Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Azeto[2,1-b]quinazolines 5 have been prepared by the novel intramolecular [2 + 2] cycloaddition reaction of ketenimines with imines. The applicability and limitations of the synthetic methodology, and explorations on the reactivity of compounds 5 are discussed.