1. National Research Centre, Chemical Industry Research Institute, Dokki, Giza, P.O. Box 12622, Egypt
2. Department of Chemistry,
Faculty of Science, Jazan University, Jazan, P.O. Box 45142, Saudi Arabia
3. Synthetic Heterocycles Laboratory, Department of
Chemistry, Faculty of Science, Ain Shams University, Cairo, P.O. Box 11566, Egypt
4. Department of Chemistry, Faculty of Science,
Benha University, Benha, P.O. Box 13518, Egypt