Process for the preparation of .alpha.-tocopherol derivatives, a

Details Process for the preparation of .alpha.-tocopherol derivatives, a Process for the preparation of .alpha.-tocopherol derivatives, a

1995-12-18

1997-03-11

Caldarola, Glenn A.

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

Clay

502355, B01J 2114

Patent

active

056101139

ABSTRACT:
A process is provided for the preparation of an .alpha.-tocopherol derivatives which are useful as antisterile vitamins, hypolipidemic 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): ##STR1## wherein n stands for 0 or an integer of from 1 to 5. The derivative 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.

REFERENCES:
patent: 5043511 (1991-08-01), Imai et al.

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