Showing papers on "Halogen published in 1980"
TL;DR: In this article, high yield routes to the unstable halogen azides and isocyanates have permitted vacuum ultraviolet photoelectron spectra to be obtained for the chlorine and bromine azides, and the chlorine, brominine and iodine isocalates.
50 citations
Patent•
30 May 1980TL;DR: In this paper, the first medical use of compounds of the formula (III) was described, and a process for preparing such compounds and intermediates through which this process proceeds was described.
Abstract: The present invention provides compounds of the formula (III):
or an acid addition salt thereof, wherein R 6 is chlorine, bromine, iodine, C 1 - 4 alkyl or trifluoromethyl, R 7 is hydrogen, halogen, C 1-4 alkyl or trifluoromethyl or R 6 and R 7 form a -CH=CH-CH=CH- group optionally substituted by a halogen atom or a C 1-4 alkyl or trifluoromethyl group, R 8 is hydrogen, halogen, C 1-4 alkyl or trifluoromethyl, R 9 is hydrogen, halogen, C 1-4 alkyl or trifluoromethyl, R 10 is hydrogen, methyl or fluorine and R" is amino, C 1-4 acylamino or di-substituted aminomethyleneamino provided that, at most, only two of R 7 ―R 10 are other than hydrogen and that R 7 ―R 10 are not all hydrogen when R 6 is chlorine. Also provided are pharmaceutical compositions containing compounds of the formula (III), the first medical use of compounds of the formula (III), a process for preparing such compounds and intermediates through which this process proceeds.
50 citations
Patent•
11 Mar 1980
TL;DR: In this paper, a color display for nematic liquid crystal color display elements is presented, in which at least one anthraquinonic dye represented by the following formula is represented: X and Y are identical or different and represent --NH 2 or --OH; Z represents halogen, --OR, --NHR, and R 2 is a phenyl group, an alkyl group having 2 to 5 carbon atoms or a cyclohexyl group; n is an integer of 1 or 2 provided that when X is NH 2 and Y is --OH, and when
Abstract: A composition for nematic liquid crystal color display elements, said composition comprising at least one anthraquinonic dye represented by the following formula ##STR1## wherein X and Y are identical or different and represent --NH 2 or --OH; Z represents halogen, --OR, --NHR, ##STR2## --CONHR 2 or --COOR 2 , in which R represents an alkyl group having 1 to 15 carbon atoms or a lower alkyl group optionally substituted by --OH, ##STR3## represents hydrogen, halogen, --OH, --OCH 3 , an alkyl group having 1 to 15 carbon atoms, or a methoxy group optionally substituted by ##STR4## and R 2 is a phenyl group, an alkyl group having 2 to 5 carbon atoms or a cyclohexyl group; and n is an integer of 1 or 2 provided that when X is --NH 2 and Y is --OH, and when X and Y are both --OH, n is an integer of 1, and when n represents an integer of 2, the two Z's may be identical or different dissolved in at least one nematic liquid crystal.
41 citations
Patent•
30 Dec 1980
TL;DR: In this paper, a supported titanium catalyst is produced by cogrinding, in combination of a magnesium halide, tetravalent titanium halide and organic acid ester.
Abstract: A supported titanium catalyst is produced by cogrinding, in combination, a magnesium halide, tetravalent titanium halide, organic acid ester, and a halogen compound selected from organic halogen compounds and halogen-containing compounds of Group IVa elements of the Periodic Table except carbon, and then treating the resulting titanium-containing solid with a hydrocarbon and/or a halogen compound as described above. The resulting supported titanium catalyst, when employed as a titanium component with an organo aluminum catalyst component for the catalyst system in a process for stereoregular polymerization of alpha -olefins results in unexpectedly high polymerization activity and high stereoregular polymer yielding ratios.
40 citations
TL;DR: In this article, the catalytic activity of the complexes in the hydrogenation of mono-and diolefins depends upon the basicity of the phosphine present, and their reactions with halogens, methyl iodide, chlorotrimethylsilane, carbon monoxide and hydrogen have been studied.
34 citations
TL;DR: In this article, it was shown that in many cases even primary chlorine in -CF 2 Cl groups can be replaced by -OSO 2 F, Primary bromine or iodine in CF 2 X are more readily replaced.
26 citations
Patent•
04 Sep 1980TL;DR: In this article, a polymer derived from an alpha-hydroxyacrylic acid, where R1 and R2 represent hydrogen or an alkyl group comprising from 1 to 3 carbon atoms which can be substituted by a hydroxyl group or a halogen atom, R 1 and R 2 being identical or different, and where M represents an alkali metal atom, a hydrogen atom or an ammonium group, is added to the solution as a stabilizer.
Abstract: Process for stabilizing solutions of peroxidic compounds used for bleaching. At least one polymer derived from an alpha-hydroxyacrylic acid, which contains units of the formula ##STR1## where R1 and R2 represent hydrogen or an alkyl group comprising from 1 to 3 carbon atoms which can be substituted by a hydroxyl group or a halogen atom, R1 and R2 being identical or different, and where M represents an alkali metal atom, a hydrogen atom or an ammonium group, is added to the solution as a stabilizer.
26 citations
TL;DR: Experimental work on the reaction of SO2, H2O and I2 is described in this article, where results obtained with SO2 only and with addition of diethylether and TBP are discussed, also in view of application of this reaction in possible thermochemical cycles.
25 citations
TL;DR: The addition of organic halogen compounds to olefins in the presence of cuprous chloride under U.V. irradiation gave 1:1 adducts.
24 citations
TL;DR: In this article, a method for separating the chloride and bromide from the solution concomitants by passing the sample through a silver-loaded ion exchange system is described, and the halide is then eluted from this column with ammonium hydroxide.
Abstract: The method involves a separation of the chloride and/or bromide from the solution concomitants by passing the sample through a silver-loaded ion exchange system. The halide is then eluted from this column with ammonium hydroxide. The coeluted silver is trapped in a Jones reductor leaving the halides in an ammoniacal solution ideally suited for an ion chromatographic finish analysis. The separation procedure is quantitative and effectively eliminates most of the interferences encountered in the direct analyses of the complex solutions encountered in the nuclear fuel reprocessing industry.
23 citations
TL;DR: In this paper, an electrochemical sensor for the determination of ambient sulfur dioxide by reaction with electrochemically generated bromine in a thin-layer cell was described. But the sensor was not designed for the measurement of bromines.
Abstract: An electrochemical sensor is described for the determination of ambient sulfur dioxide by reaction with electrochemically generated bromine in a thin-layer cell. Sulfur dioxide in the gas phase diffuses through a porous, hydrophobic membrane into a thin layer of solution in which bromine is generated electrochemically. The quantity of bromine at the gas-solution interface is determined by reduction at a gold cathode situated on the solution side of the porous wall separating the gas phase from the solution phase. The diffusion of sulfur dioxide through the porous membrane into the thin-layer cell decreases the amount of bromine reaching the gold cathode. This decrease produces a change in current that is proportional to the concentration of sulfur dioxide in the gas phase. The device was evaluated for sensitivity and stability for the determination of ppM levels of sulfur dioxide.
Patent•
17 Dec 1980TL;DR: Phenylacetic acid amide compounds of the formula "STR1" have an atomic number of not more than 35 or trifluoromethyl as discussed by the authors.
Abstract: Phenylacetic acid amide compounds of the formula ##STR1## in which R1 is hydrogen, lower alkyl, lower alkoxy, halogen having an atomic number of not more than 35 or trifluoromethyl, R2 is hydrogen, lower alkyl, lower alkoxy, halogen having an atomic number of not more than 35 or trifluoromethyl, R3 is hydrogen, lower alkyl, lower alkoxy or halogen having an atomic number of not more than 35 and R4 is hydrogen, lower alkyl, lower alkoxy or halogen having an atomic number of not more than 35, and in which R5 is a radical of aliphatic character containing the group R6, R6 and R7 are each hydrogen or together are a divalent aliphatic radical and the group of the formula --C(═O)--R8 (Ia) is a carboxyl group, which can be functionally modified, and their salts are useful as anti-inflammatory agents.
TL;DR: In this article, the planar four-coordinate complex Ni(C18H14N4) with halogens (bromine and iodine) was shown to form semiconducting solids with specific conductivity 4.4 × 10−3 ohm−1cm−1
Patent•
20 Sep 1980
TL;DR: In this paper, a novel process for the preparation of diphenyl ethers of the formula in the n eineganzeZahlvon 1 to 3, R, is described.
Abstract: It is a novel process for the preparation of diphenyl ethers of the formula in the n eineganzeZahlvon 1 to 3, R, is hydrogen, halogen, alkyl having 1 to 8 C atoms, CN, trifluoromethyl, acetyl, C R Alkyl, alkenyl or alkynyl having up to 18 carbon atoms; a by hydroxy, C optionally halogen or CF-substituted benzyl, NR X The method consists in the reaction of the compounds of the formula imit amines of the formula HNR. The compounds of formula I which are novel, have particular herbicidal activity.
TL;DR: In this paper, the authors used the technique of arrested relaxation infrared chemiluminescence to investigate the reactions of halogen atoms with various deuterated olefinic and aromatic compounds.
Abstract: The technique of arrested relaxation infrared chemiluminescence has been used to investigate the reactions of halogen atoms with various deuterated olefinic and aromatic compounds. From infrared emission spectra of the products, the vibrational energy distributions were measured and then compared to the distributions resulting from statistical partitioning of energy. The reactions studied here are reactions of fluorine atoms with ethylene‐d4, vinyl chloride‐d3, vinyl bromide‐d3, benzene‐d6, toulene‐d8, chlorobenzene‐d5, and bromobenzene‐d5 and the reaction of chlorine atoms with vinyl bromide‐d3. Nonstatistical product energy distributions were observed for the F+ethylene‐d4 and Cl+vinyl bromide‐d3 reactions. All other reactions showed a statistical distribution of energy among the modes that were observed. The mechanism of distribution of energy among vibrational modes in intermediate size molecules is discussed in relation to these results.
TL;DR: In this article, Nitro-heterocycles, particularly those containing halogen, were selectively reduced with sodium sulfide in aqueous p-dioxane to give the corresponding amino heterocycles in 70-89% yields.
Patent•
08 Dec 1980TL;DR: In this article, the authors proposed a method of using 3-hydroxydiphenyl ethers for combating micro-organisms, with the proviso that each phenyl nucleus contains at least one halogen atom, but the total number of halogen atoms in the molecule does not exceed 4.
Abstract: 3-Hydroxydiphenyl ethers of the formula ##STR1## wherein R 1 represents hydrogen, fluorine or chlorine, each of R 2 and R 3 independently represents hydrogen or chlorine, and each of R 4 , R 5 and R 6 independently represents hydrogen, fluorine, chlorine, bromine or alkyl of 1 to 4 carbon atoms, with the proviso that each phenyl nucleus contains at least one halogen atom, but the total number of halogen atoms in the molecule does not exceed 4, processes for their production and a method of using them for combating micro-organisms.
Patent•
01 Jul 1980
TL;DR: Herbicidal mixtures comprising (1) a diphenyl ether compound of the formula (I): as discussed by the authors, wherein R 1 is an alkyl group optionally substituted by halogen or phenyl; R 2 is hydrogen, halogen, or nitro; R 3 is hydrogen and/or trifluoroemthyl or cyano; R' is hydrogen or triffluoromethyl;
Abstract: Herbicidal mixtures comprising (1) a diphenyl ether compound of the formula (I):
wherein R 1 is an alkyl group optionally substituted by halogen or phenyl; R 2 is hydrogen, halogen or nitro; R 3 is hydrogen, halogen, alkyl, trifluoroemthyl or cyano; R' is hydrogen, halogen or trifluoromethyl;R' is halogen, or trifluoromethyl; and R 6 is hydrogen, or C,-C. alkyl, and (2) another herbicide not of the formula (I).
Patent•
28 Mar 1980TL;DR: In this paper, charge transfer complex cathodes for use in solid cell systems where the cathodes are the reaction products of a halogen such as iodine or bromine with a carbonaceous pitch such as mesophase pitch are presented.
Abstract: Charge transfer complex cathodes for use in solid cell systems wherein the cathodes are the reaction products of a halogen such as iodine or bromine with a carbonaceous pitch such as mesophase pitch
TL;DR: In this paper, mass spectrometry was used to investigate the volatile species given off when polyacetylene, which had been exposed to I 2, Br 2, Cl 2, or F 2, was heated in vacuo.
TL;DR: When an iron solution in an organic solvent is examined by atomic-absorption spectroscopy, the signal decreases to below that for a comparable aqueous solution, most pronounced for halogen-containing solvents.
TL;DR: In this article, a refined and extensive experimental study of the system H+H'X is reported (X is a halogen cl and I and H' an isotopic variant namely D).
Abstract: A refined and extensive experimental study of the system H+H’X is reported (X is a halogen cl and I and H’ an isotopic variant namely D. (AIP)
TL;DR: In this article, a selective synthesis of pseudoionone was achieved by the acetylenic oxy-Cope rearrangement of 4-isopropenyl-3,7-dimethyl-6-octen-1-yn-3-ol (3 ) in N-methyl-2-pyrrolidone solvent containing a trace of hydrochloric acid, hydrobromic acid and ammonium bromide and ionium chloride catalysts.
Patent•
03 Apr 1980TL;DR: In this paper, a procedure for making ω-I123 labeled fatty acids in which the ωbromo-fatty acid is applied in a thin film or layer to a support and is there contacted in molten state with the I123 iodide to effect halogen exchange.
Abstract: A procedure for making ω-I123 labeled fatty acids in which the ω-bromo-fatty acid is applied in a thin film or layer to a support and is there contacted in molten state with the I123 iodide to effect halogen exchange.
TL;DR: In this paper, the Raman and infrared intensities for the v I-I vibration band in charge transfer complexes with pyridines were determined and compared with the parameters of the previously studied bromine complexes.
Patent•
25 Jun 1980
TL;DR: In this article, the present invention concerns substituted heterocyclic phenoxyamines having the following formula: ##STR1## their pharmacologically acceptable acid salts, quaternary ammonium salts, their N-oxides, their levorotatory and dextrorotatory isomers and the processes for the preparation thereof.
Abstract: The present invention concerns substituted heterocyclic phenoxyamines having the following formula: ##STR1## their pharmacologically acceptable acid salts, their quaternary ammonium salts, their N-oxides, their levorotatory and dextrorotatory isomers and the processes for the preparation thereof. In the above formula: m=0 or 2 n=0 or 2 provided that m+n=2 A represents hydrogen, a lower alkoxy or lower alkenyloxy group, X represents a halogen, R represents hydrogen or a saturated or unsaturated aliphatic and/or cyclic hydrocarbon radical such as in particular lower alkyl, lower alkenyl, cycloalkyl and cycloalkyl-alkyl, cycloalkenyl and cycloalkenyl-alkyl. The compounds of the invention are useful as local anaesthetics.
TL;DR: In this paper, the formation of Ps in various organic liquids, such as neopenane, n-hexane, alcohols, etc. was studied in the presence of various organic mono-halides and/or various aromatic compounds.
Patent•
01 May 1980
TL;DR: In this paper, a process for the production of solid ion ductor materials (electrolytes) based on lithium or sodium compounds which stand in thermodynamic equilibrium with their alkali metal and have a high decomposition voltage is presented.
Abstract: The present invention provides a process for the production of solid ion ductor materials (electrolytes) based on lithium or sodium compounds which stand in thermodynamic equilibrium with their alkali metal and have a high decomposition voltage, wherein two or more binary lithium or sodium compounds with an anion which is formed from one or more elements of the group consisting of nitrogen, phosphorus, arsenic, oxygen, sulphur, selenium, tellurium, hydrogen, fluorine, chlorine, bromine and iodine and which stand in thermodynamic equilibrium with their alkali metal are reacted together in such amounts and for such a period of time that a radiographically phase-pure product is formed. The present invention also provides ion conductor materials based on lithium or sodium compounds, which have the general formula: A.sub.3u+2v+w X.sub.u Y.sub.v Z.sub.w wherein A is lithium or sodium, X is nitrogen, phosphorus and/or arsenic, Y is nitrogen, sulphur, tellurium and/or selenium, Z is hydrogen and/or halogen and u, v and w each represent a number of from 0 to 1 inclusive, with the proviso that only one of u, v and w can assume the value of 0. Furthermore, the present invention provides galvanic cells comprising at least one of these ion conductor materials.