1,3-Dipolar character of six-membered aromatic rings. Part 33. Transformations of cycloadducts derived from 3-oxido-1-triazinylpyridiniums
Abstract
1-(4,6-Diphenyl- and 4,6-dimethoxy-s-triazin-2-yl)-3-oxidopyridinium betaines were prepared as dimers which dissociate to yield adducts with a variety of 2 and 4 π-electron dipolarophiles. Transformations of the adducts are described, including examples of the hydrolytic removal of the triazinyl group.