The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2019
Filed:
Mar. 05, 2019
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Birgit Gockel, Ludwigshafen, DE;
Daniel Saelinger, Ludwigshafen, DE;
Sebastian Soergel, Ludwigshafen, DE;
Michael Rack, Eppelheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 231/14 (2006.01); C07D 401/12 (2006.01); C07D 405/06 (2006.01); C07D 403/12 (2006.01);
U.S. Cl.
CPC ...
C07D 231/14 (2013.01); C07D 401/12 (2013.01); C07D 403/12 (2013.01); C07D 405/06 (2013.01);
Abstract
The present invention relates to a process for preparing a pyrazole compound of formula V, which comprises cyclizing a hydrazone substituted α,β-unsaturated carbonyl compound of formula IV by reacting it with a suitable reagent, e.g. a reducing agent, an organometallic reagent or a nucleophilic reagent. The compounds of formula V are versatile reaction tools for the preparation of pyrazole derived fine chemicals. The present invention also relates to pyrazole compounds of formulae Va, Vb, Vc, and VI.