Method of preparing hydrocarbyl-substituted cresols
US4110543A · kind A · utility
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3Claims
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Key dates
| Filing date | Feb 24, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Feb 24, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of preparing hydrocarbyl-substituted cresols is disclosed. The method comprises heating a mixture of mono- or di-hydrocarbyl-substituted cresols and an alcohol, which is benzyl alcohol or a C.sub.1 -C.sub.10 aliphatic alcohol, at an elevated temperature in the presence of a catalytic amount of alumina. The product contains at least one hydrocarbyl substituent corresponding to the hydrocarbon moiety of the alcohol used in the process. A typical process employs 4,6-di-t-butyl-m-cresol and isopropanol to prepare a product mixture containing a substantial amount of thymol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.