Abstract: This invention provides aromatic diimines which have imino hydrocarbylidene groups with at least two carbon atoms, and aromatic secondary diamines which have amino hydrocarbyl groups with at least two carbon atoms. Both the aromatic diimines and the aromatic secondary diamines either are in the form of one phenyl ring, or are in the form of two phenyl rings connected by an alkylene bridge; each position ortho to an imino group or an amino group bears a hydrocarbyl group. When in the form of one phenyl ring, there are two imino groups on the ring or two amino groups on the ring; the imino groups or amino groups are meta or para relative to each other. When in the form of two phenyl rings connected by an alkylene bridge, there is either one imino group or one amino group on each phenyl ring. Also provided are processes for forming diimines and secondary diamines.

Abstract: Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.

Abstract: Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.

Abstract: Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.

Abstract: Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.

Abstract: Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.

Abstract: Aromatic substrates are Ar-brominated in high yield and selectivity by reacting the substrate with a brominating agent in the presence of at least about 0.19 gram per mmol of substrate of a zeolite catalyst which has an absorbed water content of no greater than about 7.5 weight percent.

Abstract: Aromatic substrates such as fluorobenzene can be selectively brominated in high yield and conversion in short reaction periods by reacting the substrate with a brominating agent in a liquid reaction medium and in the presence of a catalyst composition formed by including in the medium a combination of (i) a shape selective HY or HM or zeolite catalyst, and (ii) at least one Lewis acid in a ratio of from 0.005 to 0.5 part by weight of (ii) per part by weight of (i). The bromination is performed at one or more temperatures in the range of 30 to 70° C., and the amount of the zeolite is no more than about 10 grams per mole of aromatic substrate.

Abstract: A mixture of water and a glycol, such as ethylene glycol, is employed as the solvent for the reaction between 1,6-dibromo-2-naphthol and an alkali metal sulfite in the preparation of 6-bromo-2-naphthol and its derivatives to effect a substantial reduction in reaction time. The glycol/water mol ratio is ordinarily in the range of 0.1-0.5/1, preferably 0.3/0.5/1.

Abstract: In producing nabumetone or precursor thereof, use is made of 2-bromo-6-methoxynaphthalene formed by (a) methylating 6-bromo-2-naphthol with methyl bromide or methyl chloride, in a halogen-free liquid solvent comprising at least about 40% by weight of one or more compounds of the formula RZ where R is a hydrogen atom or an alkyl group, and Z is a hydroxyl group or a cyanide group with the proviso that if Z is a cyanide group, R is an alkyl group, and in the presence of at least one strong base; and (b) recovering and purifying 2-bromo-6-methoxynaphthalene so formed.

Abstract: Bromine is generated in situ in a mixture formed by mixing together 2-methoxynaphthalene, hydrogen bromide, at least one peroxidic compound and a chemically indifferent organic liquid solvent or diluent under conditions effective to produce 1,6-dibromo-2-methoxynaphthalene. Optionally, but preferably, water is also included in the mixture. Regioselective hydrodebromination of 1,6-dibromo-2-methoxynaphthalene with hydrogen and tungsten carbide enables production of 2-bromo-6-methoxynaphthalene.

Abstract: A bromination process for organic compounds employs stabilized bromine chloride solutions as the brominating agent. Activated aromatic compounds such as anisole can be selectively monobrominated in the para-position in high purity and yield.

Abstract: In producing (.+-.)-2-(6-methoxy-2-naphthyl)propionic acid or precursor thereof from 2-bromo-6-methoxynaphthalene, use is made of 2-bromo-6-methoxynaphthalene formed by (a) methylating 6-bromo-2-naphthol with methyl chloride in a solvent comprising one or more compounds, RZ, where R is a hydrogen atom or an alkyl group, and Z is --OH or --CN provided that if Z is --CN, R is alkyl, and in the presence of a strong base; and (b) recovering and purifying 2-bromo-6-methoxynaphthalene so formed.

Abstract: In producing nabumetone or precursor thereof, use is made of 2-bromo-6-methoxynaphthalene formed by (a) methylating 6-bromo-2-naphthol with methyl bromide or methyl chloride, in a halogen-free liquid solvent comprising at least about 40% by weight of one or more compounds of the formula RZ where R is a hydrogen atom or an alkyl group, and Z is a hydroxyl group or a cyanide group with the proviso that if Z is a cyanide group, R is an alkyl group, and in the presence of at least one strong base; and (b) recovering and purifying 2-bromo-6-methoxynaphthalene so formed.

Abstract: Lubricants having a viscosity suitable for a refrigeration lubricant as well as good miscibility with common refrigerants (including R-134a) comprise at least one oil corresponding to the formula Z--C(E)(E').sub.p --Q.sub.s in which Z is alkyl, cycloalkyl, or --(CTT'--CT"G).sub.w --CTT'--CHT"G; Q is --(CTT'--CT"G).sub.t --CTT'--CHT"G; T, T', and T" are independently selected from hydrogen G', and organic groups containing up to 20 carbons; E, E', G, and G' are independently selected from --COOR, --C(O)R', and --CN electron withdrawing groups wherein R and R' represent hydrocarbyls containing 1-30 carbons, with the proviso that at least about 50% of the electron withdrawing groups are --COOR; p is zero or one; s is respectively two or one; and each of t and w represents zero or a positive integer.

Abstract: Hydrogenated oligomers of C.sub.4 -C.sub.20 .alpha.-olefins are used in minor amounts to improve the lubricity of ester oils corresponding to the formula ROOC--CH.sub.2 CH.sub.2 --(ROOC--CHCH.sub.2).sub.m --C(COOR).sub.2 --(CH.sub.2 CHCOOR).sub.n --CH.sub.2 CH.sub.2 COOR in which the R's represent alkyl groups of 1-30 carbons, each of m and n is zero or a positive integer, and the sum of m and n in the molecules is an average of 0-30. The improved ester oils are particularly valuable for use as lubricants in refrigeration compositions containing fluorohydrocarbon refrigerants.

Abstract: Compound mixtures varying from liquids to solids can be prepared via a Michael reaction so that (1) their molecules correspond to the formula Z--C(E)E').sub.p --Q.sub.s wherein Z is alkyl, cycloalkyl, or --(CTT'--CT"G).sub.w --CTT'--CHT"G; Q is --(CTT'--CT"G).sub.t --CTT'--CHT"G; T, T', and T" are independently selected from hydrogen, G', and hydrocarbyl or predominantly hydrocarbyl organic groups containing up to 10 carbons, with the proviso that at least one of T, T', and T" must be hydrogen; E, E', G, and G' are independently selected from --COOR, --C(O)R', and --CN electron withdrawing groups in which R and R' represent alkyl or cycloalkyl groups of up to 10 carbons; p is zero or one; s is respectively two or one; and each of t and w represents zero or a positive integer and (2) at least 25% of the molecules contain at least three G groups.

Abstract: An ester oil which lacks complete miscibility with fluorohydrocarbons has its miscibility with fluorohydrocarbons refrigerants improved by blending it with a second ester oil composed of molecules corresponding to the formula ROOC--CH.sub.2 CH.sub.2 -[(ROOC)CHCH.sub.2 ].sub.m --C(COOR).sub.2 --[CH.sub.2 CH(COOR)].sub.n --CH.sub.2 CH.sub.2 COOR wherein the R's represent alkyl groups of 1-30 carbons, at least 10% of which are alkyl groups of 1-4 carbons; and each of m and n represents zero or a positive integer such that the sum of m and n in a molecule is 0-30.

Abstract: The reaction between a Michael donor corresponding to the formula Z--CH(E)(E') (e.g., a dialkyl malonate) and a Michael acceptor corresponding to the formula CTT'.dbd.CT"G (e.g., an alkyl acrylate or alkyl acrylate dimer) in the presence of a solid inorganic base catalyst is expedited by simultaneously feeding the reactants through a column of the solid inorganic base catalyst at a temperature of about 25.degree.-120.degree. C. to form an effluent containing a product corresponding to the formula Z'--C(E)(E").sub.p --Q.sub.

Abstract: Compounds varying from liquids to solids can be prepared via a Michael reaction so that they correspond to the formula DA.sub.m in which D is a deprotonated residue of a Michael donor, A is a monovalent group composed of n Michael acceptor moieties, m is an integer of at least one corresponding to the valence of D, and n is an integer of at least one such that the sum of n moieties in the m monovalent A groups is at least three. Among the more preferred products are the ester oils in which the esterifying groups contain 1-30 carbons and which have viscosities such as to make them suitable for use as lubricants.