Patent · US Active

Process for preparing pyridyl-substituted pyrazoles

US8987460B2 · kind B2 · utility

1Cited by

3References

2Claims

0Family size

Assignee

BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

Sergii Pazenok · Solingen, DE
Norbert Lui · Odenthal, DE
Harry Blaschke · Wuppertal, DE

Key dates

Filing date	Jan 11, 2013
Grant date	Mar 24, 2015
Priority date	—
Expiry date	Jan 11, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/55
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing 1-pyridyl-substituted pyrazoles, comprising the reaction of acetyleneketones with pyridylhydrazine derivatives to give 1-pyridyl-substituted dihydro-1H-pyrazoles, the further reaction thereof with elimination of water to give 1-pyridyl-substituted trihalomethylpyrazoles, and the further processing thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.