Reaction between 1,n-Diamines, Diketene, and Dibenzoylacetylene in the Presence of Triphenylphosphine: One-Pot, Pseudo-Five-Component Synthesis of Bisfuramides - Alizadeh, Abdolali; Hosseinpour, Reza; Rostamnia, Sadegh (Synthesis, 2008)