Process for preparing dihalogenated adamantanes
US6878853B2 · kind B2 · utility
27Cited by
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5Claims
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Assignee
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Key dates
| Filing date | Nov 11, 2002 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Nov 11, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention discloses a process for preparing a dihalogenated adamantane by reacting an adamantane optionally substituted with alkyl at 1-position with a halosulfonic acid, comprising the first stage of monohalogenation conducted at −5 to 15° C. and then the second stage of dihalogenation conducted at 17 to 35° C., preferably in the absence of an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.