Reactions of large tetraaza-N,N'-dihydroacenes: formation of unexpected adducts and an unstable tetraazahexacene

J Org Chem. 2013 Feb 1;78(3):1249-53. doi: 10.1021/jo3024544. Epub 2013 Jan 14.

Abstract

We report the reaction of several N,N'-dihydrotetraazaacenes with oxalylic chloride to give unusual adducts, which were characterized by single-crystal X-ray structures.