Process for producing 2-methyl-1,4-naphthoquinone
US4906411A · kind A · utility
9Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | May 19, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C46/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.