A method of isolating and purifying 1,2,5,6 hexanetetrol (HTO) from a reaction mixture containing HTO and other byproducts of a hydrogenation reaction of a sugar alcohol and/or a mono- or di-dehydrative product of a sugar alcohol is described. The method involves contacting the mixture comprising HTO and other C1-C6 alcohols and polyols with a resin material adapted for chromatography under conditions where HTO preferentially associates with the resin relative to other components in the mixture, and eluting HTO from said resin with a solvent.

The disclosure is directed to: (a) phosphacycle ligands; (b) catalyst compositions comprising phosphacycle ligands; and (c) methods of using such phosphacycle ligands and catalyst compositions in bond forming reactions.

Spirocyclic compounds, including chiral spiro diamine, chiral spiro amino naphthol, chiral spiro bis(indole), chiral spiro diaryl diol, chiral spiro diaryl diamine, chiral spiro amino naphthol, chiral spiro diaryl diindole, and chiral spiro phospholane useful as chiral ligands and chiral organocatalysts and methods of preparation and methods of use thereof. Owing to the molecular shape and three-dimensional orientation, the chiral diamine and chiral amino naphthol molecules provide a skeleton for use as ligands and organocatalysts.

A method of isolating and purifying 1,2,5,6 hexanetetrol (HTO) from a reaction mixture containing HTO and other byproducts of a hydrogenation reaction of a sugar alcohol and/or a mono- or di-dehydrative product of a sugar alcohol is described. The method involves contacting the mixture comprising HTO and other C1-C6 alcohols and polyols with a resin material adapted for chromatography under conditions where HTO preferentially associates with the resin relative to other components in the mixture, and eluting HTO from said resin with a solvent.

Disclosed herein are methods of synthesizing shorter chain polyols. Methods of hydrolyzing polysaccharides are further disclosed. The present invention is also directed towards methods of selectively synthesizing sorbitol.

A process for preparing cyclic dehydration products from sugar alcohols is described. The process involve using a mixed-acid catalyst reaction mixture containing a reducing acid, having a pKa of about 1.0-1.5, and at least a strong Brnsted acid or a Lewis acid, having a pKa0, or both acids in a solution to dehydrate and ring close said sugar alcohol. Synergistically, the mixed-acid catalysis can produce greater amounts of the desired product at similar levels of compositional accountability than either of the component acid catalysts acting alone.

The present patent application relates to new palladium complexes, to processes for their preparation, and to their use.

A method for producing a catalyst for vinyl acetate production comprising a carrier, copper, palladium, gold, and an acetic acid salt, the method comprising, in the following order, step 1, in which an alkali solution is infiltrated into the carrier, step 2, in which the carrier is brought into contact and impregnated with a solution in which a copper-containing compound, a palladium-containing compound, and a gold-containing compound are contained in excess with respect to desired deposition amounts of the catalyst components, step 3, in which, after the catalyst components have been deposited in the desired deposition amounts, the carrier is separated from the solution, step 4, in which the carrier is brought into contact with water or an aqueous solution each having a pH of 7.0-11.5, step 5, in which a reduction treatment is conducted, and step 6, in which the acetic acid salt is deposited on the carrier.

A method of carbon dioxide fixation includes contacting a covalent organic framework material with a co-catalyst and an epoxide in the presence of carbon dioxide to form a cyclic carbonate. The covalent organic framework material includes reacted units of a 2,4,6-trimethyl-1,3,5-triazine, reacted units of a 4,4-biphenyldicarbaldehyde, and palladium nanoparticles. The reacted units of the 2,4,6-trimethyl-1,3,5-triazine and the reacted units of the 4,4-biphenyldicarbaldehyde form a COF-701, where the palladium nanoparticles are on an outer surface of the COF-701. The co-catalyst is n-tetrabutylammonium bromide.

The present disclosure relates to using monomer-based heteropolymers to create random heteropolymers that act as biomimetic catalysts that can be evolved to mimic activities of different classes of natural enzymes. The random heteropolymers comprise a mixture of heteropolymer sequences wherein a portion of the heteropolymers comprise a catalytically active region similar to that of a naturally occurring enzyme active site.