Process for the selective ortho-alkylation of phenolic compounds
US4208537A · kind A · utility
14Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Nov 27, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The selective alkylation of a phenolic compound having a hydrogen atom in at least one of the ortho positions is achieved by reacting the phenolic compound with an alcohol in the vapor phase in the presence of a catalyst containing mixed oxides of chromium and tin. The catalyst can additionally contain iron oxide, sulfate radical, or a combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.