1. Department of Photochemistry (Heterocyclic Unit); National Research Center; Dokki Giza 12622 Egypt
2. Department of Chemistry, Faculty of Science; Jazan University; 2097 Jezan Saudi Arabia
3. Department of Chemistry, Faculty of Science and Arts, Ulla; Taibah University; KSA
4. Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street 35516 Mansoura Egypt