Triazine derivatives

Details Triazine derivatives Triazine derivatives

1997-10-27

1999-12-21

Ford, John M.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

544206, C07D25118, A01N 4368

Patent

active

060049022

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to a novel triazine derivative, a process for the production thereof, and a herbicide containing the same as an active ingredient.


TECHNICAL BACKGROUND

Triazine derivatives described in International Laid-open Publication WO90/09378 to Applicant are safe to gramineous crops, rice in particular, in both post-emergence treatment and pre-emergence treatment and exhibit high herbicidal efficacy against weeds which are hard to control. The general formula of the basic structure of the triazine derivative described in the above Publication is as follows. ##STR2## wherein X.sup.1 is methyl, trifluoromethyl, methoxy or a fluorine atom, n is an integer of 0, 1 or 2, and R.sup.1 is haloalkyl.
The above herbicides having high crops-weeds selectivity can control weeds without causing phytotoxicity on crops in general use, while they sometimes cause phytotoxicity due to various factors such as weather, environment and erroneous use. In particular, growth-inhibiting (particularly, root-inhibiting) herbicides are liable to cause phytotoxicity under conditions of an excessive water content. It is therefore desired to develop a herbicide which can control weeds without causing phytotoxicity on crops under such bad conditions and which have higher crops-weeds selectivity.
It is an object of the present invention to develop a novel triazine derivative having high crops-seeds selectivity under bad conditions such as conditions of an excessive water content which are liable to induce phytotoxicity, i.e., having safety to gramineous crops under conditions which are liable to induce phytotoxicity and having high herbicidal efficacy against weeds which are hard to control.


DISCLOSURE OF THE INVENTION

The present inventors have made diligent studies for achieving the above object and have found that the crops-weeds selectivity can be remarkably improved by changing the R.sup.1 of a triazine derivative of the above base structure A from the haloalkyl group to an alkyl group on which an alkoxy group and/or a hydroxyl group may be substituted. The present invention has been accordingly completed.
That is, the first gist of the present invention consists in a triazine derivative of the general formula (I), ##STR3## wherein X.sup.1 is a linear or branched C.sub.1 .about.C.sub.4 alkyl group or a halogen atom, n is an integer of 0 or 1 to 4, provided that when n is 2 or more, a plurality of substituents X.sup.1 may be the same or different, and R.sup.1 is a linear or branched C.sub.1 .about.C.sub.10 alkyl group which may be substituted with 1 to 4 C.sub.1 .about.C.sub.4 alkoxy groups and/or hydroxy groups, provided that when the linear or branched C.sub.1 .about.C.sub.10 alkyl group is substituted with 2 or more C.sub.1 .about.C.sub.4 alkoxy groups and/or hydroxy groups, a plurality of the C.sub.1 .about.C.sub.4 alkoxy groups and/or hydroxy groups may be the same or different, or salt thereof (to be referred to as "triazine derivative (I)" hereinafter).
Further, the second gist of the present invention consists in a process for the production of a triazine derivative of the general formula (I), ##STR4## (wherein X.sup.1 is a linear or branched C.sub.1 .about.C.sub.4 alkyl group or a halogen atom, n is an integer of 0 or 1 to 4, provided that when n is an integer of 2 or more, a plurality of substituents X.sup.1 may be the same or different, and R.sup.1 is a linear or branched C.sub.1 .about.C.sub.10 alkyl group which may be substituted with 1 to 4 alkoxy groups and/or hydroxy groups provided that when the above linear or branched C.sub.1 .about.C.sub.10 alkyl group is substituted with 2 or more C.sub.1 .about.C.sub.4 alkoxy groups and/or hydroxyl groups, a plurality of the C.sub.1 .about.C.sub.4 alkoxy groups and/or hydroxy groups may be the same or different),
which process comprises reacting a salt of alkylbiguanide (to be referred to as "alkylbiguanide salt (II)" hereinafter) of the general formula (II), ##STR5## (wherein X.sup.1 and n are as defined above and X.sup.2 is a halogen a

REFERENCES:
patent: 5250686 (1993-10-01), Adachi et al.

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