1,3,4-Thiadiazolyloxyphenylureas

US4364769A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Georg Pissiotas · Lörrach, DE
• Otto Rohr · Therwil, CH
• Haukur Kristinsson · Bottmingen, CH

Key dates

• Filing date: Jul 7, 1980
• Grant date: Dec 21, 1982
• Expiry date: Jul 7, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D285/125
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to novel 1,3,4-thiadiazolyloxyphenylureas which possess herbicidal properties and which have good selectivity in different crops of cultivated plants. The novel phenylureas have the general formula I ##STR1## wherein X is hydrogen, halogen or trifluoromethyl, PA1 Y is hydrogen, C.sub.1 -C.sub.6 alkyl which can be interrupted by oxygen or substituted by halogen or cyano; C.sub.3 -C.sub.6 cycloalkyl, cyclopropylmethyl, phenyl which is unsubstituted or substituted by chlorine or C.sub.1 -C.sub.4 alkyl; or is C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylsulfinyl or C.sub.1 -C.sub.4 alkylsulfonyl, or a sulfamoyl group --SO.sub.2 NR.sub.2 R.sub.3, PA1 R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, PA1 R.sub.2 is hydrogen, C.sub.1 -C.sub.6 alkyl which can be interrupted by oxygen or substituted by halogen or cyano, or is C.sub.3 -C.sub.6 alkenyl or C.sub.3 -C.sub.6 alkynyl, or C.sub.3 -C.sub.6 cycloalkyl, has the same meaning as R.sub.2 or is C.sub.1 -C.sub.6 alkoxy, or PA1 R.sub.2 and R.sub.3, together with the nitrogen atom to which they are attached, can also form a 5- or 6-membered heterocyclic ring system which can contain an additi…