Abstract: The present invention relates to new chiral salen catalysts and methods for the preparation of chiral compounds from racemic epoxides by using new catalyst. More particularly, the present invention is to provide novel chiral salen catalysts and their uses for producing chiral compounds having high optical purity to be used as raw materials for preparing chiral medicines or food additives in a large scale economically, wherein the chirl salen catalyst having a particular molecules structure can be reused continuously without any activating process of used catalysts and cause no or little racemization after the reaction is completed because it maintains its catalytic activity after the reaction process.

Abstract: A process for cyanating an aldehyde is provided.

Abstract: The present invention relates to a method and catalysts for the stereoselective addition of a nucleophile to a reactive &pgr;-bond of a substrate. The chiral, non-racemic catalysts of the present invention constitute the first examples of catalysts for nucleophilic additions that comprise a main-group metal and a tri- or tetra-dentate ligand.

Abstract: The present invention provides a catalyst comprising a diimine complex coordinated a transition metal. The complex includes a Group 3 to 10 transition or lanthanide metal and one or more anionic or neutral ligands in an amount that satisfies the valency of the metal such that the complex has a net zero charge. The present invention also discloses a method for coupling olefins utilizing the catalyst of the present invention.

Abstract: Epoxides, aziridines, thiiranes, oxetanes, lactones, lactams and analogous compounds are reacted with carbon monoxide in the presence of a catalytically effective amount of catalyst having the general formula [Lewis acid]z+{[QM(CO)x]w−}y where Q is any ligand and need not be present, M is a transition metal selected from the group consisting of Groups 4, 5, 6, 7, 8, 9 and 10 of the periodic table of elements, z is the valence of the Lewis acid and ranges from 1 to 6, w is the charge of the metal carbonyl and ranges from 1 to 4 and y is a number such that w times y equals z, and x is a number such as to provide a stable anionic metal carbonyl for {[QM(CO)x]w−}y and ranges from 1 to 9 and typically from 1 to 4.

Abstract: A method for producing an optically active lactone compound by Baeyer-Villiger oxidation of a cyclic ketone compound with at least one kind of oxidants selected from the group consisting of hydrogen peroxide and urine-hydrogen peroxide adduct (UHP) using a cobalt(salen) complex having a cis-&bgr; structure expressed by the following formula (I) or (II) as a catalyst.

Abstract: A catalyst for olefin polymerization having the following structural formula (I): 1

Abstract: Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.

Abstract: Ferrocene anchored chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution and [m+n] cycloaddition. The new ligands are effective for asymmetric Pd-catalyzed allylic alkylation reactions and Ag-catalyzed [3+2] cyclization of azomethine ylides.

Abstract: A series of emitting materials used for organic EL based on tridentate ligands are characterized as Formula 1, Formula 2 and Formula 3, where: the group O-I-N is a bidentate ligand such as 8-hydroxyquinoline and 2-(o-hydroxyphenyl)-benzoxazole, II, III are unsubstituted or substituted aryl groups. The substituted groups can have 1-8 carbon atoms, halogen, cyano, amino, amido, sulfonyl, carbonyl, aryl, or heteroalkyl groups. The ligand including II and III is a tridentate ligand with three chelate atoms: two oxygen atoms and one nitrogen atom. The central metal atoms can be trivalent or tetravalent atoms such as Al, In, Ga, Tl, and Sn. These materials can be used as emitting materials or electronic transport materials in organic EL devices.

Abstract: The present invention includes array of new chiral ligands that are optically active or racemic. These ligands are bidentate, tridentate, tetradentate or pentadentate ligands which include P-P, P-N, N-N, mixed P-N, Schiff base or carbene sites. The present invention further includes a catalyst prepared by a process, which includes contacting a transition metal salt, or a complex thereof, and a ligand according to the present invention. The present invention still further includes a process for preparation of an asymmetric compound. In this process, a substrate capable of forming an asymmetric product by an asymmetric reaction and a catalyst according to the present invention are contacted to produce an asymmetric product. Transition metal complexes with these ligands are effective catalysts for asymmetric reactions.

Abstract: The present invention generally relates to ruthenium and osmium carbene catalysts for use in olefin metathesis reactions. More particularly, the present invention relates to Schiff base derivatives of ruthenium and osmium carbene catalysts and methods for making the same. The inventive catalysts are generally prepared by the treatment of unmodified catalysts with the salts of the desired Schiff base ligands, in which an anionic and a neutral electron donating ligands of the unmodified catalysts are simultaneously replaced. The Schiff base derivatives of the ruthenium and osmium carbene catalysts show unexpectedly improved thermal stability while maintaining high metathesis activity, even in polar protic solvents. Although the inventive catalysts may be used in all metathesis reactions, use of these catalysts for ring-closing metathesis ("RCM") reactions is particularly preferred.

Abstract: A method for removing unbound labeling reagent from a composition comprising bound and unbound labeling reagents in which a chelator-matrix conjugate capable of binding unbound labeling reagent is contacted with a biomolecule labeling reaction mixture, by which the unbound labeling reagent is scavenged by the chelator-matrix conjugate, and then the labeled biomolecule essentially free of unbound labeling reagent is removed. Also included is a novel chelator IDAC-2, which may be used for labeling biomolecules and for scavenging in the chelator-matrix conjugate.

Abstract: A process is described for inhibiting the re-absorption of migrating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150, preferably from 1.5 to 75, especially from 7.5 to 40 mg, per liter of wash liquor, of one or more compounds having the formula (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13) or (14) as defined in the specification. The compounds of formula (1), (2), (3), (4), (5), (6), (8), (9) (10), (11), (12), (13) or (14) are new compounds. The compounds used do not exhaust at all on to cotton, polyamide or polyester fibers, so that the compounds cannot lead to fiber discoloration problems.

Abstract: The invention relates to divalent immonium salts which are near infrared dyes of the formula (I).(R.sub.2 NAr).sub.2 --N.sup.+ .dbd.Ar'.dbd.N.sup.+ R.sub.2 +2X.sup.-(I)wherein:R.dbd.C.sub.1 to C.sub.6 alkyl; Ar=divalent phenyl which may or may not be ring substituted with one or more alkyl, alkoxy, halogen, nitro, cyano or carboalkoxy groups; Ar'=quinoidal phenyl which may or may not be ring substituted with one or more alkyl, alkoxy, halogen, nitro, cyano or carboalkoxy groups; and X=an anion of a strong acid. A double charged dye cation having an SbF.sub.6 anion associated with the dye can act both a near IR dye and an epoxy curative.

Abstract: The invention relates to catalysts for the synthesis of .beta.-hydroxy carbonyl compounds, and in particular to enantioselective catalysts.

Abstract: The conjugate addition of hydrocarbon equivalents to alpha,beta-unsaturated carbonyl compounds using a series of novel catalysts is described. The catalysts comprise copper(I) complexes with ligand systems comprising either tropocoronand macrocycles or N,N'-dialkylsubstituted aminotroponeimines.

Abstract: Fluorinated .beta.-ketoimine ligands and highly volatile .beta.-ketoiminato metal complexes of the ligands are synthesized by silylating a fluorinated .beta.-diketone to form a silylenolether, and subsequently reacting the silylenolether with a primary amine to form the desired ligand having the structural formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently linear or branched perfluorinated, C.sub.1 -C.sub.8 alkyl groups and R.sub.3 is a phenyl or C.sub.1 -C.sub.8 alkyl, hydroxyalkyl, or ether group, all of which can be partially or fully fluorinated. The corresponding metal complex is formed by treating the ligand with a metal halide.

Abstract: The conjugate addition of Grignard reagents to alpha, beta-unsaturated carbonyl compounds using a series of novel catalysts is described. The catalysts comprise copper(I) complexes with ligand systems comprising either tropocoronand macrocycles or N,N'-dialkylsubstituted aminotroponeimines.

Abstract: Pigment of the general formula:f.Het (I)where F is the cation of a cationic dye which has an absorption maximum at >700 nm and may or may not contain anionic groups and Het is an anion of a heteropolyacid based on tungsten, molybdenum, vanadium or a mixture of these with phosphorus, silicon, cobalt, aluminum, manganese, chromium, nickel or a mixture of these or a copper (I)-hexacyanoferrate(II) anion, are superior to the known IR dyes in terms of thermal stability and photostability, and give optical recording media having superior properties, such as a high signal/noise ratio.

Abstract: The invention relates to novel 2-acyl-1,3-cyclohexanediones and the oxime ethers thereof with herbicidal and plant growth regulating properties.The novel 2-acyl-1,3-cyclohexanediones and the oxime ethers thereof are of the formula I ##STR1## wherein A is a 2- or 7-membered alkylene bridge, or a 3- to 7-membered alkenylene bridge which may be mono- or polyunsaturated,n is 0, 1 or 2,R.sub.1 is C.sub.1 -C.sub.4 alkyl or benzyl,R.sub.2 is C.sub.1 -C.sub.6 alkyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio; or is C.sub.3 -C.sub.6 cycloalkyl; or phenyl, benzyl or phenylethyl, the phenyl ring of each of which may be substituted by ahlogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, cyano or nitro,X is oxygen or a radical --NOR.sub.3, andR.sub.3 is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 haloalkenyl or C.sub.3 -C.

Abstract: Metal complexes of hydroxyl- and/or thiol-containing Mannich are prepared by reacting a transition metal-containing agent with an aromatic Mannich. The Mannich is prepared from a substituted hydroxyl- and/or thiol-containing aromatic, an aldehyde or ketone, and a hydroxyl- and/or thiol-containing amine compound. A Schiff base is then reacted therewith. The products are useful in reducing soot ignition temperatures in diesel particulate traps.

Abstract: An infrared absorbent comprising .alpha.-diimine metal complex is disclosed. With the use of the infrared absorbent, there is provided an infrared absorbing material capable of absorbing a near-infrared light having a wavelength of 700-1500 nm and a far-infrared light. The infrared absorbent has a good fastness to heat and light. The infrared absorbing material is suitable for an optical filter and optical information recording medium.

Abstract: Complexes of the formula ##STR1## wherein each R.sub.1 is independently a monocyclic or fused ring aromatic or heteroaromatic group free of water-solubilizing groups,each R.sub.2 is independently is phenyl or methyl, andMe is Ni, Cu, Co or Zn, are useful as pigments for, for example, the mass pigmenting of synthetic plastics and resins, surface coatings and inks, pigment printing, textile coating and pigmenting paper in the mass.

Abstract: There is described a photographic system wherein development of an exposed photosensitive element with an aqueous alkaline photographic developing composition is effected in the presence of a compound which releases a quaternary in alkaline environment. Photographic products and processes utilizing such compounds are also disclosed.

Abstract: A process for the photochemical stabilization of undyed and dyed polyamide or polyurethane fibre material that is characterized in that the fibre material is treated with a water soluble, organic copper, manganese or nickel complex that displays an affinity for the fibres. The polyamide or polyurethane fibre material, e.g., textile, that has been so treated retains its stretch characteristics and elasticity even after prolonged periods of illumination. In addition, in the case of dyed material, treatment with the metal complex results in a marked improvement in light-fastness.