Al-Saad, M.A., and A.A.M. Jum’H. “Triphosgene in Heterocyclic Chemistry, Novel Synthesis of Pyrazolo (2, 3-C) Quinazoline from 2-Acetamido Acetophenone Hydrazone”. Asian Journal of Chemistry 12, no. 3 (March 30, 2010): 655–658. Accessed November 5, 2024. https://asianpubs.org/index.php/ajchem/article/view/23038.