Preparation of .alpha.-tocopherol or .alpha.-tocopheryl acetate

Details Preparation of .alpha.-tocopherol or .alpha.-tocopheryl acetate Preparation of .alpha.-tocopherol or .alpha.-tocopheryl acetate

1997-12-12

1999-12-21

McKane, Joseph K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549411, 549412, C07D31172

Patent

active

060051221

ABSTRACT:
A process for preparing .alpha.-tocopherol or .alpha.-tocopheryl acetate by reacting 2,3,5-trimethylhydroquinone with isophytol or phytol in the presence of a zinc halide condensation catalyst and a proton donor in a solvent with or without subsequent esterification with acetic anhydride, which comprises

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Makoto Matsui, et al.; Synthesis of a-Tocopherol: Scandium (III) Trifluoromethanesulfonate as an Efficient Catalyst in the Reaction of Hydroquinone with Allylic Alcohol; Bull. Chem. Soc. Jpn., 68, 3569-3571 (1995).
Makoto Matsui, et al.; Bull. Chem. Soc. Jpn. 69, 137-139 (1996); Metal Ion-Exchanged Montmorillonites as Practical and Useful Solid Catalysts for the Synthesis of a-Tocopherol.
Weast, Robert, Ed. in Chief, CRC Handbook of Chemistry and Physics, 64.sup.TH edition, 1983-84.

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