Process for the synthesis of N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids
US7294740B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2007 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | May 18, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D215/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.