J. Lorans et al., ANODIC COOXIDATION OF URAZOLE AND FERROCENES - FIRST TRAPPING OF CYCLOPENTADIENOLS, Chemical communications, (14), 1997, pp. 1279-1280
Cyclopentadien-5-ols, the major products resulting from decomposition
of some ferrocenium cations by molecular oxygen, are regio- and stereo
-selectively trapped by 4-phenyl-1,2,4-triazoline-3,5-dione.