Optically active phenoxypropionic acid derivatives

US4622415A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Heinz Forster · Wuppertal, DE
• Bernd Gallenkamp · Wuppertal, DE
• Uwe Priesnitz · Solingen, DE
• Hans-Jochem Riebel · Bad Camberg, DE
• Ludwig Eue
• Robert R. Schmidt · Cologne, DE

Key dates

• Filing date: Jul 31, 1985
• Grant date: Nov 11, 1986
• Expiry date: Jul 31, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/081
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

There is disclosed an R enantiomer of phenoxypropionic acid compound of the formula ##STR1## in which X represents hydrogen or halogen, and R represents hydroxyl, alkoxy, halogen or the radical of the formula ##STR2## wherein R.sup.1 and R.sup.2 independently of one another represent hydrogen or methyl, n represents 0, 1 or 2 and Y represents trimethylsilyl, or optionally substituted azolyl bonded via nitrogen, or represents alkoxy, alkoxycarbonyl or the radical of the formula ##STR3## wherein Q represents oxygen, sulphur, SO or SO.sub.2 and R.sup.3 and R.sup.4 independently of one another represent hydrogen, halogen, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, alkylthio having 1 to 4 carbon atoms, nitro, cyano or alkoxycarbonyl having 1 to 4 carbon atoms in the alkoxy group; compositions containing herbicidally effective amounts of such R enantiomers and the use of such R enantiomers as herbicides.