Oxidation process for aromatic compound
US7488843B1 · kind B1 · utility
7Cited by
1References
10Claims
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Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Dec 15, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methylene substituted aromatic compounds can be oxidized using t-butyl hydroperoxide and microwave radiation. In particular, xylenes give primarily phthalic acids, while toluene gives benzoic acid. Other methylene substituted aromatic compounds where the methylene group is not part of a methyl group give ketones, rather than acids. For example, fluorene gives fluorenone. The process avoids the need for the presence of metals such as in catalysts or in oxidizing agents, and can be carried out using water rather than an organic solvent. Thus the process can conform with the ideals of green chemistry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.