Arylphosphonodiamide compounds and herbicidal compositions thereof

US5186733A · kind A · utility

Assignee

• IMPERIAL CHEMICAL INDUSTRIES LIMITED · GB

Inventors

• Michael D. Broadhurst · Novato, US
• Tsze H. Tsang · Corona, US
• John Tomko · Dobbs Ferry, US

Key dates

• Filing date: Nov 12, 1991
• Grant date: Feb 16, 1993
• Expiry date: Nov 12, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/4419
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Herbicides have the formula ##STR1## in which R is hydrogen, mono- or poly-halo, mono- or di-(C.sub.1 -C.sub.4 alkyl), C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, phenoxy or nitro; PA1 R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl; PA1 R.sub.3 is C.sub.1 -C.sub.6 alkyl; PA1 R.sub.2 is C.sub.2 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl, optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, one or more halogens, or two C.sub.1 -C.sub.4 alkoxy groups, or one C.sub.1 -C.sub.4 alkyl and one C.sub.1 -C.sub.4 alkoxy group, phenyl-(C.sub.1 -C.sub.2)alkyl or pyridyl; or PA1 R.sub.1 and R.sub.2, and/or R.sub.3 and R.sub.4 respectively, taken together with the nitrogen atom, form a 4-8 member ring, optionally including an oxygen heteroatom; PA1 and R.sub.4 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl, optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, one or more halogens, or two C.sub.1 -C.sub.4 alkoxy groups, or one C.sub.1 -C.sub.4 alkyl and one C.sub.1 -C.sub.4 alkoxy group, phenyl-(C.sub.1 -C.sub.2 alkyl) or pyridyl; PA1 provided that if R.sub.…