Veinberg
Grigory Veinberg, Riga LV
Patent application number | Description | Published |
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20100022784 | N-Carbamoylmethyl-4-(R)-Phenyl-2-Pyrrolidinone, Method of its Preparation and Pharmaceutical Use - The invention relates to the R-enantiomer of N-carbamoylmethyl-4-phenyl-2-pyrrolidinone (R-Carphedon) of pharmacological value. The method of its preparation includes the N-alkylation of 4(R)-phenyl-2-pyrrolidinone with ethyl bromoacetate in the presence of a strong base and the treatment of intermediate N-ethoxycarbonylmethyl-4(R)-phenyl-2-pyrrolidinone with ammonia. | 01-28-2010 |
20110263864 | REGENERATION OF 2,2'-CYCLOPROPYLIDENE-BIS (OXAZOLINES) - The present invention provides a method for regeneration of chiral 2,2′-cyclopropylidene-bis(oxazolines), such as (3&R, 3′aR,8aS,8′aS)-2,2′-cyclopropylidenebis-[3a,8a]-dihydro-8H-indeno-[1,2-d]-oxazole and (45,4′5,5R,5′R)-2,2′-cyclopropy-lidenebis-4,5-diphenyldihydro-4,5-oxazole, used as a part of complex catalysts for e.g. stereoselective addition reactions, from the reaction mixtures, by selective sorption of 2,2′-cyclopropylidene-bis(oxazolines) on a sorbent, such as silica gel, isolation of the sorbent from reaction mixture, desorption of 2,2′-cyclopropylidene-bis(oxazolines) from the sorbent with suitable organic solvent and final recovery of 2,2′-cyclopropylidene-bis(oxazolines) from the organic solvent used for desorption process. Catalytic quality of recovered compounds does not differ from those in freshly prepared catalysts. | 10-27-2011 |
Irena Veinberg, Rehovot IL
Patent application number | Description | Published |
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20080269270 | Triol form of rosuvastatin and synthesis of rosuvastatin - Provided is a rosuvastatin triol and its use as a reference standard for analysis of rosuvastatin. Also provided are methods for preparation of rosuvastatin. | 10-30-2008 |
20090099383 | Purification of rosuvatatin intermediate by thin film evaporation and chemical method - Provided are processes for the purification of a pure rosuvastatin intermediate by thin film evaporation and chemical method, and conversion of the intermediate to rosuvastatin or salts thereof. | 04-16-2009 |
Veniamin Yakovlevich Veinberg, Moscow RU
Patent application number | Description | Published |
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20100215350 | Power System - The inventive power system preferably comprises an air-duct provided with a vane-type rotor, which is arranged therein and mechanically connected to a shaft of a generator, and a heater electrically connected to the generator's outlet. The air-duct is incorporated into a building or arranged outside thereof. It can be located between the outer and inner walls of thereof and in its premises. The heater is mounted directly on the vanes of the rotor or they can be embodied in the form of electric heater. The electric heater located outside of the air-duct warms up the building independently of the temperature of air in the air-duct. An elastic sleeve can be installed between the air-duct and an air-balloon and is embodied in the form of a portion of the air-duct. The system can comprise a number of air-ducts of different configurations, a number of heat exchangers (heaters and/or coolers). | 08-26-2010 |