Selective opening of five and six membered rings

Details Selective opening of five and six membered rings Selective opening of five and six membered rings

C - Chemistry, Metallurgy

07

C

C07C 5/27 (2006.01) C07C 5/31 (2006.01) C07C 6/08 (2006.01) C07C 9/14 (2006.01) C07C 13/10 (2006.01)

Patent

CA 2227900

A process for opening C5 and C6 rings without substantial cracking. A feedstream containing compounds comprised of at least one C5-ring, at least one C6-ring, or both, is contacted, in the presence of hydrogen, with a transition metal catalyst selected from the group consisting of carbides, nitrides, oxycarbides, oxynitrides, and oxycarbonitrides. The transition metal is selected from the group consisting of metals from Groups IVa, Va, and VIa of the Periodic Table of the Elements.

Procédé permettant d'ouvrir des cycles C5 et C6 sans qu'il se produise de craquage sensible. Selon ce procédé on met en contact, en présence d'hydrogène, un écoulement de départ contenant des composés constitués d'au moins un cycle C5, d'au moins un cycle C6, ou bien constitués des deux types de cycles, avec un catalyseur à métal de transition sélectionné dans le groupe formé par les carbures, les nitrures, les oxycarbures, les oxynitrures et les oxycarbonitrures. Le métal de transition est sélectionné dans le groupe constitué de métaux appartenant aux groupes IVa, Va et VIa du tableau périodique des éléments.

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