?SYNTHESIS OF HETERO-BICYCLIC COMPOUNDS PART-X. FORMATION OF 2H,4H,5H 2,2-DIPHENYL-4, 5-DIOXOPYRIDO [4, 3-d] 1,3 DIOXIN. Pakistan Journal of Scientific & Industrial Research. 2003;46(6):406-408. Accessed March 10, 2026. https://www.v2.pjsir.org/index.php/biological-sciences/article/view/1687