Noun
triazoline (plural triazolines)
(organic chemistry) An unsaturated five-membered heterocycle having two carbon atoms, three nitrogen atoms and one double bond (between two of the nitrogen atoms); any derivative of this compound
Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
With benzo-Smith’s diene 152 as a substrate, reaction was achieved at the cyclobutene-1,2-diester π-bond to form a triazoline adduct 153, which was transformed to the aziridine 154 by UV irradiation.