2-c; Quinoline; Naphthopyran; Naphthodipyrans; and; Coumarin;