Y. Raoof, M., M. Saied, S. and S. AL. Gawady, M. 2011. 2-Phenylchroman-4-one as Synthone in Synthesis of New Five and Six Membered Rings Heterocyclic Compounds. Journal of Education and Science. 24, 4 (Dec. 2011), 50–59. DOI:https://doi.org/10.33899/edusj.1970.58954.