1,2,4-Oxadiazole derivatives and herbicide composition containing same

US4243409A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Erich Schmidt · Lexington, US
• Friedrich Arndt · Berlin, DE

Key dates

• Filing date: Jan 4, 1979
• Grant date: Jan 6, 1981
• Expiry date: Jan 4, 1999

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N47/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A 1,2,4-oxadiazole derivative of the formula ##STR1## in which R.sub.1 and R.sub.2 are the same or different and are C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, halogeno-C.sub.1 -C.sub.3 -alkyl, phenyl, or phenyl substituted in one or several places by C.sub.1 -C.sub.4 alkyl, and/or C.sub.1 -C.sub.4 -alkoxy and/or trihalogenomethyl and/or halogen and/or cyano or are phenyl-C.sub.1 -C.sub.3 -alkyl, provided that at least one of R.sub.1 or R.sub.2 is constituted by the group ##STR2## in which R.sub.3 is C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, halogeno-C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.4 -alkamino or di-C.sub.1 -C.sub.4 -alkamino. The compounds of the invention have a high activity against both mono- and di-cotyl weeds together with a high selectivity for agricultural plants such as rice, winter cereals, maize, cotton, sunflower, peanuts, soybeans, peas, alfalfa, clover and other leguminous plants. They may be applied in preemergence or postemergence application.