Process for preparing cycloalkadienes
AssigneeSymrise AG
InventorsIngo Wohrle, Peter Esser, Aurelia Reckziegel, Matthias Brandt, Stephan Klein, Thomas Turek
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Abstract
The present invention relates to a process for preparing cycloalkadienes using supported catalysts based on Re2O7/γ-Al2O3 and also to the use of the resulting cycloalkadienes for the preparation of fragrances.
Claims5
A process for preparing a cycloalkadiene comprising the step of metastasizing a cycloalkamonoene, a cyclopolyene, an acyclic polyene or mixtures thereof in the liquid phase, in the presence of a shaped supported catalyst body comprising Re2O7/γ-Al2O3, wherein the calculated specific external surface area of the shaped supported catalyst body is greater than or equal to 3.5 mm2/mm3.
A fragrance comprising a cycloalkadiene prepared by metastasizing a cycloalkamonoene, a cyclopolyene, an acyclic polyene or mixtures thereof in the liquid phase, in the presence of a shaped supported catalyst body comprising Re2O7/γ-Al2O3, wherein the calculated specific external surface area of the shaped supported catalyst body is greater than or equal to 3.5 mm2/mm3.
Dependencies are inferred from the claim text.