Wr. Dolbier et Kw. Palmer, PHOTOCHEMICAL ELECTROCYCLIZATION OF PERFLUORO-E,Z,E-4,5-DIMETHYL-2,4,6-OCTATRIENE, Tetrahedron letters, 34(39), 1993, pp. 6201-6204
Photolysis of the title compound leads to a clean 6-pi conrotatory ele
ctrocyclic reaction followed by a less-efficient 4-pi disrotatory elec
trocyclic process.