Method for industrially preparing nitrogen substituted amino-5,6,7,8-tetrahydronaphthol
US8809590B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 21, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Jun 21, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for industrially preparing a nitrogen substituted 6-amino-5,6,7,8-tetrahydronaphthol includes reacting a nitrogen substituted amino-5,6,7,8-tetrahydronaphthol compound of formula (II) with a 2-substituted ethyl sulfonate compound of formula (III) under an alkaline condition and in the presence of a sulfite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.