Abstract: The present invention provides a process for producing nitroalkanes by dehydroxylation of nitroalcohols. This provides an alternate reaction route for making nitroalkanes, such as 2-nitropropane and its derivatives.

Abstract: The present invention discloses processes for producing ?-nitrocarbonyl and ?-dicarbonyl compounds, which can be precursors in the synthesis of pyrrole compounds. A process for producing pyrroles such as 2,5-dimethylpyrrole, and structurally similar pyrrole compounds, is also disclosed.

Abstract: The present invention discloses processes for producing ?-nitrocarbonyl and ?-dicarbonyl compounds, which can be precursors in the synthesis of pyrrole compounds. A process for producing pyrroles such as 2,5-dimethylpyrrole, and structurally similar pyrrole compounds, is also disclosed.

Abstract: The present invention discloses processes for producing ?-nitrocarbonyl and ?-dicarbonyl compounds, which can be precursors in the synthesis of pyrrole compounds. A process for producing pyrroles such as 2,5-dimethylpyrrole, and structurally similar pyrrole compounds, is also disclosed.

Abstract: This application discloses provides a process for the introduction of nitro-group functionality into a compound which contains also a site of unsaturation and/or oxygen functionality by direct (one step) oxidation of an oxime functional group mediated by a molybdenum VI/VII peroxo complex, the process comprising: (a) providing a substrate of Formula I containing an oxime functional group; wherein R1 and R2 are selected independently from linear, branched or cyclic alkyl and linear, branched or cyclic alkenyl groups, optionally substituted, with the proviso that at least one of R1 or R2 contains a carbon/carbon double bond; and (b) contacting said substrate of Formula I with a molybdenum oxidation complex, thereby oxidizing said oxime functional group to a nitro functional group to yield the structure of Formula III. Where R1 and R2 are as defined above.

Abstract: A Compound corresponding to formula (I): wherein X is a group selected from the group consisting of —CHO, —CN, —CH?NOH, and —CH2OH, and wherein the C?C double bond assumes a Z or E configuration.

Abstract: A catalyst activator particularly adapted for use in the activation of metal complexes of metals of Group 3-10 for polymerization of ethylenically unsaturated polymerizable monomers, especially olefins, comprising two Group 13 metal or metalloid atoms and a ligand structure including at least one bridging group connecting ligands on the two Group 13 metal or metalloid atoms.

Abstract: Reaction products of polyisobutenes having an average degree of polymerization P of from 10 to 100 and a content E of from 60 to 90% of double bonds which can react with maleic anhydride, E=100% corresponding to the theoretical value for the case where each molecule of the polyisobutene has such a reactive double bond, with oxides of nitrogen or mixtures of oxides of nitrogen and oxygen, are suitable as additives for fuels, in particular for gasoline engines, and for lubricants.

Abstract: The invention features a compound of the formulaW-Y-Q-Z or W-Y-ZwhereinW is a farnesyl group, a geranylgeranyl group, a substituted farnesyl group or a substituted geranylgeranyl group; ##STR1## wherein n=1, 2, 3, 4, 5, or 6; each of T.sub.1' . . . T.sub.n' and T.sub.1" . . . T.sub.n" is independently: Fl, Br, --NHCOCH.sub.3, --NH.sub.2, a peptide, an alkane group, an alkene group, an polyethyleneglycol group, a saturated fatty acid, an unsaturated fatty acid, a monosaccharide, or a disaccharide; andZ is --COOH or salts or esters thereof, --CONH.sub.2, --NO.sub.2, --PO.sub.3 or salts or esters thereof, --C N, or --SO.sub.3 or salts or esters thereof, provided that when W is farnesyl, Y is --S--, n=2, and either T.sub.2' or T.sub.2" is --NHCOCH.sub.3, then Z is not --COOH.The compounds of the invention are capable of interfering with enzymatic methylation of a peptide having the carboxyl-terminal motif --CAAX wherein C=cysteine, A=aliphatic amino acid, and X=any amino acid.

Abstract: Contrast enhancement compositions are provided which can be used to make contrast enhancement layer photoresist composites. The composites can be used to make patterned photoresists under mid-UV light and utilize photobleachable alkylnitrones.

Abstract: A method of preparing a monohalogenated nitroalkane which comprises reacting equal molar quantities of an alkali metal hydroxide and a nitroalkane in a suitable medium to form a nitronate salt therein, promptly mixing the medium containing the nitronate salt with an equal molar quantity of a halogen to form a monohalogenated nitroalkane in the medium, promptly adding a material to the medium containing the monohalogenated nitroalkane to terminate any further halogenation therein, and recovering the monohalogenated nitroalkane from the medium.

Abstract: Contrast enhancement compositions are provided which can be used to make contrast enhancement layer photoresist composites. The composites can be used to make patterned photoresists under mid-UV light and utilize photobleachable alkylnitrones.

Abstract: A process of forming N,N-dialkylhydroxylamines (a class of compounds useful as oxygen scavengers in boiler water feed) by contacting an N-alkylhydroxylamine with an alkyl carbonyl compound to form a nitrone in situ or, alternatively, using previously formed alkylnitrone which is subjected to H.sub.2 and a hydrogenation catalyst.

Abstract: A process for the preparation of nitroolefins which comprises heating a solution of a nitroalcohol of the formula: ##STR1## to at least 125.degree. C. to give a corresponding nitroolefin which is contacted in situ with nucleophilic addition reagent.

Abstract: A process to decolorize and stabilize nitro compounds by contacting the nitro compound with an alkaline earth metal hypochlorite particulate material.

Abstract: Alkylidene compounds and arylidene compounds are prepared by reacting the corresponding CH-acidic compounds with carbonyl compounds in the presence of a catalyst comprising a metal compound of a metal of Groups IIA, IIIA, IVA, IB, IIB, VIB, VIIB, or VIIIB of the periodic table of elements. The rate of reaction is increased by adding 1 to 40% water referred to the weight of catalyst used.

Abstract: A method for preparing nitrones from mixtures of arylhydroxylamines and alkylhydroxylamines containing zinc oxide solids is provided which does not require filtration of the mixture prior to reaction. This is accomplished by introducing a dilute acid solution to the mixture so as to solubilize the zinc oxide powder. The hydroxylamines within solution may be reacted with an aldehyde to produce a nitrone where the dilute acid dissolves the zinc oxide.

Abstract: A method for converting ether groups such as alkyl or aryl ether groups including hydroquinone ether groups to hydroxyl groups and ester groups such as alkyl or aryl ester groups to carboxylic acid groups which comprises reacting a compound including at least one ether and/or ester group with a 2-halo-1,3,2-benzodioxaborole to form an intermediate and hydrolyzing the intermediate such as by quenching it into water to form the desired final product.

Abstract: Carbon acids are allylated by contacting with an allyl carbonate in the presence of an iron, cobalt, nickel, ruthenium, rhodium, osmium, iridium or platinum catalyst.

Abstract: A reactor for nitration of saturated hydrocarbons having less than five con atoms, alone or in admixture, in the gaseous phase under pressure is made up of a reaction enclosure, in which a tube or pipe bank is in contact with a heated fluid of high heat-exchange capacity. The inside perimeter of the tubes does not exceed 800 mm, and if circular not in excess of 250 mm, and the ratio of the surface of the tube bank, in contact with the reaction medium, to the volume of the reaction enclosure is 1:1 to 3:1.The reactor apparatus further includes a mechanical means to uniformly distribute the delivery of reaction medium gases to the various tubes of the bank so that the load difference between the most loaded tube and that of the least loaded tube is equal to 10% at the most.The reactor also includes a tube bank injector which feeds the tube bank to assure homogeneous mixing of all the reaction fluids in the tube bank.

Abstract: Nitration of organic compounds and organic nitrogen compounds produced.Organic nitrogen compounds are formed in the vapor phase by organic radical formation by reaction of an organic compound with hydroxyl radicals derived from the reaction between hydrogen peroxide and nitrogen dioxide and the nitration of the organic radicals, suitably with nitrogen dioxide. The process may be conducted as a single stage process using an excess of nitrogen dioxide over that required for hydroxyl radical formation. The production of hydroxyl radicals is maximized by the use of a catalytic solid surface such as a solid acid or an acidic oxide or mixed oxide. The product may be a mixture of some or all of the nitrite, nitrate and nitro-derivative which may be used as such, e.g. as a fuel additive, as a source of the individual compounds or as a feedstock for a further synthesis.

Abstract: Organic nitrogen compounds are formed in the vapor phase by organic radical formation by reaction of an organic compound, suitably an alkane, with hydroxyl radicals derived from the reaction between hydrogen peroxide and nitrogen dioxide and the nitration of the organic radicals, suitably with nitrogen dioxide. The process is conducted using a molecular oxygen additive which directs the reaction towards the formation of the nitrate corresponding to the organic compound which may predominate in the organic reaction products.

Abstract: A process for the preparation of nitro-olefins comprising reacting a compound of the formula ##STR1## where R and R.sup.1 can be hydrogen, alkyl of 1-20 carbon atoms or phenyl, with an aldehyde acceptor selected from the group consisting of alkylene polyols or aromatic polyols, in the presence of an alkaline catalyst or a Lewis acid catalyst.

Abstract: A process for the preparation of 1-nitroalkene which comprises the reaction of a 1-alkene with dinitrogen tetroxide in the presence of oxygen and an ether solvent to form an alkene-dinitrogen tetroxide adduct and subsequent reaction of the resulting adduct with sodium fluoride in the presence of an inert gas.

Abstract: Carbon acids are allylated by contacting with an allyl carbonate in the presence of a palladium catalyst.

Abstract: A process for the telomerization of dienes with a telomerizing compound containing a mobile hydrogen atom is disclosed wherein the reaction between the diene and the telomerizing agent is effected in the presence of a catalytic system comprising a water-soluble sulfonated triaryl phosphine compound, preferably a water-soluble salt of a mono-, di-, or trisulfonated triphenyl phosphine and a transition metal compound, preferably palladium or a palladium-containing compound. Water is added either before or after the reaction is completed and the reaction products can easily be separated from the aqueous catalyst solution.