Preparation of ortho-alkylated phenols
US4447657A · kind A · utility
41Cited by
3References
13Claims
0Family size
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Key dates
| Filing date | Nov 10, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Nov 10, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkyl phenyl ethers may be induced to undergo thermal rearrangement on an alumina catalyst to afford the isomeric ortho-alkylphenol. Such rearrangement generally occurs under milder conditions than does the alkylation of a phenol with an olefin using the same alumina as an alkylating catalyst. Yields frequently are high with good selectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.