Iminosulfonylurea dirivatives and herbicides

Details Iminosulfonylurea dirivatives and herbicides Iminosulfonylurea dirivatives and herbicides

1994-04-15

1996-03-19

Ford, John M.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

540601, 544320, 544321, 544323, 544324, 544331, 544332, C07D40312, C07D41312, H01N 4354

Patent

active

055004067

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This application is a 371 of PCT/JP92/00808 filed Jun. 25, 1992.
The present invention relates to novel iminosulfonylurea derivatives, and herbicides containing them as active ingredients.


BACKGROUND TECHNIQUE

It is indispensable to use herbicides to protect important crop plants such as rice, wheat, corn, soybean, cotton and sugar beet from weeds and thereby to increase the harvest. Especially in recent years, a selective herbicide is desired which is capable of selectively killing weeds without showing any phytotoxicity against crop plants when applied to the foliages of crop plants and weeds simultaneously in a field where such useful crop plants and weeds are coexistent. Further, with a view to avoiding environmental pollution and reducing the costs for transportation and application, researches and developments have been conducted for many years for compounds having high herbicidal effects at low doses. Some of the compounds having such properties are presently used as selective herbicides. However, there still exists a need for better new compounds having such properties.
As the prior art showing a chemical structure similar to that of the compounds of the present invention, Japanese Unexamined Patent Publications No. 15962/1983, No. 103371/1983, No. 126859/1983, No. 48973/1985, No. 214785/1985, No. 134377/1986, No. 151577/1989, No. 45473/1990, No. 91060/1990, No. 7284/1991 and No. 68562/1991, and U.S. Pat. Nos. 4,559,081, 4,592,776, 4,602,939, 4,622,065, 4,666,508, 4,696,695 and 4,741,762, disclose compounds having sulfonylurea bonded to a nitrogen atom. However, compounds having sulfonylurea bonded to a nitrogen atom of an imino structure like the compounds of the present invention have not been known at all, and they are novel compounds.


DISCLOSURE OF THE INVENTION

The present inventors have conducted extensive researches over years to develop selective herbicides for important crop plants and have studied herbicidal properties of many compounds with an aim to find out compounds having higher herbicidal activities as well as selectivity. As a result, it has been found that an iminosulfonylurea derivative of the formula (1) or an agriculturally suitable salt thereof: ##STR1## wherein in Q1, Q2 and Q5, E is a sulfur atom, an oxygen atom or a nitrogen atom mono-substituted by an optional substituent other than a hydrogen atom; in Q6, Q7 and Q8, J is a sulfur atom or an oxygen atom; in Q1 to Q8, a nitrogen atom in the ring of Q is substituted by an optional substituent other than a hydrogen atom, and a carbon atom in the ring of Q may be substituted by an optional substituent; and in Q9, the sulfur atom and the nitrogen atom on the carbon atom to which the imino group of Q is bonded, are substituted by optional substituents other than hydrogen atoms, wherein Q is preferably ##STR2##
R.sup.a1 is a C.sub.1-8 alkyl group, a C.sub.3-7 cycloalkyl group, a C.sub.1-6 alkyl group substituted by a C.sub.3-7 cycloalkyl group, a C.sub.3-7 cycloalkenyl group, a C.sub.1-6 alkyl group substituted by a C.sub.3-7 cycloalkenyl group, a C.sub.2-8 alkenyl group, a C.sub.2-8 alkynyl group, a C.sub.1-6 alkyl group substituted by a C.sub.1-6 alkoxy group, a C.sub.1-6 alkyl group substituted by a C.sub.2-6 alkenyloxy group, a C.sub.1-6 alkyl group substituted by a C.sub.2-6 alkynyloxy group, a C.sub.1-6 alkyl group substituted by a mono-, di- or poly-halogeno C.sub.1-6 alkoxy group, a C.sub.1-6 alkyl group substituted by a mono-, di- or poly-halogeno C.sub.2-6 alkenyloxy group, a C.sub.1-6 alkyl group substituted by a mono-, di- or poly-halogeno C.sub.2-6 alkynyloxy group, a C.sub.1-6 alkyl group substituted by a C.sub.1-6 alkylthio group, a C.sub.1- 6 alkyl group substituted by a C.sub.1-6 alkylsulfinyl group, a C.sub.1-6 alkyl group substituted by a C.sub.1-6 alkylsulfonyl group, a mono-, di- or poly-halogeno C.sub.1-8 alkyl group, a mono-, di- or poly-halogeno C.sub.2-8 alkenyl group, a mono-, di- or poly-halogeno C.sub.2-8 alkynyl group, a C.sub.1-6 alkyl group substituted by a cyano group, a C.su

REFERENCES:
Chemical Abstracts, vol. 104, No. 13, Mar. 31, 1986, AN 109685u, JP-A-60 214 785, Oct. 28, 1985.

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