Process for the preparation of .alpha.-tocopherol

Details Process for the preparation of .alpha.-tocopherol Process for the preparation of .alpha.-tocopherol

C - Chemistry, Metallurgy

07

D

C07D 311/72 (2006.01)

Patent

CA 2154605

A process is provided for the preparation of .alpha.-tocopherol. According to the process, a condensation reaction between trimethylhydroquinone and a specific phytol derivative or isophytol is conducted in the presence of any one of the following solvents: (i) a carbonate ester, (ii) a lower fatty acid ester represented by the formula R1COOR2 wherein R1 means a lower alkyl group having 1-4 carbon atoms and R2 means a lower alkyl group having 1-5 carbon atoms, with the proviso that methyl acetate and ethyl acetate are excluded; and (iii) a mixed solvent of a nonpolar solvent and a lower alcohol having 1-5 carbon atoms.

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