... Descriptors : , (*GAS LASERS, HALIDES), CHEMICAL PROPERTIES, HYDROCHLORIC ACID, GASES, CHEMICAL REACTIONS, HALOGENS ...

The coacervation of aqueous solutions of tatraalkylammonium halides in the presence of not of inorganic halides and acids has been studied, considering thermodynamic and spectroscopic aspects. The importance of dispersion forces as well as forces resultin...

... carboxylates, eighteen not previously reported, have been synthesized by the reaction between the diorganotin oxides and acid halides, and by ...

A method for synthesizing fluorocarbon halides by effecting a reaction at ambient temperatures between a fluorocarbon acid or its derivative and a halogen fluorosulfate. (Author)

Metallic nickel was investigated as a convenient coupling reagent for the synthesis of ketones by the reaction of benzylic, allylic, vinylic, and pentafluorophenyl halides with acid halides at 85/sup 0/C in glyme. A variety of benzylic ketones with functional groups including halogen, cyano, methoxycarbonyl, and hydroxycarbonyl groups ...

Twenty-eight inorganotin halide acetates, thioacetates, haloacetates and carboxylates, eighteen not previously reported, have been synthesized by the reaction between the diorganotin oxides and acid halides, and by transacyloxylation reactions between dio...

... AMINES, *HALIDES, *SOLVENT EXTRACTION, *INORGANIC ACIDS, USSR, TRANSLATIONS, NITRIC ACID, BROMIDES, HYDROCHLORIC ACID ...

Title: Vibrational assignments for solid malonic acid - Kinetics of thermal decarboxylation and reactions of malonic acid in alkali halides ...

... HALIDES, METHANES (1 C), PHENYL RADICALS, PHTHALIC ACIDS, POLYMERS, RESORCINOL, SPECTROGRAPHIC ANALYSIS ...

... CHEMISTRY), HALIDES, NITRAMINES, NITROGEN HETEROCYCLIC COMPOUNDS, SULFAMIC ACIDS, DIAZO COMPOUNDS, SULFAMATES. ...

The process and apparatus for removing metal halide gases from overspray generated during hot-end glass coating operations is disclosed. The excess metal halide gas is drawn into a recovery chamber in which it is decomposed to a metal oxide and a hydrogen halide gas by reaction with a warm water spray. The hydrogen ...

... of water and aqueous solutions (halides, hydroxyl ion, phosphoric acid and ... of ionic charge on the emission of phosphoric acid and phosphate ions. ...

... converted to derivatives such as acid fluorides, acids, etc., and in this ... HALIDES, ETHERS, FLUIDS, INORGANIC COMPOUNDS, BROMINE ...

... The acid chloride monomers are prepared by treating the corresponding carboxylic acids with thionyl chloride or thionyl bromide. ...

Well-defined aryl-Cu(III)-halide species undergo reductive elimination upon acid addition resulting in the formation of strong aryl-halide bonds. The computationally studied mechanism points towards ligand protonation as the rate-determining step, in agreement with previous experimental data. PMID:20886163

... 31) concluded that net charge transport of the halide anions Cl� or Br� occurs in the acid- ... most probably the chloride ions. The finding that halide ions are required for the generation of the ... ...

Protection of a carboxylic acid function as a bridged ortho ester derivative enables the use of strong basic conditions in the synthetic strategy. For example, a protected 3-halopropionic acid can behave like an alkyl halide because the protons, alpha to the halide function, are less acidic. ...

The gas stream obtained from the pyrolysis of solid organic wastes and containing halogens, particularly chlorine in the form of the corresponding hydrogen halide is processed to obtain a halide free pyrolytic oil. The gas stream after solids removal is contacted with a solid metal halide acceptor above the dew point of pyrolyzate to ...

... The use of Lewis acid salts such as anhydrous zinc halides or Bronsted acids such as 3,4-dichlorobenzenesulfonic acid as aromatization catalysts ...

...2010-07-01 false Substituted aliphatic acid halide (generic name). 721.530 Section 721.530 Protection of Environment... § 721.530 Substituted aliphatic acid halide (generic name). (a) Chemical substance and significant new uses...

[reaction--see text] Alcohols were efficiently converted to alkyl halides using 1-n-butyl-3-methylylimidazolium halides (ionic liquids) in the presence of Br�nsted acids at room temperature. The alkyl halide products were easily isolated from the reaction mixture via simple decantation or extraction, and the ...

Uranyl-salophen complexes endowed with aromatic side arms behave as very efficient ditopic receptors towards tetralkylammonium halides as a result of a combination of Lewis acid-base and cation-pi interactions. PMID:14587711

The infrared spectra of acyl halides possess a number of absorption bands in the low frequency region that are of analytical significance. Certain bending vibrations have been observed to be consistently located in the same position. The greater than expe...

Activation of ?-bond with organic Lewis acid and cationic surfactant mediated direct transfer of halides to alkyne and alkene are demonstrated to afford ?,?-dihaloketones and other valuable synthons with outstanding selectivities. PMID:21597639

Attempts were made to produce Lewis acid complexes of boron triiodide, tribromide and trichloride with the triiodides, tribromides and trichlorides of phosphorus, arsenic and antimony. The experimental method used involved the combining of the reagents in...

Starting from the results achieved in a previous work on the effects of Cl(-) ions on furfural formation in aqueous acid solution [Marcotullio, G. et al., Green Chem.2010, 12, 1739], the general effect of different halides is addressed. Experimental results show the halides to influence at least two distinct steps in the reaction ...

In a process for hydrocracking a heavy aromatic polynuclear carbonaceous feedstock containing reactive alkaline constituents to produce liquid hydrocarbon fuels boiling below about 475.degree. C. at atmospheric pressure by contacting the feedstock with hydrogen in the presence of a molten metal halide catalyst, thereafter separating a gaseous stream containing hydrogen, at ...

Sodium borohydride-transition metal systems produced reductions not achieved by sodium borohydride alone, such as dehalogenation of aryl halides. The reaction was used to introduce a deuterium atom into an aromatic system. Details are presented of the preparation of 4-deuterobenzoic acid, and a list is given of ten other aryl ...

The ore is dissolved in nitric acid containing an added excess of standard silver nitrate. The silver halides are filtered off, and the excess of silver nitrate is titrated using standard ammonium thiocyanate. The method is applicable to uranium ores which contain more than 250 ppm total halides (excluding fluoride). (auth)

... of organic compounds including chlorophenolics, nonyphenol adsorbable organic halides (AOX), resin and fatty acids, pesticides and polychlorinated ... measured on a bi-weekly basis. Adsorbable organi hali...

... Abstract : Brief summaries are given of work in the following areas: pyrolysis of t-butyl esters of sulfenic acids; syntheses of halides of sulfenyl esters ...

Oct 19, 2009 ... Water soluble flux is effective via a combination of weak organic acids and halides. Several ORxx fluxes examined to date have very low, ...

cement, glass, metals, halides, and sulfuric acid. Carbon from atmospheric carbon dioxide could serve clever Martians as a foundation for building organic ...

... alkyl ammonium salts of complex halo-acids. It is believed that many new compounds will be found from the reactions between nitrosyl halides or ...

... Acid/Base Reaction. Alkylation of a ring nitrogen atom of a neutral heterocycle, using an alkyl halide reactant, represents a ...

A catalyst comprising a uranium compound, an alkali metal ion, and a halide, is effective to convert conjugated dienes in carboxylic acid media to diacyloxy olefins.

Use environment likely to be acidic with the presence of oxygen and halides. Potential for order of magnitude increase in corrosion rate ...

Ion specific behavior of halides at surfaces of aqueous basic amino acids is unraveled by means of molecular dynamics simulations employing both nonpolarizable and polarizable force fields. Analysis in terms of density plots, cumulative sums, and residence times provides a clear, robust, and quantitative picture of specific ion effects. Small anions like ...

In a method of treating carbonate reservoirs with acid to increase their permeability a major portion of the acid necessary for the acidization of the formation is produced in situ. A single, substantially homogeneous, acid-producing treating liquid is injected into the formation. This treating liquid contains or ...

[reaction: see text] A new addition reaction of zinc-alkynylides to N-acyl and N-phosphinoyl iminiums is reported. These can be prepared in situ from imines with acid halides in the presence of a Zn-acetylide. The reaction is general with regard to imine, alkyne, and acid halides, allowing access to a large number ...

A wide range of polyfunctional aryl, heteroaryl, alkyl, and benzylic zinc reagents were coupled with unsaturated halides bearing an acidic NH or OH function, using Pd(OAc)(2) (1 mol %) and S-Phos (2 mol %) as catalyst without the need of protecting groups. PMID:18529011

A method for inhibiting the dissolution of silica from the matrix around a well during injection of steam into the matrix by adding to the feedwater used to generate the steam or the steam itself an inhibitor comprising an ammonium or substituted ammonium compound selected from the group consisting of ammonium halides, ammonium salts of inorganic acids, ...

A process for removing halide ions from a hydrocarbon feedstream containing halogenated hydrocarbons wherein the contaminated feedstock is contacted with a solution of a suitable oxidizing acid containing a lanthanide oxide, the acid being present in a concentration of at least about 50 weight percent for a time sufficient to remove ...

A method is described for preparing alkali metal boranes from boron halide or its addition compounds with the help of alkali metal hydride or alkali metal and hydrogen, especially in the presence of a tertiary amine. It is proposed to use alkyl boric acid diamides or dialkyl boric acid amides as boron amide catalyzer. (Gmelin ...

A closed-cycle process is described for the production of hydrogen from water by means of nuclear heat. The following steps are needed: dissolution of a metal, preferably Ag, in hydrohalogenic acids; transformation of the silver halide into silver and oxygen by means of alkaline hydroxides; splitting the alkaline halide into the basic ...

We have developed a highly effective copper-catalyzed decarboxylative coupling of alkynylcarboxylic acids with various aryl and alkyl halides at 2 mol% loading of copper. This method is simple, economical and practical for the synthesis of disubstituted alkyne compounds. PMID:21904730

The copper-catalyzed decarboxylative reactions of alkynyl carboxylic acids with aryl halides were performed under relatively mild reaction conditions. Benzofurans could be further prepared smoothly by a one-pot domino protocol on the basis of decarboxylative cross-coupling of 2-iodophenol. PMID:21049135

Lewis acid activation of allyl halides utilizing Bi(OTf)₃ resulted in cationic cyclization of alkenes with high efficiency. While other Lewis acids could catalyzed this process with highly substituted alkenes, bismuth salts demonstrated unique reactivity in come cases. This suggested that bismuth triflate ...

The corrosion behavior of titanium is determined by the presence of a protective oxide film on its surface. The halide ions Cl/sup -/ and Br/sup -/ in sulfuric acid in an atmosphere of air and of hydrogen have a double effect on the corrosion of titanium activating it in dilute acid solutions and retarding the corrosion in ...

A method for processing a silver halide black-and-white photographic light sensitive material comprising a transparent polyester support having thereon hydrophilic colloid layers including a silver halide emulsion layer, by the use of an automatic processor, the method comprising the steps of developing with a developing solution; fixing with a fixing ...

Experimental work continued with studies of reactions of triphenylsilyllithium with alkyl halides, aryl halides, metal hailides, organomercury compounds, group V-B halides, and carboxylic acid derivatives. Also studied were silanes containing the benzyl or allyl group and their reactions, and reacthons ...

Several ligands were designed to promote transition-metal-free cross-coupling reactions of aryl halides with benzene derivatives. Among the systems probed, quinoline-1-amino-2-carboxylic acid was found to serve as an excellent catalyst for cross-coupling between aryl halides and unactivated benzene. Reactions using this inexpensive ...

THE remarkable prevalence of re-arrangement in simple alkyl groups during the formation of alkyl halides, and the concomitant loss in optical purity have been loosely ascribed to the intermediate formation of a carbonium cation1. The conversion of an alkyl halide into the alcohol, ester, or ether must therefore be scrutinized for points of correlation. ...

An efficient three-step synthesis of 2-halo-3-aryl-4(3H)-quinazoliniminium halides from commercially available materials is described. Upon reaction with hydrogen halides, generated in situ from a Lewis acid (MX) and trace water, a variety of easily accessible heteroenyne-allenes underwent facile intramolecular cyclization to afford ...

A nontechnical book dealing with organic and petroleum chemistry is presented. The contents include: elements and compounds; hydrocarbons; equations; alcohols and phenols; aldehydes; ketones; carboxylic acids; esters; acid halides; amides, and anhydrides; petroleum; and a glossary of compounds. (JMT)

This article discusses the life and work of the Russian chemist, Aleksandr Ye. Arbuzov. Dr. Arbuzov is known for the rearrangement of the esters of phosphorous acid with alkyl halides to give esters of alkyl phosphonic acids.

Compounds: Heteroatoms: (iso)cyanide (iso)thiocyanate acyl_halide alcohol aldehyde amide amine anhydride azo carboxylic_acid dithoic_acid ester ethanethioato ether...

A chemical etch procedure using a solution of 91 parts of glacial acetic acid to 9 parts of concentrated hydrochloric acid was developed for polishing the potassium chloride. Thin film polymeric coatings were prepared by radio frequency glow discharge and...

A heat storage material to be used for air cooling systems is provided. This heat storage material comprises acetic acid or a mixture of acetic acid and one or more acetates and is further added with at least one anhydrous halide as nucleating agent to prevent supercooling.