Hydroxamic-acid derivatives, method of preparing them and their use as fungicides

摘要

PCT No. PCT/EP95/00149 Sec. 371 Date Jul. 22, 1996 Sec. 102(e) Date Jul. 22, 1996 PCT Filed Jan. 16, 1995 PCT Pub. No. WO95/20570 PCT Pub. Date Aug. 3, 1995Hydroxamic derivatives of the formula (I): in which A represents hydrogen or a grouping which can be readily eliminated; A1 represents hydrogen or alkyl; Ar represents optionally substituted arylene or heteroarylene; E represents a 1-alkene-1,1-diyl grouping which contains a radical R1 in the 2-position, or represents a 2-aza-1-alkene-1,1-diyl grouping which contains a radical R2 in the 2-position, or represents an optionally substituted imino grouping ("azamethylone", N-R3); G represents a bridge member as defined herein; and Z represents in each case optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aryl or heterocyclyl; are useful as fungicides. Also disclosed is a process for preparing the compounds of formula (I).