Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.
C07C 51/16 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation
C07C 51/377 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groupsPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by hydrogenolysis of functional groups
2.
METHOD FOR THE PRODUCTION OF 2,4-DIHYDROXYBUTYRIC ACID
Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.
C07C 51/16 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation
C07C 51/377 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groupsPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by hydrogenolysis of functional groups
3.
METHODS FOR THE SIMULTANEOUS ELECTROLYTIC DECARBOXYLATION AND REDUCTION OF SUGARS
Methods for simultaneously decarboxylating carbohydrate acids and reducing carbohydrate aldehydes in a divided electrochemical cell having a central compartment separate from the anode and cathode are disclosed using a cation membrane and a bipolar membrane. The improved methods are more cost-efficient and environmentally friendly.
Methods for decarboxylating carbohydrate acids in a divided electrochemical cell are disclosed using a cation membrane. The improved methods are more cost- efficient and environmentally friendly than conventional methods.
C25B 3/02 - Electrolytic production of organic compounds by oxidation
C25B 3/00 - Electrolytic production of organic compounds
C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features
01 - Chemical and biological materials for industrial, scientific and agricultural use
05 - Pharmaceutical, veterinary and sanitary products
30 - Basic staples, tea, coffee, baked goods and confectionery
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Chemical compound, namely, a non-nutritional, low-calorie sweetening ingredient used in food, cosmetic, pharmaceutical, or dietary products; artificial sweeteners; erythritol; erythritol for use as a natural sweetener; sugar-free sweetener for beverages; research reagents for industrial use, namely, for food testing; erythritol-containing specialty natural sweetener. Dietetic sugar for medical use. Dietary aid, namely a low-calorie sweetening ingredient used in food products and beverages, namely xylitol; natural sweetener; Food product, namely a low-calorie sugar substitute; sweeteners, namely sugar substitutes; sugar and sugar substitutes. Interactive web site providing information concerning low calorie sweeteners, recipes, cooking and baking.
6.
METHODS FOR THE ELECTROLYTIC PRODUCTION OF ERYTHRITOL
Methods for the production of erythrose and/or erythritol are provided herein. Preferably, the method of producing erythritol includes the step of electrolytic decarboxylation of a ribonic acid or arabinonic acid reactant to produce erythrose and the step of electrolytic reduction or erythrose to produce erythritol. Optionally, the reactant can be obtained from a suitable hexose sugar, such as allose, altrose, glucose, fructose or mannose.
Method and electrochemical cells for producing xylo-pent-1,5-diose are provided. The xylo-pent-1,5-diose may be formed in a solution initially comprising D-glucuronic acid or D-glucuronic acid glycoside. The xylo-pent-1,5-diose may be formed by electrochemical oxidative decarboxylation of the D-glucuronic acid or D-glucuronic acid glycoside in the solution in the presence of a graphite foil electrode with improved current efficiency and/or current density.
C25B 3/00 - Electrolytic production of organic compounds
C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features
8.
COMPOSITIONS AND PROCESSES FOR THE SELECTIVE CATALYTIC OXIDATION OF ALCOHOLS
Processes for oxidation of primary alcohols or aldehydes into the corresponding carboxylic acids are provided herein, including processes for the aerobic catalytic oxidation of a hydroxyl moiety pendant to a cyclic carbohydrate to a carboxylic acid in a manner that preserves the cyclic carbohydrate structure. The oxidation processes may be performed in the absence of a transition metal catalyst, halogenated solvent and a hypochlorite reagent. The processes and compositions with and without a bromide source are provided. A liquid reaction media comprising a carboxylic acid and a catalyst composition comprising a nitroxyl radical and a nitrogen-containing co-catalyst selected from a nitrate source, a nitric oxide derivative and a nitrogen dioxide derivative, may.be combined with the reactant alcohol substrate to form a reaction media which can be pressurized at constant volume with an oxygen-containing gas under conditions of temperature and constant pressure within a reaction vessel to selectively oxidize the reactant substrate to form a carboxylic acid product. Preferably, the reactant alcohol substrate is a cyclic carbohydrate having a pendant primary or secondary alcohol that is converted to a carboxylic acid by the selective oxidation process, such as the conversion of an alkyl-glucopyranoside to a corresponding alkyl-glucuronic acid.
C07B 41/08 - Formation or introduction of functional groups containing oxygen of carboxyl groups or salts, halides or anhydrides thereof
C07C 51/235 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups of —CHO groups or primary alcohol groups
Methods for the production of erythrose and/or erythritol are provided herein. Preferably, the methods include the step of electrolytic decarboxylation of a ribonic acid or arabinonic acid reactant to produce erythrose. Optionally, the reactant can be obtained from a suitable hexose sugar, such as allose, altrose, glucose, fructose or mannose. The erythrose product can be hydrogenated to produce erythritol.
