Tetrasubstituted urea compounds and herbicidal compositions

Details Tetrasubstituted urea compounds and herbicidal compositions Tetrasubstituted urea compounds and herbicidal compositions

1973-09-10

1977-11-15

Gerstl, Robert

Chemistry: fertilizers

Processes and products

Forms or conditioning

260553A, 260553R, 560251, 560106, 560228, 560221, 560 62, 560124, 560123, 560122, 560 1, 560128, C07C12715, C07C12717, C07C12719

Patent

active

040583929

ABSTRACT:
New N,N'-tetrasubstituted ureas of the formula ##STR1## in which X is oxygen, sulfur or an NR.sup.5 -- or SO.sub.2 --group,
R is alkyl or an optionally substituted aryl group, or an optionally substituted aralkyl group,
R.sup.1 and R.sup.4 are individually optionally substituted hydrocarbyl which may contain oxygen or sulfur,
R.sup.2 is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxy or cycloalkyl,
R.sup.3 is alkyl, which may optionally be substituted by halogen, or is alkenyl, or
R.sup.2 and R.sup.3 conjointly form an alkylene bridge, which can be interrupted by a hetero-atom, such as O, or N-alkyl group and which forms a heterocyclic ring with the adjoining nitrogen atom,
R.sup.1 and R.sup.5, independently of one another, are each alkyl or conjointly form an alkylene bridge, which can be interrupted by a hetero-atom, such as O, and which forms a heterocyclic ring with the adjoining nitrogen atom; and
Y is oxygen or sulfur; are remarkably effective and selective herbicides.

REFERENCES:
patent: 3808262 (1974-04-01), Zeeh et al.
patent: 3847971 (1974-11-01), Koenig et al.
patent: 3860644 (1975-01-01), Krenzer et al.

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