1-ARYL-2-NAPHTHOYLAMINES

摘要

1-Aryl-2-naphthoylamines of formula I are described (I) wherein R1 is halogen, nitro, cyano, C1-C6alkyl that is unsubstituted or mono- or poly-substituted by halogen and/or C1-C3alkoxy, or is C3-C6cycloalkyl, OR4, NR5R6, CO2R5, CONR5R6 or NHCOR7, or wherein two adjacent positions in the nucleus are bridged by a methylenedioxy or ethylenedioxy group that is unsubstituted or mono- or poly-substituted by fluorine, wherein further R4 is hydrogen or C1-C6alkyl that is unsubstituted or substituted by C1-C3alkoxy or mono- or poly-substituted by halogen, or is C3-C4alkenyl, 2-propynyl, 3-halo-2-propynyl, or COR7, each of R5 and R6, independently of the other, is H or C1-C4alkyl, R7 is C1-C4alkyl and Z is O or NH, a and b denote the number of occupied positions in the respective 6-membered ring, and a is a number from 1 to 3 and b is a number from 0 to 3, the individual groups R1 being identical or different when the sum of a and b is greater than 1, X is O, S or NH, each of R2 and R3, independently of the other, is C1-C6alkyl that is unsubstituted or substituted by C1-C4alkoxy, halogen or by cyano, or is C3-C7cycloalkyl, C3-C7alkenyl or the radical wherein n is 0 or 1, or R2 and R3 are also together a C4-C7alkylene chain that together with the nitrogen atom may form a heterocycle that is unsubstituted or mono- or di-substituted by C1-C4alkyl, it being possible for one of the methylene groups in this chain to be replaced by O, S or NR7, and for R2 also to be hydrogen. The compounds of formula I have microbicidal activity and can be used advantageously for plant protection.