Preparation of 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofuran
US4297284A · kind A · utility
5Cited by
2References
14Claims
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Inventor
Key dates
| Filing date | Jul 22, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Jul 22, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2,3-Dihydro-2,2-dimethyl-7-hydroxybenzofuran is prepared by heating isobutenylpyrocatechol or isobutenylpyrocatechol/methallylpyrocatechol admixtures, at cyclization/isomerization temperatures, in the presence of a catalytic amount of an organic sulfonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.