Synthesis & Characterization of Oxazinan and 5-oxa-7-aza-spiro[2,5] octane from reaction of Dibenzylidene with malonic anhydride and 5-oxa-spiro[2,3] hexane-4,6-dione. (2007). Baghdad Science Journal, 4(2), 276-284. https://doi.org/10.21123/bsj.2007.4.2.276-284