Abstract The Koloe oxidation of cis-dicarboxylic acids is a convenient method for clafin synthesis 1, 2, 3. In an earlier communication 1 one of us reported the synthesis of Tryicyclo [4.2. 2.02, 5] deca-3, 7, 9-triane (Nenitzescu's hydrocarbon) by this method. In view of the interest in the (CH) 10 energy surface, any entry at the C10H10 level immediately malcas & wide range of ring structure potentially available. 4 For this reason we have chosen to ...