Synthetic transformations of cyclododecene (I) have been studied in sufficient detail [1]. This compound has become accessible due to development of large-scale manufacture of cyclododeca-1, 5, 9-triene by trimerization of butadiene over titanium-and nickelcontaining catalysts. An important product of transformations of cyclododecene (I) is cyclododecanol (II) which is used as starting material for the synthesis of dodecanedioic acid, dodecane-1, 12 ...