Furobenzopyran derivatives, process for preparation of same and herbicides containing same as active components
US5530146A · kind A · utility
3Cited by
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3Claims
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Key dates
| Filing date | Jun 22, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Jun 22, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H15/203
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Furobenzopyran derivatives of the general formula (I): ##STR1## in which R.sup.1 is a lower alkyl group, R.sup.2 is a lower alkyl group, lower alkoxy group, halogen atom or lower alkyl group substituted by a halogen atom, R.sup.3 is a lower alkyl group, lower alkoxy group, halogen atom, lower alkyl group substituted by a halogen atom, phenoxy group or benzyloxy group, R.sup.4 is a hydrogen atom or lower alkyl group and m and n are any integers between 0 and 4, have an excellent herbicidal activity on weeds and are completely selective to crops such as paddy rice, soybeans and cotton.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.