| 摘要 |
<p>Diurethanes of the general formula <IMAGE> I wherein R1 is allyl or a C1 to C4 alkyl radical possibly substituted by halogen; R2 is a C1 to C4 alkyl radical possibly substituted by halogen, a C3 to C4 alkenyl or alkinyl radical, cyclohexyl, phenyl, C1 to C3 alkylphenyl, C1 to C3 alkoxyphenyl, halogen phenyl, benzyl or phenylethyl; R3 is a C3 or C4 hydrocarbon radical possibly substituted by halogen, or halogen ethyl; or R1 is ethyl or allyl, R2 is phenyl, C1 to C3 alkylphenyl, C1 to C3 alkoxyphenyl or halogen phenyl, and R3 is methyl or ethyl; are provided as herbicidal agents notably in cotton cultivation in the pre-emergent and emergent stages of development of such cotton; including other cultivations such as for cereal, corn and soybean.</p> |
