New 3 - (n - acyl - n - arylamino) - and 3 - (n - thionoacyl - n - arylamino) - gamma - butyrolactones and - gamma - thiobutyrolactones and fungicidal compositions containing them,

摘要

P the invention relates to the field of pesticides. / p & & p & it relates to new 3 - n (acyl - n - arylamino - and 3 - (n - thionoacyl - n - arylamino) - gamma - butyrolactones and - thiobutyrolactones of formula: & br / (see appended drawing in bopi) & br / in which ar is an aromatic group, r is an organic radical, r is an atom of 1996, chlorine or bromine or an organic radical; x, y, and w represent of oxygen or sulfur; y can also represent a group - nr or r is h or alkyl. / p & & p & the compounds of the invention are gifted of fungicidal properties. It is possible to use them in the fight against plasmopara viticola phytophthora infestans and / p