摘要:
The disclosure herein relates to substituted 2-alkylsulfonylalkyl nitrobenzenes and a process for the preparation thereof. The compounds herein are useful as intermediates in the preparation of certain substituted anilines used as reactants in the preparation of 2-haloacetanilide herbicides.
摘要:
The present invention is directed to a process for the preparation of certain N-substituted-2-haloacetanilides via the reaction of a secondary 2-haloacetanilide with a haloalkyl ether, particularly, halomethyl ethers, which comprises forming the ether in situ by the in-solvent reaction of an alcohol, formaldehyde or other aldehyde and an acid halide to produce high purity haloalkyl ethers, while decreasing the concentration of undesirable bis by products, as for example bis(chloromethyl) ether. The ether formed in situ thereafter reacts with the secondary 2-haloacetanilide in the presence of a phase transfer catalyst and base to form the N-substituted-2-haloacetanilide.
摘要:
The invention herein pertains to nitro-methyl or ethyl substituted benzotrifluoride compounds useful as chemical intermediates and a process for their preparation. The chemical intermediates are useful for the preparation of substituted anilines which are precursors for a new class of 2-haloacetanilide herbicides.
摘要:
This disclosure relates to a class of alpha-chloro-N-alkoxymethyl-N-(2,6-dialkoxyphenyl)acetamides which are effective in regulating the natural growth or development of plants. As employed herein, the term "natural growth or development" designates the normal life cycle of the plant in accordance with its genetics and its environment, in the absence of artificial, external influences. More particularly, this disclosure is concerned with a method wherein turfgrasses are treated with an alpha-chloro-N-alkoxymethyl-N-(2,6-dialkoxyphenyl)acetamide which serves to retard or reduce the rate of turfgrass growth. Such a treatment may also serve to retard or reduce the formation of seedheads and seedhead stalk elongation.
摘要:
Compounds of the formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently hydrogen, halogen, C.sub.1-6 alkyl, or haloalkyl; R.sub.4 is hydrogen; C.sub.1-4 alkyl, alkenyl, alkoxy, haloalkyl; C.sub.1-2 alkylamino, C.sub.1-2 alkylthio, C.sub.2-4 cycloalkyl, C.sub.2-6 alkoxyalkyl, C.sub.2-6 alkylthiomethyl, amino, phenoxy, phenamino, or furan; and R.sub.5 is hydrogen or C.sub.1-4 alkyl, are useful to retard the growth of turf grass.
摘要:
The growth of turf grass can be retarded by applying to said turf grass an effective growth retarding amount of a compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently hydrogen, halogen, C.sub.1-6 alkyl, or haloalkyl; R.sub.4 is hydrogen; C.sub.1-4 alkyl, alkenyl, alkoxy, haloalkyl; C.sub.1-2 alkylamino, C.sub.1-2 alkylthio, C.sub.2-4 cycloalkyl, C.sub.2-6 alkoxyalkyl, C.sub.2-6 alkylthiomethyl, amino, phenoxy, phenamino, or furan; and R.sub.5 is hydrogen or C.sub.1-4 alkyl.
摘要:
The present invention is directed to a process for the preparation of certain N-substituted-2-haloacetanilides via the reaction of a secondary 2-haloacetanilide with a haloalkyl ether, particularly, halomethyl ethers, which comprises forming the ether in situ by the in-solvent reaction of an alcohol, formaldehyde or other aldehyde and an acid halide to produce high purity haloalkyl ethers, while decreasing the concentration of undesirable bis by products, as for example bis(chloromethyl) ether. The ether formed in situ thereafter reacts with the secondary 2-haloacetanilide in the presence of a phase transfer catalyst and base to form the N-substituted-2-haloacetanilide.
摘要:
A compound having the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen or lower alkyl, said compound possessing herbicidal properties.
摘要:
N-Nitroso-N-phosphonomethylglycine compounds have been produced by the reaction of an inorganic nitrite and N-phosphonomethylglycine. These compounds are useful as post-emergent herbicides.