Process for the manufacture of o-nitrobenzaldehyde
US4689433A · kind A · utility
3Cited by
0References
5Claims
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Key dates
| Filing date | Jun 10, 1986 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Jun 10, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the manufacture of o-nitrobenzaldehyde by oxidation of o-nitrotoluene, characterized in that o-nitrotoluene is made to react with an aqueous solution containing Cerium.sup.iv perchlorate and from 5 to 9 moles/liter of perchloric acid; according to a preferred embodiment, the dispersion of o-nitrotoluene in an aqueous solution containing from 5 to 9 moles per liter of perchloric acid is first prepared and then an aqueous solution is gradually added, containing Cerium.sup.iv perchlorate and 5-9 moles/liter of perchloric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.