C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/692.4
C07C 2/00 (2006.01) B01J 31/38 (2006.01) B01J 37/22 (2006.01) C07C 2/46 (2006.01)
Patent
CA 1055052
ABSTRACT Process for preparing 1,5,9-cyclododecatriene by contacting butadiene with a catalyst system resulting from the mixing of an aluminum composition of the structure Z(2.5-3.5)Al2Cl(3.5-2.5) wherein Z is selected from the group consisting of alkyl radicals containing from 2 to 4 carbon atoms and the phenyl radical; a titanium compound of the formula TiA4 wherein A is selected from the class consisting of C1, Br, I and OR wherein R is an organic radical of from 1 to 20 carbon atoms; and a promoter for the catalyst system wherein the promoter is selected from the group consisting of water, oxygen and oxygen-contain- ing organic compounds, at a temperture in the range of 20 to 120°C. and at a pressure of 0.5 to 50 atmoshperes and recovering cyclododecatriene-1,5,9 along with by- products 1,5-cyclooctadiene and 4-vinylcyclohexene, the improvement which comprises adding an iodide-containing composition or compound selected from the group consist- ing of Z(2.5-3.5)Al2I(3.5-2.5), Z2AlI, ZAlI2, and I2 wherein Z has the above meaning, the molar ratio of iodine or iodide-containing composition or compound to aluminum composition being in the range of 0.05:10 to 5:10. - 1 -
231102
Rapoport Morris
Sullivan David L.
E.i. Du Pont de Nemours And Company
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