Preparation of optically active trans-hexahydrodibenzopyranones
US4075230A · kind A · utility
4Cited by
2References
9Claims
0Family size
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Key dates
| Filing date | Nov 10, 1976 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Nov 10, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/80
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Reaction of a 5-substituted resorcinol with optically active apoverbenone in the presence of aluminum chloride affords an optically active trans-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro-9H-di benzo[b,d]pyran-9-one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.