“Base Catalyzed Intra Molecular Wittig Reaction Between [2-Ethoxy-3-(4-Substituted Phenyl)-2-Propenylidene] Triphenyl Phosphonium Bromides With Bifunctional Carbonyl Compounds”. 2007. Dhaka University Journal of Pharmaceutical Sciences 3 (1). https://doi.org/10.3329/dujps.v3i1.176.