摘要:
Pigweed is combated in sugar beet fields by applying postemergently to the locus of the pigweed a herbicidally effective amount of a composition comprising one part by weight of methyl 3-(N''-m-tolylcarbamoyl)carbanilate and from one-fourth to two parts by weight of 2-(m-chlorophenyl)-4H-3,1-benzoxazin-4-one.
摘要:
D R A W I N G Undesired vegetation, particularly noxious grasses in growing crops, are combated by pre-emergent application of selective herbicides made by reacting an organic compound having a reactive halogen substituent with a 2,3-epithiopropyl N,Ndialkylthiolcarbamate to yield a compound of the structural formula
IN WHICH R and R'' represent hydrocarbon substituents containing less than 10 carbon atoms, X is halogen, preferably bromine or chlorine and Y may be alkanoyl, chloroalkanoyl, bromoalkanoyl, alkoxyalkanoyl, N,N-dialkylcarbamyl, carbalkoxycarbonyl, alkoxymethyl, alkoxyethyl, chlorobenzoyl, bromobenzoyl, chlorophenoxyacetyl, bromophenoxyacetal, cyclopropylcarbonyl, cyano, methanesulfonyl, alkanoylmethyl alkylmercaptomethyl, nitrobenzoyl, chlorocarbalkoxyl, bromocarbalkoxyl, ethynylmethyl, dialkylphosphono, dialkylthiophosphono or alkylmercaptocarbonyl, said alkanoyl, alkoxy, carbalkoxy and alkyl structures containing less than 10 carbon atoms.
摘要:
Allyl N,N-disubstituted thiocarbamates are manufactured by reacting a secondary amine with carbon disulfide and epichlorohydrin to yield a 2,3-epithiopropyl thiocarbamate, followed by desulfurization by heating or reaction with a desulfurizing reagent. The products are useful as pre-emergent herbicides.