Herbicidal 4-chloro-aryloxy-acetyl- and 4-chloro-aryloxy-propionyl-malonates
US4708733A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 23, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Sep 23, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N43/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to new 4-chloro-aryloxy-acetyl- or 4-chloro-aryloxy-propionyl-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 chlorine or methyl; PA0 R.sup.2 represents hydrogen or chlorine; PA0 R.sup.3 stands for hydrogen or methyl; PA0 R.sup.4 represents C.sub.1-4 alkyl and the two R.sup.4 groups may be identical or different; and PA0 X is --N.dbd. or --CH.dbd.. 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 an metal compound with a malonate of the general Formula III; or by reacting a compound of the general Formula IV ##STR4## with a compound of the general Formula V ##STR5## (in which Formulae R.sup.1, R.sup.2, R.sup.3, R.sup.4 and X are as stated above; Z stands for halogen and Y represents halogen, cyano or alkylcarbonyloxy). The new compounds of the general Formula I possess valuable herbicidal properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.