Patent classifications
C07C51/347
Non-cryogenic, ammonia-free reduction of aryl compounds
A method of reducing an aromatic ring or a cyclic, allylic ether in a compound includes preparing a reaction mixture including a compound including an aromatic moiety or a cyclic, allylic ether moiety, an alkali metal, and either ethylenediamine, diethylenetriamine, triethylenetetramine, or a combination thereof, in an ether solvent; and reacting the reaction mixture at from 20 C. to 30 C. for a time sufficient to reduce a double bond in the aromatic moiety to a single bond or to reduce the cyclic, allylic ether moiety.
Processes and intermediates for the preparations of isomer free prostaglandins
Novel processes for the preparation of a compound of Formula I-2 substantially free of the 5,6-trans isomer: ##STR00001##
wherein ##STR00002##
R.sub.2, R.sub.3 and R.sub.4 are as defined in the specification are provided. Novel intermediates for the preparations of isomer free Prostaglandins and derivatives thereof are also provided.
Processes and intermediates for the preparations of isomer free prostaglandins
Novel processes for the preparation of a compound of Formula I-2 substantially free of the 5,6-trans isomer: ##STR00001##
wherein ##STR00002##
R.sub.2, R.sub.3 and R.sub.4 are as defined in the specification are provided. Novel intermediates for the preparations of isomer free Prostaglandins and derivatives thereof are also provided.
Sodium diacetate crystal and solid dialysis preparation comprising said crystal
A novel highly stable sodium diacetate crystal, in which the volatilization of acetic acid can be suppressed for a long period. More specifically, a sodium diacetate crystal having a median diameter in the range of 300 to 3000 m.
Sodium diacetate crystal and solid dialysis preparation comprising said crystal
A novel highly stable sodium diacetate crystal, in which the volatilization of acetic acid can be suppressed for a long period. More specifically, a sodium diacetate crystal having a median diameter in the range of 300 to 3000 m.
Solid-solid separation process for long chain dicarboxylic acids
The present disclosure provides a method for isolating a long chain dicarboxylic acid from fermentation broth containing microbial cells. Also provided is a substantially pure long chain dicarboxylic acid isolated by the method.
Solid-solid separation process for long chain dicarboxylic acids
The present disclosure provides a method for isolating a long chain dicarboxylic acid from fermentation broth containing microbial cells. Also provided is a substantially pure long chain dicarboxylic acid isolated by the method.
Methods Of Making Acrylic Acid From Lactic Acid Or Its Derivatives In Liquid Phase
Methods for making acrylic acid, acrylic acid derivatives, or mixtures thereof by contacting a feed stream containing lactic acid, lactic acid derivatives, or mixtures thereof with a molten salt catalyst comprising an ionic liquid (IL) and an acid in liquid phase are provided.
Methods Of Making Acrylic Acid From Lactic Acid Or Its Derivatives In Liquid Phase
Methods for making acrylic acid, acrylic acid derivatives, or mixtures thereof by contacting a feed stream containing lactic acid, lactic acid derivatives, or mixtures thereof with a molten salt catalyst comprising an ionic liquid (IL) and an acid in liquid phase are provided.
Site-specific isotopic labeling of 1,4-diene systems
Methods for preparing isotopically modified 1,4-diene systems from non-isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.