Herbicidal activity of alkyl phosphinates
AssigneeBASF SE
InventorsKlaus Ditrich, Michael Breuer, Moritz Stefan Pott, Gunther Zimmermann
Life of this patent
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Abstract
The present invention relates to compounds of formula (I) and compositions comprising the same. The invention also relates to the use of compounds of formula (I), or of compositions comprising the same, or of compounds of formula (II), for controlling unwanted vegetation. Further, the invention relates to methods of applying compounds of formula (I), or compositions comprising the same, or compounds of formula (II) on plants, their seed and/or their habitat. Finally, the invention relates to a method of manufacturing a compound of formula (III) via a compound of formula (I).
Claims15
A compound of formula (I)
- wherein
- R1 is hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, or (C2-C8)-alkynyl;
- including its agriculturally acceptable salts, amides, esters or thioesters.
Use of a compound of formula (II)
- wherein
- R1 is hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, or (C2-C8)-alkynyl;
- R2 is hydrogen, (C1-C3)-alkyl, or (C1-C3)-haloalkyl;
- and
- R3 is hydrogen, (C1-C3)-alkyl, or (C1-C3)-haloalkyl;
- including its agriculturally acceptable salts, for controlling unwanted vegetation.
A method for controlling unwanted vegetation which comprises allowing a herbicidally effective amount of at least one compound of formula (II)
- wherein
- R1 is hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, or (C2-C8)-alkynyl;
- R2 is hydrogen, (C1-C3)-alkyl, or (C1-C3)-haloalkyl;
- and
- R3 is hydrogen, (C1-C3)-alkyl, or (C1-C3)-haloalkyl;
- including its agriculturally acceptable salts, to act on plants, their seed and/or their habitat.
A method of manufacturing glufosinate, its alkyl ester or the salts thereof having the formula (III)
- wherein R is hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, or (C2-C8)-alkynyl, comprising the step of chemically cleaving off the carbamoyl moiety of a compound of formula (I)
- wherein R is hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, or (C2-C8)-alkynyl.
Dependencies are inferred from the claim text.