Herbicidally active .alpha.-(4-phenoxyphenoxy)propionic acid alkoxyalkyl amides, herbicidal compositions containing them and their use
US4243410A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N39/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to novel herbicidally active 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid alkoxyalkyl amides, processes for their manufacture and also herbicidal compositions which contain them. The preferred utility of the novel compounds is the selective control of monocotyledonous weeds. The novel compounds have the general formula I ##STR1## wherein "alkylene" represents a straight or branched saturated hydrocarbon chain of 1 to 4 carbon atoms and R represents an alkyl radical of 1 to 4 carbon atoms. The novel compounds are obtained by reacting a halide or lower alkyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid with an alkoxyalkyl amine EQU H.sub.2 N-alkylene-O-R or by reacting a hydroxydiphenyl ether ##STR2## wherein Y is hydrogen or a cation, with an .alpha.-halopropionic acid alkoxyalkyl amide of the formula ##STR3## in the presence of an acid acceptor. Preferred compounds of the formula I are an N-(2-methoxy)-ethylamide and N-(3-methoxy)-propyl-(2)-amide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.