1. Applied Organic Chemistry Department, National Research Centre, Dokki 12622, Giza, Egypt
2. Chemistry Department, Faculty of Science, Ain Shams University, Abbasia, Cairo 11566, Egypt
3. Department of Tanning Materials and Leather Technology, National Research Centre, Dokki, Cairo 12622, Egypt
4. Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
5. Organic Chemistry Department, Chemical Industries Research Division, National Research Centre, Cairo 12622, Egypt