Process for ortho-alkylation of phenol compounds
US3953529A · kind A · utility
22Cited by
2References
8Claims
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Key dates
| Filing date | Jun 4, 1974 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Jun 4, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for alkylating the ortho-position of a phenol compound which comprises bringing a phenol compound containing at least one hydrogen atom at its ortho-position and an alcohol into contact with a catalyst in the gaseous phase, said catalyst being selected from the group consisting of PA1 A. a mixture of iron oxide and silica in which the atomic ratio of Fe to Si is 100 : 0.03 - 200, and PA1 B. a mixture of iron oxide, silica and chromium oxide in which the atomic ratio of Fe to Si to Cr is 100 : 0.1 - 5 : 0.1 - 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.