Definition of heteroarynes

1. Compounds derived from heteroarenes by replacement of a formal carbon-carbon double bond by a formal triple bond (with loss of two hydrogen atoms). Also known as hetarynes and as 1,2-didehydroheteroarenes. See arynes. H. J. den Hertog and H. C. van der Plas, in Advances in Heterocyclic Chemistry, Ed. A. R. Katritzky, Vol. 4, Academic Press, 1965, p. 121. E.g.