SYNTHESIS OF 6-SUBSTITUTED 3,5-DIARYL-1,2,4-TRIAZINES AS POTENTIAL HERBICIDAL AGENTS

A variety of 6-substituted 3,5-diaryl-1,2,4-triazines were synthesized . These diaryltriazines, which incorporate a triazine nucleus substitu ted by two aryl moieties, comprise a new class of bleaching herbicides . The structure-activity relationships were proved by introducing a va riety of substituents into the triazine and/or two aryl groups. The re sults indicated very specific structure requirements for herbicidal ac tivity. Highest activity was seen with compounds that contain three su bstituents: a chlorine group at a meta position of an aryl moiety at t he triazine 5-position, a fluorine group at the meta or para position of the other aryl moiety at the 3-position, and an ethylamino group at the 6-position of the triazine nucleus.