abstract |
wherein R, R1 and R2 individually are hydrogen, alkyl, cycloalkyl, bicycloalkyl, alkoxy or aryl, and R3 is alkyl, cycloalkyl, bicycloalkyl or aryl. The oxythio-substituted ureas are prepared by reacting an N-chlorothio urea and a hydroxylic compound. Herbicidal oxythio-substituted ureas of the formula: |