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NYA DIHYDROPYRONER, MEDEL Vilka INNEHAOLLER DE NYA DIHYDROPYRONENRNA SOM AKTIVAEMNEN OCH deras ANVAENDNING Foer BEKAEMPNING AV OGRAES.
NYA DIHYDROPYRONER, MEDEL Vilka INNEHAOLLER DE NYA DIHYDROPYRONENRNA SOM AKTIVAEMNEN OCH deras ANVAENDNING Foer BEKAEMPNING AV OGRAES.
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机译：新的双氢吡喃酮，将新的双氢吡喃酮包含为活性物质的措施，以及它们用于控制有机物的措施。
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摘要
There are described novel dihydropyrones of the formula I IMAGE (I) wherein R1 and R2 independently of one another are each a C1-C4-alkyl group, or one of the two substituents is also hydrogen, or R1 and R2 jointly form a C2-C6-alkylene bridge, R3 is C1-C4-alkoxy, C2-C6-alkenyloxy, C2-C4-alkynyloxy, C1-C4-haloalkoxy, C3-C5-alkoxyalkoxy or hydroxyl, and X, Y and Z independently of one another are each hydrogen, halogen, C1-C4-alkyl, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-haloalkyl, C1-C4-haloalkoxy, -S(O)n-C1-C4-alkyl, -S(O)n-C1-C4-haloalkyl, where n is 0, 1 or 2, or they are each C(O)OR4, where R4 is hydrogen or C1-C4-alkyl, or they are each NO2, CN or NR5R6, where R5 and R6 independently of one another are each hydrogen, C1-C4-alkyl, C1-C4-alkylcarbonyl, C 1-C4-haloalkylcarbonyl or C1-C4-haloalkylsulfonyl, processes for producing them, novel starting products used therein, and the use of the novel dihydropyrones. The active substances of the formula I can be used in the form of agriculturally applicable compositions for combating weeds.
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