Abstract:
The family of dyes of the invention are fluoresceins and rhodols that are directly substituted on one or more aromatic carbons by fluorine. These fluorine-substituted fluorescent dyes possess greater photostability and have lower sensitivity to pH changes in the physiological range of 6-8 than do non-fluorinated dyes, exhibit less quenching when conjugated to a substance, and possess additional advantages. The dyes of the invention are useful as detectable tracers and for preparing conjugates of organic and inorganic substances.
Abstract:
Herbicidal and plant growth-regulating N-aryl heterocycles of the formula ##STR1## where A represents one of the groupings ##STR2## where R.sup.1 and R.sup.2 in each case independently of one another represent hydrogen, halogen, halogenoalkyl or alkyl,Y.sup.1 and Y.sup.2 in each case represent oxygen or sulphur andZ represents hydrogen, hydroxyl or chlorine, R represents in each case optionally branched alkyl, alkenyl, cycloalkyl, cycloalkenyl, cycloalkylalkyl or cycloalkenylalkyl in each case interrupted by at least one oxygen atom and in each case substituted by at least one fluorine atom,X represents hydrogen or halogen andY represents hydrogen or halogen.
Abstract:
A new substituted metaaminophenol of formula (I): ##STR1## wherein Z represents a monohydroxylated or polyhydroxylated hydrocarbon radical of 1 to 6 carbon atoms or an aminoalkyl radical of the formula: ##STR2## wherein n is an integer from 1 to 6 and R.sub.1 and R.sub.2, which are identical or different, represent a hydrogen atom or an alkyl or hydroxyalkyl radical of 1 to 6 carbon atoms or an acyl radical of 1 to 4 carbon atoms, and R represents a hydrogen atom, an alkyl radical or monohydroxyalkyl or polyhydroxyalkyl, monocarbamylalkyl, dicarbamylalkyl, aminoalkyl, acyl, carbalkoxy, carbamyl or monoalkylcarbamyl radical, the abovementioned alkyl radicals containing 1 to 6 carbon atoms, or an acid salt thereof with the proviso that if R represents a hydrogen atom, Z cannot represent --CH.sub.2 CH.sub.2 OH is disclosed, together with a process for their preparation, hair-dyeing compositions containing them and a hair-dyeing process.
Abstract:
A process for producing 1,3-bis(3-aminophenoxy)-benzenes which are very useful as a monomer for heat-resistant high molecular weight polymers is provided, which process comprises dehalogenating a bis(3-aminophenoxy)-halogenobenzene by its reduction, which compound is selected from the group consisting of 1,3-bis(3-aminophenoxy)-5-halogenobenzenes, 1,3-bis(3-aminophenoxy)-2,4-dihalogenobenzenes and 1,5-bis(3-aminophenoxy)-2,4-dihalogenobenzenes, these raw material compounds being respectively obtained by reacting a 1,3,5-trihalogenobenzene, a 1,2,3,4-tetrahalogenobenzene or a 1,2,4,5-tetrahalogenobenzene with 3-aminophenol in the presence of a dehydrohalogenating agent.
Abstract:
There is disclosed diamines of the formula ##STR1## wherein R.sub.6 is H, Cl, or CH.sub.3 ; andR.sub.8 " is H, Cl, or CH.sub.3, with the provisos that(a) if R.sub.8 " is H or CH.sub.3, R.sub.7 " is CH.sub.3 ; and(b) if R.sub.8 " is Cl, R.sub.7 " is F; and(c) if R.sub.6 and R.sub.8 " are both H, R.sub.7 " is any of CH.sub.3, F, CF.sub.3, trifluoromethoxy, trifluoromethylsulfonyl, cyclohexyl, C.sub.2 -C.sub.10 alkyl, p-chlorophenoxy or p-chlorophenyl alkyl having 7 or 8 carbon atoms. The diamines have algicidal activity.
Abstract:
The invention provides novel phenoxyalkylcarboxylic acids which are useful in therapy as metabolic regulators and in agriculture as selective herbicides.
Abstract:
The present disclosure relates to substituted hydroxystilbene compounds and derivatives, specifically 2-substituted hydroxystilbene compounds and derivatives, the synthesis of such compounds and their use in therapy.
Abstract:
The present invention relates to a method for preparing methylated amines using carbon dioxide and to the use of the method for manufacturing vitamins, pharmaceutical products, glues, acrylic fibres and synthetic leathers, pesticides and fertilisers. The invention also relates to a method for manufacturing vitamins, pharmaceutical products, glues, acrylic fibres, synthetic leathers, pesticides and fertilisers, including a step of preparing methylated amines by the method according to the invention. The present invention also relates to a method for preparing marked methylated amines and to the uses thereof.
Abstract:
The present invention relates to a method for preparing methylated amines using carbon dioxide and to the use of the method for manufacturing vitamins, pharmaceutical products, glues, acrylic fibres and synthetic leathers, pesticides and fertilizers. The invention also relates to a method for manufacturing vitamins, pharmaceutical products, glues, acrylic fibres, synthetic leathers, pesticides and fertilizers, including a step of preparing methylated amines by the method according to the invention. The present invention also relates to a method for preparing marked methylated amines and to the uses thereof.
Abstract:
The present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide or amine moiety and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In additional embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between a nitrogen atom of an acyl hydrazine and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In other embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of a nitrogen-containing heteroaromatic, e.g., indole, pyrazole, and indazole, and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-oxygen bond between the oxygen atom of an alcohol and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. The present invention also relates to copper-catalyzed methods of forming a carbon-carbon bond between a reactant comprising a nucleophilic carbon atom, e.g., an enolate or malonate anion, and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. Importantly, all the methods of the present invention are relatively inexpensive to practice due to the low cost of the copper comprised by the catalysts.