Method of making d,l-.alpha.-tocopherol

Details Method of making d,l-.alpha.-tocopherol Method of making d,l-.alpha.-tocopherol

1997-01-03

1999-05-04

Trinh, Ba K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31172

Patent

active

059004940

ABSTRACT:
A process for the manufacture of d,l-.alpha.-tocopherol by condensing trimethylhydroquinone with isophytol comprises carrying out the condensation in the presence of a polyperfluoroalkylenesulphonic acid as the catalyst and in a solvent, especially an aprotic solvent. The catalyst is preferably a polyperfluoroalkylenesulphonic acid from the Nafion.RTM. series, e.g., Nafion NR 50.RTM. or Nafion 117.RTM..

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Chemical Abstract 103:123731s, 1985.
Chemical Abstract 110:39217, 1987.
Derwent Abstract No. 43517V/24, 1974.
Olah, George A. et al., Synthesis, pp. 513-531 (Jul. 1986).

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