New benzyloxy-ethyl phenoxy-propionate derivs.

摘要

Phenoxyalkanoates of formula (I) are new. R1 and R2=H, halo, lower alkyl or NO2, or together complete a naphthalene ring; R3 and R4=H or Me; n=1 or 2; m=0 or 1; X=O, S, SO2, or NR6; R6= lower alkyl; R5=H or halo; Y=O or S.