摘要:
Novel N'-phenyl-N-methylurea derivatives of the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a methyl group or a methoxy group, R.sub.2 is a hydrogen atom or a lower alkyl group, R.sub.3, which may be the same or different, is a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group or a trifluoromethyl group, n is an integer of 0 to 5, X is a hydrogen atom or a halogen atom, Y is an oxygen atom or a sulfur atom and Z is a straight or branched C.sub.1 -C.sub.8 alkylene group which may have no less than one atom of oxygen and/or sulfur at the terminal of and/or inside the carbon chain, which shows a pronounced herbicidal activity against a wide variety of weeds in the cultivation of crop plants as well as a notable fungicidal activity agaist a wide variety of phytopathogenic fungi causing plant diseases to crop plants without any material toxicity to mammals and fish or chemical injury to said crop plants.
摘要:
A process for preparing a ketazine useful as an intermediate for the synthesis of hydrazine is disclosed. The process comprises reacting an aliphatic or aromatic ketone with ammonia and hydrogen peroxide in the presence of a catalyst of an arsenic compound to produce a corresponding ketazine.
摘要:
The present invention relates to novel bicyclic compounds useful as photographic silver halide developing agents, to the preparation of these compounds and to photographic products, processes and compositions employing the same. The subject compounds may be represented by the formula ##STR1## wherein R.sub.1 and R.sub.2, the same or different, each represents hydrogen, a hydrocarbon moiety, preferably an alkyl group, --COOH or --COOR.sup.1 wherein R.sup.1 is an alkyl group; R.sub.3 and R.sub.4, the same or different, each represent hydrogen or an alkyl group, R.sub.5 represents hydrogen or --COR.sup.2 wherein R.sup.2 is an alkyl group; R.sub.6 represents hydrogen when R.sub.5 is hydrogen and represents hydrogen or --OCOR.sup.3 wherein R.sup.3 is an alkyl group the same as R.sup.2 when R.sub.5 represents --COR.sup.2 ; X represents --OH, --NH.sub.2 or --NHCOR.sup.4 wherein R.sup.4 represents an alkyl group the same as R.sup.2 ; Y represents --OH or --OCOR.sup.5 wherein R.sup.5 represents an alkyl group the same as R.sup.2 ; and Z represents .dbd.O or .dbd.NCOR.sup.6 wherein R.sup.6 is an alkyl group the same as R.sup.2.
摘要:
N-methyl-N-(benzene sulfonic acid methylamide-N'-sulfenyl)-carbamic acid esters of the formula ##STR1## in which X is halogen, C.sub.1 -C.sub.6 alkyl or hydrogen, andR is a phenyl, naphthyl, benzodioxolanyl or indanyl radical optionally carrying at least one alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto, dialkylamino, trihalogenemethyl, halogeno, nitro, nitrile, cycloalkyl, formamidino, dioxanyl or dioxolanyl radical; or an oxime radical of the formula ##STR2## in which R.sup.1 and R.sup.2 each individually is alkyl, alkoxy, alkylthio or alkoxycarbonyl, the alkyl moieties of R.sup.1 and R.sup.2 optionally being linked to one another,which possess insecticidal and acaricidal properties.
摘要:
This invention relates to compounds having the formula ##STR1## in which R.sub.F is a perfluoro radical C.sub.n F.sub.2n+1 with n=1-20, and R is a C.sub.1-20 alkyl radical, a C.sub.4-15 cycloalkyl radical, a C.sub.5-20 cycloalkyl-alkyl radical, or a C.sub.6-20 aromatic radical.Said compounds constitute valuable intermediates for the synthesis of surface-active agents.
摘要:
Compounds of the formula ##STR1## wherein R.sup.1 is a hydrocarbyl group, W is a chlorine or bromine atom or --OR in which R is H, a salt-forming cation, an alkyl group or the residue of a pyrethroid alcohol are new pesticides or intermediates therefore. The compounds are prepared using a multi-step synthesis starting from the natural terpene, 3-carene.
摘要:
Ketazines having the general formula (I) ##STR1## wherein R.sub.1 represents alkyl group having 1 to 4 carbon atoms and R.sub.2 represents (i) an alkyl group having 1 to 4 carbon atoms or (ii) a phenyl group optionally substituted with an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogen group, and R.sub.1 and R.sub.2 together with the carbon atom to which they are both bonded may form a ring, are advantageously manufactured by reacting an aliphatic or aromatic ketone having the formula (II) ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, with ammonia and a peroxide compound or compounds in the presence of amorphous silica or palladium compounds, as a catalyst, at a temperature of from 0.degree. to 120.degree. C., in a liquid phase.
摘要:
Hydroxyimino-substituted aminoacetonitriles, intermediates in the preparation of substituted 2-aminopyrazines, which latter compounds are intermediates in the preparation of insecticidal benzoylpyrazinylureas.
摘要:
Analysis of proteinases is accomplished using conventional amino acid containing aromatic amine substrates. Aromatic amines such as 4-methoxy-2-naphthylamine (4M2NA), 2-naphthylamine, aminoisophthalic acid dimethyl ester, p-nitroaniline, 5-methoxy-1-aminofluorene and coumarin derivatives resulting from enzymatic hydrolysis of the substrate couples with aromatic aldehydes such as 5-nitrosalicylaldehyde (5-NSA), benzaldehyde and p-nitrobenzaldehyde to produce Schiff-base complexes which are water insoluble. Certain Schiff-base complexes produce a shift from blue to orange-red (visible) fluorescence. Such complexes are useful in the assay of enzymes.
摘要:
An imine compound is produced by reacting a benzophenone with ammonia in the presence of 0.01 to 10% by weight of a carboxylic acid as a catalyst at a reaction temperature of 50.degree. to 350.degree. C on the basis of benzophenone. Ammonia is fed to the reaction system continuously under a pressure of 2 to 15 atmospheres. A solvent may be used for the reaction. The catalyst carboxylic acid can be readily recovered and reused without any influence of water formed by the reaction and brings about no problem of corrosion to reactor apparatus.