Diurethanes with selective herbicidal action

Abstract

Diurethanes of the general formula ##STR1## wherein R.sub.1 is allyl or a C.sub.1 to C.sub.4 alkyl radical possibly substituted by halogen; R.sub.2 is a C.sub.1 to C.sub.4 alkyl radical possibly substituted by halogen, a C.sub.3 to C.sub.4 alkenyl or alkinyl radical, cyclohexyl, phenyl, C.sub.1 to C.sub.3 alkylphenyl, C.sub.1 to C.sub.3 alkoxyphenyl, halogen phenyl, benzyl or phenylethyl; R.sub.3 is a C.sub.3 or C.sub.4 hydrocarbon radical possibly substituted by halogen, or halogen ethyl; or R.sub.1 is ethyl or allyl, R.sub.2 is phenyl, C.sub.1 to C.sub.3 alkylphenyl, C.sub.1 to C.sub.3 alkoxyphenyl or halogen phenyl, and R.sub.3 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.

Dependencies are inferred from the claim text.