Fluorine-containing pyrazolecarbonitrile derivative and method for producing the same, and fluorine-containing pyrazolecarboxylic acid derivative obtained by using the fluorine-containing pyrazolecarbonitrile derivative and method for producing the same
US7884216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2008 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Feb 13, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a fluorine-containing pyrazolecarbonitrile derivative and a method for producing the same, and a fluorine-containing pyrazolecarboxylic acid derivative obtained by using the fluorine-containing pyrazolecarbonitrile derivative and a method for producing the same.A fluorine-containing acyacrylonitrile derivative prepared from a fluoroacyl derivative and an aminoacrylonitrile derivative, is reacted with a hydrazine derivative to produce a fluorine-containing pyrazolecarbonitrile derivative represented by Formula (1).In Formula (1), Rf represents an alkyl group having 1 to 6 carbon atoms and substituted with at least one fluorine atom; R1 represents an alkyl group having 1 to 6 carbon atoms and R2 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or the like.The fluorine-containing pyrazolecarbonitrile derivative represented by Formula (1) is reacted with water to produce a fluorine-containing pyrazolecarboxylic acid derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.