Process for preparing 3-alkyl-4-alkoxy-1-naphthols

Details Process for preparing 3-alkyl-4-alkoxy-1-naphthols Process for preparing 3-alkyl-4-alkoxy-1-naphthols

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

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