HERBICIDE MEANS AND METHOD OF MAKING THE ACTIVE COMPONENT

Optically active phenoxypropionic acid derivs. of formula (I) are new. In (I) R is phenoxy, 2-pyridyloxy, 2-benzoxazolyloxy, 2-benzothiazolyloxy or benzyl, all substd. by R1 and R2, R1 is H, halo or CF3 (not H if R is phenoxy, pyridyl oxy or benzyl). R2=H, 1-4C alkyl, halo or NO2, Z is COOR3, COSR4,...

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Bibliographische Detailangaben
Hauptverfasser:	BIERINGER,HERMANN,DE, HOERLEIN,GERHARD,DE, HANDTE,REINHARD,DE, FRISCH,PETER,DE, SCHWERDTLE,FRIEDHELM,DE, LANGELUEDDEKE,PETER,DE, NESTLER,HANS-JUERGEN,DE
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HUNTING HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING
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Beschreibung
Zusammenfassung:	Optically active phenoxypropionic acid derivs. of formula (I) are new. In (I) R is phenoxy, 2-pyridyloxy, 2-benzoxazolyloxy, 2-benzothiazolyloxy or benzyl, all substd. by R1 and R2, R1 is H, halo or CF3 (not H if R is phenoxy, pyridyl oxy or benzyl). R2=H, 1-4C alkyl, halo or NO2, Z is COOR3, COSR4, CONR5R6, CONR7NR8R9 or CSNH2, R3 is H, 1-12C alkyl (opt. substd. by 1-6 halo and/or an OH, 1-6C alkoxy, 1-4C alkylthio, 1-6C alkoxy-(2-6C) alkoxy, 1-2C haloalkoxy, methoxyethoxyethoxy, mono- or di-(1-4C) alkylamino, phenyl, oxiranyl or phenoxy, the last opt. substd. by 1 or 2 halo or 1-4C alkyl), 5-6C cycloalkyl (opt. halogenated), 3-6C alkenyl (opt. halogenated), 5-6C cycloalkenyl, 3-4C alkynyl (opt. substd. by 1 or 2 1-6C alkyl, phenyl, halo or 1-2C alkoxy), phenyl (opt. substd. by 1-3 1-4C alkyl or alkoxy, halo, NO2 and CF3), furfuryl, tetrahydrofurfuryl or the equiv of a base. R4 is 1-6C alkyl (opt. substd. by 1-4C alkoxy, halo or phenyl the phenyl itself opt. substd. by 1-4C alkyl or halo), 3-6C alkenyl, or phenyl opt. substd. by 1-3 halo or 1-4C alkyl, R5 and R6=H, 1-6C alkyl (opt. substd. by OH), 5-6C cycloalkyl, or phenyl (opt. substd. by 1-3 1-4C alkyl or alkoxy, halo or CF3), or together they complete a 2,4 or 5 membered methylene chain in which one CH2 can be replaced by O, NH or NCH3. R5 and R6 cannot both be phenyl, R7 is H or CH3, R8 is H, CH3 or C2H5, R9 is H, CH3, C2H5 or phenyl, Proviso is that when R1=CH3, R2=H and R is phenoxy, then R3 cannot be H. (I) are herbicides useful e.g. for control of Alopecurus myosuroides, Echinochloa crus-galli and Avena fatua in sugar beet and wheat. The D-enantiomer is about twice as active as the racemate.