Photochemistry of halogenocarbon compounds. Part 5. Photolysis of fluorinated 1,2,3-triazine derivatives

Photolysis experiments are described on perfluoro-1,2,3-triazine (9) and its corresponding perfluoro-isopropyl derivatives. A polymer was obtained from (9) but a dimer of perfluoro-2,4-di-isopropylazete (16) is obtained, from (15) quantitatively. The endo structure of the dimer is revealed by formation of a stable carbanion on addition of CsF. Trapping of the azete (16) with furan gave interconvertible 1 :1 cycloaddition products. Products consistent with co-dimerisation of azetes are described.