Purification of tocopherols

Details Purification of tocopherols Purification of tocopherols

1985-02-11

1986-10-14

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549213, C07D31172

Patent

active

046174060

ABSTRACT:
Tocopherol homologues found in a tocopherol-containing feed material can be purified by forming a borate tocopherol ester and then distilling the material containing the esterified tocopherol to remove the materials boiling at temperatures lower than the esterified tocopherol. The borate tocopherol esters remaining after distillation are then reacted with a member selected from the group consisting of: Water, methanol, and ethanol to form tocopherol homologues from the borate tocopherol ester, and the boron by product from this reaction is removed. The tocopherol is then recovered by collecting it, distilling it or by any other convenient collection method.

REFERENCES:
patent: 3338922 (1967-08-01), Kijima et al.
Nakamura et al., Chem. Pharm. Bull., 20, 1681 (1972).

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