4-cyano(nitro)-5-oxy(thio)-pyrazole derivatives, composition containing them, and herbicidal and plant growth regulating methods of using them

US4770692A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jorg Stetter · Wuppertal, DE
• Reinhold Gehring · Wuppertal, DE
• Otto Schallner · Monheim, DE
• Hans-Joachim Santel · Leverkusen, DE
• Robert R. Schmidt · Cologne, DE
• Klaus Lurssen · Wittlich, DE

Key dates

• Filing date: Jul 14, 1987
• Grant date: Sep 13, 1988
• Expiry date: Jul 14, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D231/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel herbicidal and plant-growth regulating pyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or halogenoalkyl, PA1 R.sup.2 represents nitro or cyano, PA1 R.sup.3 represents optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkinyl, optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted aralkyl or optionally substituted aryl, PA1 Ar represents phenyl which is substituted twice or more, or optionally substituted pyridyl, and PA1 Y represents O, S, SO or SO.sub.2. Several intermediates therefor are also new.