A PREPARATION PROCESS FOR SULFONYL UREA

摘要

A sulfonyl urea of formula (I) is prepd. by reacting a cpd. of formula (II) with a cpd. of formula (III) in an inert solvent i.e. CH2Cl2, THF, dioxane and toluene. In (III), R=Me, Et or (un)substed. phenyl. (I) is useful as a herbicide.