Abstract: 2-Substituted 7-aminoazolopyrimidines of the formula I in which the substituents are as defined below: R1 is hydrogen, halogen, cyano, alkyl, haloalkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkoxyalkyl, benzyloxyalkyl, alkoxyalkenyl or alkoxyalkynyl; R2 is hydrogen, halogen, cyano, alkyl, haloalkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkoxyalkyl and alkylthioalkyl, where the carbon chains in R1 and/or R2 may be substituted according to the description; R3 is halogen, cyano, NRARB, hydroxyl, mercapto, alkyl, haloalkyl, cycloalkyl, alkoxy, alkylthio, cycloalkoxy, cycloalkylthio, carboxyl, formyl, alkylcarbonyl, alkoxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl, phenyl, phenoxy, phenylthio, benzyloxy, benzylthio, alkyl-S(O)m—; A is N and CRx; Rx is hydrogen or one of the groups mentioned under R3; processes and intermediates for preparing these compounds, compositions comprising them and their use for controlling phytopathogenic harmful fungi.

Abstract: The invention relates to the use of triazolopyrimidines of the formula I In which: R1, R2 are hydrogen, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkenyl, alkadienyl, haloalkenyl, cycloalkenyl, halocycloalkenyl, alkynyl, haloalkynyl, C3-C6-cycloalkynyl, phenyl, naphthyl, or a five- to ten-membered saturated, partially unsaturated or aromatic heterocycle which contains one, two, three or four heteroatoms from the group consisting of O, N and S, where R1, R2 may be substituted as defined in the description or R1 and R2 together with the nitrogen atom to which they are attached may form five- to eight-membered heterocyclyl or heteroaryl which is attached via nitrogen and may contain one, two or three further heteroatoms from the group consisting of O, N and S as ring members and/or may be substituted as defined in the description; L independently of one another are halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkenyloxy, cyano, C(?O)A1, S(?O)mA2, NRcRd or NRc—(C?O)—Rd, where A1, A2, Rc, Rd and m ar