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Mitsui Toatsu Chemicals Inc
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Mitsui Toatsu Chemicals Inc
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Application filed by Mitsui Toatsu Chemicals IncfiledCriticalMitsui Toatsu Chemicals Inc
Priority to JP14828880ApriorityCriticalpatent/JPS5772947A/en
Publication of JPS5772947ApublicationCriticalpatent/JPS5772947A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Agricultural Chemicals And Associated Chemicals
(AREA)
Abstract
NEW MATERIAL:The diphenyl ether derivative of formulaI(R is H or lower alkyl; m is integer 3; X is halogen or CF3; n is integer 1W3; when n is ≥2, X may be a combination of different substituent groups).
USE: Herbicide having high selectivity and exhibiting remarkable herbicidal effect to the noxious weeds in the paddy rice field or plowed land, etc. It has extremely low phytotoxicity to paddy rice plant, etc. at a does for controlling the weeds.
PROCESS: The compound of formulaIis prepard by reacting 2-nitro-5-(substituted phenoxy)-aniline of formulaII with the compound of formula III (Z is halogen) or an acid anhydride of formula IV (l is 1W3) without solvent or as a solution in an inert solvent.