! O) We found actually that V, Vi, VIIi. and IX were not stable to the reaction conditions and that their concentrations therefore varied during the course of the reaction.(21) AE Favorskii, J. Russ. Phys. Chem. SOC., 19, 553 (1887); for a general review see SA Vartanyan and S. 0. Babanyan, Russ. Chem. Rev., 36, 670 (1967)
