Method for preparing 4-(3-pyridinyl)-1h-imidazole and the intermediates used
US6353108B1 · kind B1 · utility
6Cited by
1References
10Claims
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Key dates
| Filing date | Jan 26, 2001 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/51
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a method for preparing compounds of formula (I) wherein R represents a hydrogen atom or an allyl radical containing up to 8 carbon atoms, characterised in that it consists in subjecting a compound of formula (II) wherein alc represents the residue of an alkyl radical containing up to 4 carbon atoms to the action of a compound of formula (III): RCONH2, wherein R retains its previous meaning, to obtain the compound of formula (IV) wherein R retains its previous meaning which is subjected to cyclization to obtain the desired product of formula (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.