Preparation of 2,4-Di-t-alkylphenol
US4275249A · kind A · utility
2Cited by
4References
1Claims
0Family size
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Key dates
| Filing date | Nov 30, 1979 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Nov 30, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for introducing a plurality of alkyl groups into the aromatic ring of a hydroxy-substituted aromatic compound comprises contacting said aromatic compound with an olefin in the presence of alumina or halided alumina as catalyst and recovering the product. When said aromatic compound is phenol, said olefin is isobutylene, and said catalyst is fluorided or chlorided alumina, 2,4-di-t-butylphenol is formed with superior selectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.