Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-10-07
1977-11-29
Helfin, Bernard
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C 4100
Patent
active
040605582
ABSTRACT:
3-Prenyl-substituted-2-alkyl menaquinones are made by reacting an alkali metal salt of a 3-alkyl-4-alkoxy or aralkoxy-1-naphthol with a prenyl halide, and oxidizing the resulting 2-prenyl-3-alkyl-4-alkoxy or aralkoxy-1-naphthol to the corresponding 3-prenyl-substituted-2-alkyl menaquinone. There is also disclosed a procedure for making the alkali metal salts involving the preparation of an ether-ester and hydrogenolysis.
REFERENCES:
patent: 487204 (1892-11-01), Ach
patent: 1792716 (1931-02-01), Stockelbach
patent: 2807643 (1957-09-01), Hartley
Rapoport Henry
Snyder Clinton D.
Helfin Bernard
The Regents of the University of California
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