| 摘要 |
<p>Herbicides of formula ROCHR-CO-NR"-CN (I) (where R is halogenated aryl, R' is H or lower alkyl and R" is H, 1-4C alkyl, phenyl, benzyl, an alkali metal or a group (II) metal), some of which also have insecticidal activity, are claimed. (I; (R"= H) may be prepd. by reacting H2NCN or a salt thereof with RO.CHR'.CO halogen (II) and (I; R" is not = H) can be prepd. by reacting a metal salt of R"-NH-CN (R" is not = H) with (II); (I; R" = H) may be alkylated to give (I; R" = alkyl).</p> |
