Substituted fused pyrimidinones and dihydropyrimidinones

A method for increasing tolerance to abiotic stress in plants, comprising:

• applying, to the plants, the seed thereof, or to the area on which the plants grow, or to genetically modified cultivars, the seed thereof, or to cultivated areas on which these cultivars grow, an effective, non-toxic amount of at least one substituted fused dihydropyrimidinone of the formula (I) or a salt thereof:
• where:
• Q represents the moiety:
• where R6, R7, and R8 are each as defined below;
• and
• where the arrow represents a bond to the N—R5 group;
• W is oxygen or sulfur;
• A is N (nitrogen) or a C—R4 moiety;
• where R4 in the C—R4 moiety is in each case as defined below;
• R1, R2, and R3 are each independently hydrogen or fluorine;
• R4 is nitro, amino, hydroxyl, fluorine, chlorine, bromine, iodine, cyano, hydrothio, (C1-C4)-alkyl, (C3-C6)-cycloalkyl, (C2-C6)-alkenyl, (C2-C6)-alkynyl, aryl, aryl-(C1-C4)-alkyl, aryl-(C2-C6)-alkenyl, aryl-(C2-C6)-alkynyl, heteroaryl, (C3-C6)-cycloalkyl-(C1-C4)-alkyl, heteroaryl-(C2-C6)-alkenyl, heteroaryl-(C2-C6)-alkynyl, (C1-C4)-haloalkyl, (C3-C6)-halocycloalkyl, (C2-C6)-haloalkenyl, (C2-C6)-haloalkylalkynyl, (C1-C4)-trialkylsilyl-(C2-C6)-alkynyl, (C1-C4)-alkoxy-(C1-C4)-alkyl, (C1-C4)-alkoxy (C1-C4)-haloalkoxy, (C2-C6)-alkenyloxy-(C1-C4)-alkyl, aryl-(C1-C4)-alkoxy, (C1-C6)-alkylamino, (C2-C6)-alkenylamino, (C2-C6)-alkynylamino, (C1-C4)-alkylthio, (C1-C4)-haloalkylthio, bis-(C1-C6)-alkylamino, (C3-C6)-cycloalkylamino, (C3-C6)-haloalkylamino, (C1-C6)-alkylcarbonylamino, (C3-C6)-cycloalkylcarbonylamino, (C1-C4)-haloalkylcarbonylamino, (C1-C4)-alkoxycarbonylamino, (C1-C4)-alkylaminocarbonylamino, (C1-C4)-alkylsulfonylamino, (C3-C6)-cycloalkylsulfonylamino, arylsulfonylamino, hetarylsulfonylamino, (C3-C6)-haloalkylsulfonylamino, (C1-C4)-alkylsulfonyl, (C1-C6)-haloalkylsulfonyl, arylsulfonyl, (C1-C4)alkylsulfinyl, (C1-C4)-haloalkylsulfinyl, arylsulfinyl, (C3-C6)-cycloalkyl-(C1-C4)-alkoxy, (C1-C6)-alkynyl-(C1-C4)-alkoxy, (C2-C6)-alkenyl-(C1-C4)-alkoxy, (C2-C6)-alkenyloxy-(C1-C4)-alkoxy, (C1-C4)-alkyloxy-(C1-C4)-alkoxy, (C1-C4)-alkylamino-(C1-C4)-alkoxy, bis-(C1-C6)-alkylamino-(C1-C4)-alkoxy, or (C3-C6)-cycloalkylamino-(C1-C4)-alkoxy;
• R5 is hydrogen (C1-C6)-alkyl, (C2-C6)-alkenyl, (C3-C6)-alkynyl, (C3-C6)-cycloalkyl, (C1-C6)-alkylthio-(C1-C6)-alkyl, (C1-C6)-alkoxy-(C1-C6)-alkyl, (C1-C4)-haloalkyl, (C1-C6)-cycloalkyl-(C1-C4)-alkyl, (C1-C6)-alkoxycarbonyl, (C1-C6)-alkylcarbonyl, (C3-C6)-cycloalkylcarbonyl, (C1-C6)-alkylaminocarbonyl, (C3-C6)-cycloalkylaminocarbonyl, (C1-C4)-haloalkylaminocarbonyl, (C2-C6)-alkynylaminocarbonyl, cyano-(C1-C6)-alkylaminocarbonyl, (C1-C7)-heterocycloalkylcarbonyl, heteroaryl-(C1-C7)-alkylaminocarbonyl, (C2-C6)-alkenyloxycarbonyl, (C3-C7)-cycloalkyl-(C1-C4)-alkoxycarbonyl, (C3-C7)-cycloalkyl-(C1-C4)-alkylaminocarbonyl, aryl-(C1-C4)-alkylaminocarbonyl, cyano-(C1-C6)-alkyl, nitro-(C1-C6)-alkyl, (C1-C7)-alkylamino-(C1-C7)-alkyl, bis-(C1-C7)-alkylamino-(C1-C7)-alkyl, aminocarbonyl-(C1-C7)-alkyl, (C1-C7)-alkylaminocarbonyl-(C1-C7)-alkyl, bis-(C1-C7)-alkylaminocarbonyl-(C1-C7)-alkyl, or (C1-C7)-alkoxycarbonyl-(C1-C7)-alkyl;
• R6 is hydrogen, formyl, hydroxyl, amino, (C1-C6)-alkyl, (C2-C6)-alkenyl, (C2-C6)-alkynyl, (C3-C6)-cycloalkyl, (C1-C6)-alkylthio-(C1-C6)-alkyl, (C1-C6)-alkoxy-(C1-C6)-alkyl, (C1-C4)-haloalkyl, aryl-(C1-C4)-alkyl, aryl-(C2-C6)-alkenyl, (C3-C6)-cycloalkyl-(C1-C4)-alkyl, (C1-C6)-alkoxycarbonyl, (C1-C6)-alkylcarbonyl, (C3-C6)-cycloalkylcarbonyl, (C1-C6)-alkylaminocarbonyl, (C3-C6)-cycloalkylaminocarbonyl, (C1-C4)-haloalkylaminocarbonyl, (C2-C6)-alkynylaminocarbonyl, cyano-(C1-C6)-alkylaminocarbonyl, (C4-C7)-heterocycloalkylcarbonyl, heteroaryl-(C1-C7)-alkylaminocarbonyl, (C2-C6)-alkenyloxycarbonyl, (C3-C7)-cycloalkyl-(C1-C4)-alkoxycarbonyl, (C3-C7)-cycloalkyl-(C1-C4)-alkylaminocarbonyl, aryl-(C1-C4)-alkylaminocarbonyl, cyano-(C1-C6)-alkyl nitro-(C1-C6)-alkyl, heteroaryl-(C1-C4)-alkyl, (C1-C7)-alkylamino-(C1-C7)-alkyl, bis-(C1-C7)-alkylamino-(C1-C7)-alkyl, aminocarbonyl-(C1-C7)-alkyl, (C1-C7)-alkylaminocarbonyl-(C1-C7)-alkyl, bis-(C1-C7)-alkylaminocarbonyl-(C1-C7)-alkyl, or (C1-C7)-alkoxycarbonyl-(C1-C7)-alkyl;
• R7 is aryl-(C2-C4)-alkenyl, aryl-(C2-C4)-haloalkenyl, heteroaryl-(C2-C4)-alkenyl, heteroaryl-(C2-C4)-haloalkenyl, (C3-C7)-heterocycloalkyl-(C2-C4)-alkynyl, (C3-C7)-heterocycloalkenyl-(C2-C4)-alkynyl, (C3-C7)-heterocycloalkyl-(C2-C4)-alkenyl, (C3-C7)-heterocycloalkenyl-(C2-C4)-alkenyl, (C3-C7)-heterocycloalkyl-(C1-C4)-alkyl, or (C3-C7)-heterocycloalkenyl-(C1-C4)-alkyl, where the heteroatom in the heteroaryl, heterocycloalkyl, and heterocycloalkenyl optionally bears a charge;
• and
• R8 is hydrogen.