Abstract:
PROBLEM TO BE SOLVED: To obtain a weight-enlarged ligand for a hydrogenation catalyst in an asymmetric homogeneous system for a double bond enabling the performance of a continuous catalytic process. SOLUTION: This homogeneously soluble weight-enlarged ligand includes a homochiral active center of bis (3, 4-diarylphosphinyl)pyrrolidine.
Abstract:
PROBLEM TO BE SOLVED: To enable the lowering of production cost by providing the use of molecular weight-enlarged, homogeneously soluble catalysts in a membrane reactor in a process for the asymmetric, continuous hydrogenation of C=C, C=N or C=0 double bonds, novel molecular weight-enlarged ligands, and asymmetric hydrogenation catalysts. SOLUTION: The ligands, catalysts, active centre, and their uses, comprises ligands such as polyacrylates, polystyrene, polysiloxanes or polyacrylates as molecular weight-enlarging agents, having an average molecular weight of 1,000 to 1,000, 000 g/mole, a metal or metal ion selected from Ru, Rh, Ir, Pd, Ni, Pt, and Co, and a representative example is N,N'-bis(2- diphenylphosphanylbenzyl) cyclohexyl-1,2-diamine as the asymmetric synthesis active center of the ligand, or the like.
Abstract:
PROBLEM TO BE SOLVED: To provide a ligand separable between a product and a catalyst relating to a membrane used and other ligands relating to the catalyst for the purpose of excluding problems that the catalyst is deactivated accompanying reaction progress. SOLUTION: In such case of a homogeneous soluble ligand having increased molecular weight for a hydrogenation catalyst having a homochiral active center, a specific linker may be inserted between the active center and a polymer skeleton, further the ligand is transferred into the catalyst and preferably may be used just like continuously or continuously in a membrane type reactor for an organic synthesis.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for oxidizing an alcohol using a polymer containing nitrogen groups having uniform solubility. SOLUTION: An alcohol is oxidized by using an oxidizing agent and a polymer extended nitroxyl derivative having uniform solubility and obtained by the copolymerization of a mixture containing a compound of formula I.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an organic compound in a film reactor by using a uniformly soluble or colloidally soluble catalyst having increased molecular weight. SOLUTION: An inorganic film having an inorganic intermediate layer which may be modified with an inorganic supporting layer and an organic group is used as a film disposed in a reactor.
Abstract:
The invention relates to a food supplement that can contain at least one amino acid, is otherwise essentially nitrogen-free, and contains at least one alpha-keto acid selected from among the group comprising alpha-ketoisocaproate, alpha-ketoisovalerate, and alpha-keto-beta-methylvalerate, and/or a salt of said alpha-keto acids. The described food supplements help build muscles while relieving metabolism in terms of nitrogen detoxification by reducing the nitrogen supply and improving nitrogen retention in the body.
Abstract:
The invention relates to a food supplement which can contain at least one amino acid, wherein the food supplement is otherwise essentially nitrogen-free and contains at least one alpha-keto acid selected from the group alpha-ketoisocaproate, alpha-ketoisovalerate and alpha-keto-beta-methylvalerate and/or a salt of these alpha-keto acids. The food supplements described support muscle build-up and simultaneously relieve metabolism in nitrogen detoxification by reduced nitrogen supply and improve nitrogen retention in the body.
Abstract:
The present invention refers to a method for the preparation of 2-keto carboxylic acid having the general formula R1-CO-COOH, wherein R1 is a branched alkyl group having 3 to 7 carbon atoms, or a salt thereof, comprising a fermentation step wherein a microorganism is grown in a culture medium in order to provide a culture broth containing 2-keto carboxylic acid or a salt thereof.
Abstract:
The invention relates to catalysts for the enantioselective aldol or Mannich reaction. Said catalysts have an increased molecular weight by being bound to a polymer and as active units that enantioselectively catalyse the aldol or Mannich reaction comprise a compound of general formula (I). The invention also relates to a method for the production and use of said catalysts.
Abstract:
The present invention is directed to bioresorbable polymers to be used as bone and tissue adhesives. The present invention is also directed to the synthesis of bioresorbable polymeric molecules bearing adhesive moieties and the use of such compounds in methods to glue and stabilize fractured bones and damaged tissues. The present invention is also directed to the use of such compounds as adhesive sealants for applications in wound care. The present invention is also directed to the use of such compounds as biodegradable ink for applications in tissue engineering and 3D printing. The present invention also relates to the use of such compounds as drug delivery platforms.