BISPHENOL COMPOSITION CONTAINING AROMATIC ALCOHOL SULFONATE AND METHOD FOR PRODUCING SAME, POLYCARBONATE RESIN AND METHOD FOR PRODUCING SAME, AND BISPHENOL PRODUCTION METHOD
申请人:MITSUBISHI CHEMICAL CORPORATION
公开号:US20200190004A1
公开(公告)日:2020-06-18
A bisphenol composition including a specific amount of aromatic alcohol sulfonate, and a simple method of producing it are provided. Also provided is a method of producing a polycarbonate resin in which, by using the bisphenol composition including a specific amount of aromatic alcohol sulfonate, melt polymerization reaction can be efficiently allowed to proceed to produce a polycarbonate resin having an excellent color tone. A bisphenol composition including an aromatic alcohol sulfonate at not less than 0.1 ppb by mass with respect to a bisphenol. A method of producing a bisphenol composition, including reacting a ketone or an aldehyde with an aromatic alcohol in the presence of sulfuric acid to produce a bisphenol composition. A method of producing a polycarbonate resin, including producing a polycarbonate resin using the bisphenol composition. A polycarbonate resin including a specific amount of aromatic alcohol sulfonate.
A new class of aminoketone derivatives according to the formula: ##STR1## and certain propiophenone derivatives in particular, corresponding to the formula: ##STR2## having central muscle relaxant activity.
Developing a New Class of Axial Chiral Phosphorus Ligands: Preparation and Characterization of Enantiopure Atropisomeric Phosphinines
作者:Christian Müller、Evgeny A. Pidko、Antonius J. P. M. Staring、Martin Lutz、Anthony L. Spek、Rutger A. van Santen、Dieter Vogt
DOI:10.1002/chem.200800175
日期:2008.5.29
Both enantiomers of the first atropisomericphosphinine (1) have been isolated by using analytical HPLC on a chiral stationary phase. The enrichment of one enantiomer and a subsequent investigation into its racemization kinetics revealed a barrier for internal rotation of DeltaG(298)(double dagger) = (109.5+/-0.5) kJ mol(-1), which is in excellent agreement with the theoretically predicted value of
[EN] SULFONAMIDES FOR TREATMENT OF ENDOTHELIN-MEDIATED DISORDERS<br/>[FR] SULFAMIDES POUR LE TRAITEMENT DES TROUBLES INDUITS PAR L'ENDOTHELINE
申请人:TEXAS BIOTECHNOLOGY CORPORATION
公开号:WO1998049162A1
公开(公告)日:1998-11-05
(EN) Thienyl-, furyl- and pyrrolyl-sulfonamides, pharmaceutically-acceptable salts of sulfonamides, formulations of salts and the sulfonamides, and methods for modulating or altering the activity of the endothelin family of peptides using the formulations and sulfonamides are provided. In particular, formulations of sodium salts of N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.(FR) L'invention concerne des thiényl-, furyl- et pyrolylsulfamides, des sels pharmaceutiquement acceptables de sulfamides, des formulations de sels et des sulfamides, ainsi que des procédés visant à moduler ou altérer l'activité des peptides appartenant à la famille de l'endothéline au moyen des formulations et des sulfamides en question. En particulier, l'invention concerne des formulations de sels de sodium de N-(isoxazolyl)thiénylsulfamides, N-(isoxazolyl)furylsulfamides, et N-(isoxazolyl)pyrolylsulfamides. L'invention concerne aussi un procédé d'élaboration de sel de métal alcalin à partir d'un sulfamide hydrophobe. Ce procédé consiste à dissoudre un sulfamide libre dans un solvant organique, en présence d'un soluté salin de métal alcalin saturé, et à extraire de la phase organique le sel de sulfamide ainsi formé.
Process for producing an optically active aminoketone derivative
申请人:Nippon Kayaku Kabushiki Kaisha
公开号:US05103022A1
公开(公告)日:1992-04-07
A process for producing an optically active aminoketone derivative having a central muscle relaxant activity is described wherein a racemic mixture of the aminoketone is reacted with optically active L-acetylphenylglycine and then isolating the optically active L-aminoketone from the diastereomeric salts formed by the reaction.