Condensed heterocyclic derivatives and herbicides

Details Condensed heterocyclic derivatives and herbicides Condensed heterocyclic derivatives and herbicides

1994-03-01

1997-04-01

Ford, John M.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

504193, 504243, 504239, 504221, 504225, 504228, 504209, 504236, 504240, 544229, 544333, 544295, 544300, 544310, 544316, 544317, 544318, 544319, 544321, 544327, 544328, 544 80, 544 82, 544122, 544123, 544296, 544116, 544235, 544284, 544324, 544331, 544183, 544179, C07D40312, C07D40306, C07D41310, A01N40354, C07D41710

Patent

active

056165374

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to condensed heterocyclic derivatives and their salts as well as herbicides containing them as active ingredients, which can be applied to paddy fields, upland fields and non-agricultural fields.


BACKGROUND ART

The present inventors found that quinoline and naphthalene derivatives have herbicidal activities and disclosed specific examples in Japanese Unexamined Patent Publication No. 56469/1990. Further, Japanese Unexamined Patent Publication No. 121973/1990 discloses that aromatic carboxylic acid derivatives containing quinoline, naphthalene, benzofuran, thiophene or pyridine ring have herbicidal activities.
However, the above-mentioned publications disclose nothing about specific compounds relating to the condensed heterocyclic derivatives of the present invention. Further, these compounds are not necessarily satisfactory from the viewpoint of the herbicidal effects. A number of other herbicides have been developed and contributed to the saving of energy for agricultural operations and to the improvement of the productivity. However, in their practical use, such herbicides also have various problems with respect to the herbicidal effects and the safety to crop plants.
The present inventors have conducted an extensive research on condensed heterocyclic derivatives with an object to develop a compound which is excellent in the herbicidal activities without bringing about phytotoxicity to crop plants. As a result, it has been found that the compounds of the present invention which are pyrimidine or triazine derivatives bonded to a condensed heterocyclic ring exhibit excellent herbicidal activities against not only annual weeds but also perennial gramineous weeds, cyperaceous weeds and broad leaf weeds in the paddy field treatment, upland soil treatment and foliage treatment, and they are highly safe to crop plants. The present invention has been accomplished on the basis of this discovery.


DISCLOSURE OF THE INVENTION

Namely, the present invention relates to a condensed heterocyclic derivative of the formula (I): ##STR2## {wherein A is a heterocyclic ring of the formula ##STR3## R is a hydrogen atom, a hydroxyl group, an alkoxy group which may be substituted, a benzyloxy group which may be substituted, an aryloxy group which may be substituted, an alkylthio group which may be substituted, a benzylthio group which may be substituted, an arylthio group which may be substituted, an alkenyloxy group which may be substituted, an alkynyloxy group which may be substituted, an alkenylthio group which may be substituted, an alkynylthio group which may be substituted, an alkylideneaminoxy group, or a group of the formula --NR.sup.6 R.sup.7 (wherein each of R.sup.6 and R.sup.7 which may be the same or different, is a hydrogen atom, an alkyl group, an alkoxy group, a benzyl group, an aryl group which may be substituted, an alkylsulfonyl group, or an arylsulfonyl group which may be substituted, or R.sup.6 and R.sup.7 may, together with the nitrogen atom, form a ring which may contain a hetero atom), each of R.sup.1 and R.sup.2 which may be the same or different, is a hydrogen atom, a formyl group, an alkylcarbonyl group which may be substituted, a cycloalkylcarbonyl group, an arylcarbonyl group which may be substituted, a pyridylcarbonyl group which may be substituted, a carboxyl group, a group of the formula --CONR.sup.6 R.sup.7 (wherein R.sup.6 and R.sup.7 are as defined above), an alkylthiocarbonyl group which may be substituted, a cycloalkylthiocarbonyl group, an aryloxycarbonyl group which may be substituted, an alkoxycarbonyl group which may be substituted, a cycloalkyl group, an alkyl group which may be substituted, an alkenyl group which may be substituted, an alkynyl group which may be substituted, an alkoxy group which may be substituted, an aryl group which may be substituted, a halogen atom, a benzyloxycarbonyl group which may be substituted, a benzylthiocarbonyl group which may be substituted, a cycloalkoxycarbonyl group, an arylthiocarbonyl group which ma

REFERENCES:
patent: 4286054 (1981-08-01), Englemann
patent: 5015285 (1991-05-01), Rheinheimer et al.
Mizuno et al; Chemical Abstracts, vol. 113, entry 54345M (1990).
Wada et al; Chemical Abstracts, vol. 110, entry 95264 (1989).

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