abstract:Cyclododecatriene C12H18 is a cycloalkene with three alkene groups. The 1,5,9-trans-trans-cis isomer has some industrial importance 1995 figures for global annual capacity 8000 ton and is obtained by cyclotrimerization of butadiene with titanium tetrachloride and an organoaluminium co-catalyst:Industrial Organic Chemistry, Klaus Weissermel, Hans-Jurgen Arpe John Wiley & Sons; 3rd 1997 ISBN 3-527-28838-4