[EN] AZOLECARBOXAMIDE HERBICIDES<br/>[FR] HERBICIDES A BASE D'AZOLECARBOXAMIDE
申请人:DU PONT
公开号:WO2004035545A3
公开(公告)日:2004-08-05
[EN] NOVEL INTERMEDIATES AND PROCESS TO PYRIMIDINEDIONE HERBICIDES<br/>[FR] NOUVEAUX INTERMEDIAIRES ET NOUVEAU PROCEDE RELATIFS AUX HERBICIDES A BASE DE PYRIMIDINEDIONE
申请人:FMC CORP
公开号:WO2002056681A2
公开(公告)日:2002-07-25
A class of novel intermediates is described that have utility in processes for preparing uracil herbicides; wherein the novel intermediates are compounds of formula (A) which are cyclized with at least one cyclizing agent of formula (B) to provide a penultimate intermediate to, or a uracil herbicide, both of formula (I) where (X)n, Y, Z, R, R?1, R5, R7, and R8¿ are fully described herein. Preferred are those where Y and Z taken together are -N=C(R2)-NR3-, (X)¿n? is 4-fluoro-6-chloro; R is hydrogen and methyl; R?1 and R2¿ are trifluoromethyl, and R3 is hydrogen.