2,3-Dihydro-4-pyrone derivatives, their preparation the herbicidal compositions in which they are present and their use for selectively destroying weeds in crops
US4383849A · kind A · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1981 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Oct 28, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N43/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to new 2,3-dihydro-4-pyrone derivatives. These compounds correspond to the formula: ##STR1## in which R.sub.2 represents an alkyl radical (C.sub.2 -C.sub.3) and R.sub.3 represents and alkyl radical (C.sub.1 -C.sub.4), an alkenyl radical (C.sub.3 -C.sub.5) or an alkynyl radical (C.sub.3 -C.sub.5). They can be used for destroying weeds in crops, in particular sunflower and cotton crops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.