Process for producing 2-methyl-1,4-naphthoquinone

Details Process for producing 2-methyl-1,4-naphthoquinone Process for producing 2-methyl-1,4-naphthoquinone

1987-05-19

1990-03-06

Garner, Vivian

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

Organic compounds

Cyclohexadiene having atoms double bonded directly at the 1-...

C07C 4602, C07C 4604, C07C 5012

Patent

active

049064118

ABSTRACT:
An improved process for producing 2-methyl-1,4-naphthoquinone with a high yield comprising reaction of a 1-lower-alkoxy-2-methyl naphthalene with hydrogen peroxide in the presence of a hexacyanoferric acid or a salt thereof as catalyst. This process does not employ hazardous chromium compounds unlike conventional methods.

REFERENCES:
patent: 4482493 (1984-11-01), Matsumoto et al.
patent: 4632782 (1986-12-01), Komatsu et al.

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