Abstract
The synthesis and herbicidal activity of ureas and amides with carvone residues were examined. (S)-(+)-(1) and (R)-(-)-Carvone(2) were converted to the respectively, primary amines(3) and (4) by oximation and reduction with LiAlH4. Primary amine derivatives were further converted into the urea and amide compounds (3a)∼(3e) and (4a)∼(4e). The herbicidal activity of products (3a)∼(3e) and (4a)∼(4e) towards weeds found in a paddy field and field was measured in the pot. Products (3a) showed a particularly strong inhibitory effect on the growth of Amaranthus retroflexus(AR) and Setaria viridis(SV).
