Islam, Md. Saiful, and Ikuo Ueda. “Base Catalyzed Intra Molecular Wittig Reaction Between [2-Ethoxy-3-(4-Substituted Phenyl)-2-Propenylidene] Triphenyl Phosphonium Bromides With Bifunctional Carbonyl Compounds”. Dhaka University Journal of Pharmaceutical Sciences 3, no. 1 (June 14, 2007). Accessed February 25, 2026. https://www.banglajol.info/index.php/JPharma/article/view/176.