HERBICIDES CONTAINING AS ACTIVE SUBSTANCE 4-CHLOR-ARYLOXIACETIL OR 4-CHLOR-ARYLOXI-PROPIONIL-MALONIC-ACID-ESTHER DERIVATIVES AND PROCESS FOR PRODUCTION OF ACTIVE SUBSTANCE

摘要

Aryloxyacylmalonates of formula (I) are new: R1 = Cl or Me; R2 = H or Cl; R3 = H or Me; R4 = 1-4C alkyl (same or different); X = N or CH.