Abstract:
Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain α-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain α,ω-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an α,ω-hydroxy acid or α,ω-hydroxy ester, which may be (trans)esterified with a polyol to form an α,ωpolyester polyol. Alternatively, the reduced chain unsaturated acid or ester may be hydroformylated with reductive amination to produce an α,ω-amino acid or α,ω-amino ester, which may be (trans)esterified to form an α,ω-polyester polyamine.
Abstract:
The present invention provides a method for producing a fullerene derivative comprising reacting: a serene; an organometallic reagent (A) comprising B, Al, Zn, Sn, Pb, Te, Ti, Mn, Zr or Sm; and a copper compound (B).
Abstract:
A process for preparing a compound of formula (I) comprising reacting a compound of formula (II) with a fluorinated boron species of formula (III) in the presence of: an alcohol; a rhodium (I) pre-catalyst species; a suitable ligand that binds to the rhodium (I) pre-catalyst species to form a catalyst complex; a base; and, a suitable solvent; the process being carried out at a temperature in the range 40 to 110° C. The compounds of formula (I) are useful in the preparation of pharmaceutically active compounds.
Abstract:
The invention provides a cyclobutanetetracarboxylate compound of general formula (I) and a preparation method thereof: in which R and R1 are as defined in the specification.
Abstract:
Disclosed herein is a process for preparing a polymer comprising structural units derived from polycyclic dihydroxy compound having Formula (I), wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer having a value 0 to 4. The process comprises subjecting a polycyclic dihydroxy compound of Formula (I) to polymerization.
Abstract:
Optically active bisoxazoline compounds represented by the general formula (1), a process for producing the compounds, and a process for producing cyclopropanecarboxylic esters by using the same: wherein R1 and R2 are the same and each represents C1-6 alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted phenyl or R1 and R2 are bonded each other together with the carbon atom of oxazoline ring to which they are bonded to form a ring; R3 is substituted or unsubstituted naphthyl; R4 and R5 are the same and each represent hydrogen or C1-6 alkyl, or R4 and R5 are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and * represents an asymmetric center.
Abstract translation:由通式(1)表示的光学活性的双恶唑啉化合物,该化合物的制备方法以及使用该化合物制备环丙烷羧酸酯的方法:其中R 1和R 2, SUP>相同,各自表示C 1-6烷基,取代或未取代的芳烷基或取代或未取代的苯基或R 1和R 2 O 2 >与它们所键合的恶唑啉环的碳原子一起形成环; R 3是取代或未取代的萘基; R 4和R 5是相同的,并且各自表示氢或C 1-6烷基,或R 4, R 5和它们所连接的碳原子一起形成具有3〜6个碳原子的环烷基环; *表示非对称中心。
Abstract:
A continuous hydroformylation process for forming an aldehyde comprising 1) reacting an olefinically unsaturated compound containing from 2 to 30 carbon atoms with carbon monoxide and hydrogen in the presence of a rhodium-bisphosphite ligand complex catalyst and 2) distilling a mixture comprising at least a part of the catalyst of 1), wherein the distilling is performed in the substantial absence of molecular hydrogen.
Abstract:
A novel organophosphorus composition and synthesis thereof, the composition being characterized by one phosphite moiety, one phosoxophite moiety, and a plurality of sterically bulky substituents. The novel composition finds utility as a ligand in Group VIII transition metal phosoxophite complex catalysts and complex catalyst precursors that are used in carbonylation processes, preferably, hydroformylation processes. Additionally, there is disclosed a novel method of preparing a phosphoromonochloridite composition that finds utility as a precursor to the novel phosoxophite composition.
Abstract:
A microemulsion containing water, a densified fluid, a surfactant, and an organometallic catalyst is used to catalyze chemical reactions. The organometallic catalyst preferably has substantial solubility in the water phase of the microemulsion. Separation of reaction products from the microemulsion is facilitated by removal of the densified fluid.
Abstract:
One aspect of the present invention relates to methods for the transition-metal-catalyzed asymmetric 1,4-addition of a nucleophile, e.g., hydride, to cyclic and acyclic enoates and enones. In certain embodiments of the methods of the present invention, the transition metal catalyst consists essentially of copper and an asymmetric bidentate bisphosphine ligand.