Propargylether derivatives, a process for their preparation and their use for controlling phytopathogenic microorganisms

Abstract

The invention relates to 4-propargyloxy-benzyl dervatives of the general formula (I) including the optical isomers thereof and mixtures of such isomers, wherein Ris hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl; R, R, R, R, and Rare each independently of each other hydrogen or optionally substituted alkyl; Ris optionally substituted alkyl; X is O or N—R; and Ris a group Ris optionally substituted aryl or optionally substituted heteroaryl; Rand Rare each independently hydrogen, optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl; Ris optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted heteroaryl; Ris hydrogen or optionally substituted alkyl, alkenyl or alkynyl; and Ris optionally substituted alkyl or optionally substituted amino. These compounds possess useful plant protecting properties and may advantageously be employed in agricultural practice for controlling or preventing the infestation of plants by phytopathogenic microorganisms, especially fungi