Process for the preparation of pyrazoles
US7678924B2 · kind B2 · utility
3Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jun 17, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of compounds of formula Iwherein R1 is C1-C4haloalkyl; R2 is C1-C6alkyl and R3 is methyl or ethyl,by reaction of compounds of formula IIwherein the substituents are as defined for formula I, with compounds of formula IIIwherein R3 is as defined for formula I and n is 0 or 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.