Process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates and 3-fluoroalkyl-5-pyrazolecarboxylic acids
US10556867B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Sep 18, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Sep 18, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a novel process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates from ketimines and oxalic acid derivatives which can be further transformed into 3-fluoroalkyl-5-pyrazolecarboxylic acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.