Synthesis of intermediates useful in preparing tricyclic compounds
US6495689B2 · kind B2 · utility
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2References
5Claims
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Key dates
| Filing date | Jun 21, 2001 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D221/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for preparing a compound having the formula: wherein R, R1, R2, R3, and R4 are independently selected from the group consisting of H, Br, Cl, F, alkyl, or alkoxy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.