Organic compounds -- part of the class 532-570 series inventions 01/07

20070021622 - Production method of highly pure pyromellitic dianhydride: A method of producing pyromellitic dianhydride. The method includes a step of heating a crude pyromellitic acid in the absence of acetic anhydride to convert a part of pyromellitic acid to pyromellitic anhydride, and a subsequent step of heating the resultant mixture in the presence of acetic anhydride to complete... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070021623 - Novel process for preparation of nebivolol intermediates: The present invention relates to a process for separation of desired diastereomeric pair from a mixture of diastereomeric pairs thereby obtaining nebivolol intermediates. Thus, the mixture of (+)-[1S*(R*)]-6-fluoro-3,4-di-hydro-α-[[(phenylmethyl)amino]methyl]-2H-1-benzopyran-2-methanol, (+)-[1S*(S*)]-6-fluoro-3,4-dihydro-2-oxi -ranyl-2H-1-benzopyran and ethanol is heated to reflux temperature and stirred for 8 hours at the same temperature to obtain (±)-[2R*[1S*,5S*(S*)]]+[2R*[1S*,5R*(R*)]]-α,α′-[phenylmethyliminobis(methylene)]bis[6-fluoro-3,4-dihydro-2H-1-benzopyran ran-2-methanol].... Agent: Caesar, Rivise, Bernstein, Cohen & Pokotilow, Ltd.

20070015925 - Phospholane salts and their use in enantioselective hydrogenation: Process for preparing a catalyst solution by reacting metal complexes and diphosphines in the presence of an inert organic solvent, which is characterized in that a) an uncharged or cationic metal complex having a TM8 metal as central atom, and b) a salt of a chiral ditertiary diphosphine which has... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070015926 - Method of preparing r-(+)-alpha-lipoic acid and its salt: The present invention discloses a method for preparing R-(+)-LA as well as its metal salts including sodium salt, potassium salt, calcium salt, magnesium salt, zinc salt, ferric salt, cooper salt , lithium salt and its organic salt, wherein a racemic Ethyl 6, 8-Dichlorooctanoic acid is employed as starting agents, followed... Agent: Raymond Y. Chan

20070010678 - Efficient method for preparing 3-aryloxy-3-arylpropylamines and their optical stereoisomers: Provided is an efficient method for the preparation of 3-aryloxy-3-arylpropylamines, their optical stereoisomers, and pharmaceutically acceptable salts thereof. The process allows for the isolation of 3-aryloxy-3-arylpropylamines in high yield and purity. The present invention further relates to a process for producing fluoxetine, tomoxetine, norfluoxetine, duloxetine, nisoxetine, and their optically enriched... Agent: Ivor M. Hughes, Barrister & Solicitor, Patent & Trademark Agents

20070010679 - Bicyclic tetrahydrofuran lactone derivatives and process for the preparation thereof: o

20070004925 - Method for the production of phytofluene: P

20070004926 - Process for producing propylene oxide: The present invention relates to a process for producing propylene oxide comprising (I) reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (GI) comprising propylene oxide, unreacted propene, and oxygen; (II) separating propylene oxide from mixture (GI) to give a mixture (GII) comprising propene... Agent: C. Irvin Mcclelland Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.