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