Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-04-13
1990-12-11
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549413, C07D31172
Patent
active
049772821
ABSTRACT:
Quantities of natural tocopherol can be aminoalkylated to selectively introduce functional groups onto the 5 and 7 positions of the non-alpha-tocopherol homologues. Natural d-alpha-tocopherol can then be separated from the aminoalkylated non-alpha-tocopherols as salts. After separation the adducts can then be reduced by hydrogenolysis, thereby upgrading vitamin E activity by making d-alpha-tocopherol out of the intermediate tocopherol adducts. Salts of these adducts can be crystallized by contacting the adducts with phosphoric acid. Salts will form upon acetic acid addition, and the delta-tocopherol adduct acetate can be isolated as a crystalline solid. The adducts can also be regenerated from the salts and transformed to alpha-tocopherol by reduction of the adduct.
REFERENCES:
patent: 2519863 (1950-08-01), Weisler
Baldwin William S.
Siegel Brock M.
Willging Stephen M.
Chan Nicky
Henkel Corporation
Jaeschke Wayne C.
Span Patrick J.
Szoke Ernest G.
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