C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 45/59 (2006.01) C07C 49/293 (2006.01)
Patent
CA 2264597
Disclosed is a process for the preparation of cyclopropanecarboxaldehyde by the isomerization of 2,3-dihydrofuran wherein 2,3-dihydrofuran is contacted with a catalyst selected from alumina, silica-alumina, silica, zirconia, titania and mixtures thereof having a nitrogen BET surface area of 10 to 350 square meters per gram at elevated temperature.
L'invention concerne un procédé de préparation de cyclopropanecarboxaldéhyde par isomérisation de 2,3-dihydrofurane, ce qui consiste à mettre en contact 2,3-dihydrofurane avec un catalyseur sélectionné dans oxyde d'aluminium, dioxyde de silicium-oxyde d'aluminium, dioxyde de silicium, zircone, dioxyde de titane et leurs mélanges présentant une zone de surface de BET d'azote de 10 à 350 mètres carrés au gramme à température élevée.
Liang Shaowo
Price Timothy Warren
Eastman Chemical Company
Gowling Lafleur Henderson Llp
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