Processes for the preparation of hydroquinone and benzoquinone derivatives
US5637716A · kind A · utility
2Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Dec 27, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Dec 27, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Intermediates for the preparation of benzothiazole derivatives useful for the prevention and treatment of diseases for which an inhibitory action against the production of leukotriene and thromboxane is efficacious, and industrially advantageous processes for the preparation of the intermediates. A hydroquinone derivative is condensed with a pyridylcarboxyaldehyde derivative without the protecting the hydroxyl groups of the hydroquinone derivative to form a pyridylmethylhydroquinone derivative, which is further oxidized into a pyridylmethyl-1,4-benzoquinone derivative: ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.