The disclosure herein pertains to herbicidal methods and compositions containing 3,5-dicarboxylic acid esters of 2,6-bis-(fluoroalkyl) tetrahydropyrans and piperidines which may be substituted in the 4-position by certain alkyl, phenylalkyl, phenyl, alkoxyalkyl, alkythioalkyl, cycloalkyl, and heterocyclic radicals wherein the hetero atom is oxygen and sulfur and to a process for the preparation thereof. These compounds are useful as pre-emergent herbicides.
本文公开了含有 2,6-双(氟烷基)
四氢吡喃和
哌啶的
3,5-二羧酸酯的除草方法和组合物,其 4 位可被某些烷基、苯烷基、苯基、烷氧基烷基、烷
硫基、环烷基和杂环基取代,其中杂原子为氧和
硫。这些化合物可用作萌芽前
除草剂。