Herbicidal aryloxy phenoxy acyl malonates
US4765825A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 23, 1986 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Sep 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/738
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to new aryloxy phenoxy acyl malonates of the general Formula I ##STR1## a process for the preparation thereof and herbicidal compositions comprising the same. In the general Formula I PA0 R.sup.1 stands for hydrogen, halogen, trifluoromethyl, trifluoromethoxy or cyano; PA0 R.sup.2 represents hydrogen, halogen or methyl; PA0 R.sup.3 is C.sub.1-4 alkyl; and the R.sup.3 substituents may be the same or different, PA0 X stands for --N.dbd. or --CH.dbd. and PA0 n is 0 or 1. The compounds of the general Formula I may be prepared by reacting a compound of the general Formula II ##STR2## with a metal derivative of a malonate of the general Formula III ##STR3## or in the presence of a metal compound with a malonate of the general Formula III; or reacting a compound of the general Formula IV ##STR4## with a compound of the general Formula V; ##STR5## or reacting a compound of the general Formula VI ##STR6## with a compound of the general Formula VII ##STR7## (in which Formulae R.sup.1, R.sup.2, R.sup.3, X and n are as stated above; Y stands for halogen, cyano or alkylcarbonyloxy; Z represents halogen; and if Q is hydroxy or alkali metal oxy, P stands for halogen, or if Q…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.