Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1995-06-02
1997-09-02
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D31172
Patent
active
056633769
ABSTRACT:
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:
REFERENCES:
patent: 4168271 (1979-09-01), Cardenas et al.
Hayashi Kenji
Hirose Noriyasu
Horikawa Yuh
Inoue Hiroshi
Iwata Noriyoshi
Chan Nicky
Eisai Co. Ltd.
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