Diphenyl ethers, their preparation and their use as herbicides

US4426220A · kind A · utility

Assignee

• BASF SE

Inventors

• Adolf Parg · Bad Dürkheim, DE
• Gerhard Hamprecht · Weinheim, DE
• Bruno Wuerzer · Otterstadt, DE

Key dates

• Filing date: Nov 25, 1981
• Grant date: Jan 17, 1984
• Expiry date: Nov 25, 2001

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N41/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Diphenyl ethers of the formula ##STR1## where Z.sup.1, Z.sup.2 and Z.sup.3 independently of one another are each hyrogen, halogen, nitro, cyano, carboxyl, alkyl of 1 to 4 carbon atoms, or haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl or haloalkylsulfonyl where alkyl is in each case of 1 to 4 carbon atoms, Y is hydrogen, halogen, cyano or nitro and Q is --CO--NA--OR.sup.1, where A is hydrogen, alkyl of 1 to 4 carbon atoms, a metal ion or an unsubstituted or substituted ammonium ion and R.sup.1 is carboxyalkyl, alkoxycarbonylalkyl or carbamylalkyl of not more than 10 carbon atoms, herbicides which contain these diphenyl ethers as active ingredients, and methods of controlling undesirable plant growth using these active ingredients.