Process for the preparation of .alpha.-tocopherol...

Details Process for the preparation of .alpha.-tocopherol... Process for the preparation of .alpha.-tocopherol...

B - Operations, Transporting

01

J

B01J 23/10 (2006.01) B01J 21/16 (2006.01) C07D 311/72 (2006.01)

Patent

CA 2146799

ABSTRACT A process is provided for the preparation of an .alpha.-tocopherol derivatives which are useful as antisterile vitamins, hypolipidemics, blood flow increasing agents, anti-cytosenility agents, antioxidants and the like. Catalysts are also provided. The .alpha.-tocopherol derivatives are represented by the following formula (VII): Image (VII) wherein n stands for O or an integer of from 1 to 5. The derivatives can be industrially prepared by employing as catalyst a metal ion-exchanged montmorillonite, metal ion- exchanged bentonite or metal ion-exchanged saponite which is substituted with one metal ion selected from the group consisting of scandium, yttrium, lanthanide element, aluminium, iron, tin, copper, titanium, zinc, nickel, gallium or zirconium.

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