Organosulfur chemistry in asymmetric synthesis / / edited by Takeshi Toru and Carsten Bolm

• Record Nr.: UNINA9911019856003321
• Pubbl/distr/stampa: Weinheim, : Wiley-VCH, c2008
• ISBN: 9786611947170; 9781281947178; 1281947172; 9783527623235; 352762323X; 9783527623242; 3527623248
• Descrizione fisica: 1 online resource (450 p.)
• Altri autori (Persone): ToruTakeshi; BolmCarsten
• Disciplina: 547.06045
• Soggetti: Organosulfur compounds; Asymmetric synthesis; Enantioselective catalysis
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Organosulfur Chemistry in Asymmetric Synthesis; Contents; Preface; List of Contributors; 1 Asymmetric Synthesis of Chiral Sulfoxides; 1.1 Chiral Sulfoxides; 1.1.1 Introduction; 1.1.2 The Main Routes to Chiral Sulfoxides; 1.2 Use of Chiral Sulfur Precursors; 1.2.1 Sulfinates (Andersen Method); 1.2.2 Diastereoselective Formation of Sulfinates; 1.2.3 Sulfinates from Sulfites; 1.2.4 Sulfinamides; 1.3 Catalytic Enantioselective Sulfide Oxidation; 1.3.1 Titanium Complexes; 1.3.1.1 Diesters of Tartaric Acid; 1.3.1.2 C(2)-Symmetric 1,2-Diols as Ligands; 1.3.1.3 Binaphthol and Derivatives; 1.3.1.4 C(3)-Symmetric Triethanolamine Ligands1.3.1.5 Ti (Salen) Catalysts; 1.3.2 Manganese Complexes; 1.3.3 Vanadium Complexes; 1.3.4 Molybdenum Complexes; 1.3.5 Iron Complexes; 1.3.6 Miscellaneous; 1.4 Catalytic Arylation of Sulfenate Anions; 1.5 Enantioselective Oxidation of Sulfides; 1.6 Summary; References; 2 ; Asymmetric Synthesis of Optically Active Sulfinic Acid Esters; 2.1 Introduction; 2.2 Enantiomeric Sulfinic Acid Esters; 2.3 Diastereomeric Sulfinic Acid Esters; References; 3 Asymmetric Transformations Mediated by Sulfinyl Groups; 3.1 Introduction; 3.2 Nucleophilic Additions to C=O and C=N Bonds Mediated by α-Sulfinyl Groups3.2.1 β-Ketosulfoxides; 3.2.1.1 Reduction Reactions; 3.2.1.2 Alkylation Reactions; 3.2.1.3 Aldol Reaction with β-Ketosulfoxides Acting as Electrophiles; 3.2.1.4 Hydrocyanation Reactions; 3.2.2 β-Imino(enamino)sulfoxides; 3.3 Conjugate Additions to α,β-Unsaturated Sulfoxides; 3.3.1 Nucleophilic Additions; 3.3.1.1 (E) and (Z)-2-Substituted Vinyl Sulfoxides; 3.3.1.2 1-Substituted Vinyl Sulfoxides; 3.3.2 Tandem Reactions; 3.3.3 Radical Conjugate Additions and Other Reactions; 3.4 Cycloadditions; 3.4.1 Asymmetric Diels-Alder Reactions3.4.1.1 Sulfinyl Dienophiles; 3.4.1.2 Sulfinyl Dienes; 3.4.2 Asymmetric Hetero Diels-Alder Reactions; 3.4.3 Asymmetric 1,3-Dipolar Cycloadditions; 3.4.3.1 Reactions with Nitrones; 3.4.3.2 Reactions with Azomethine Ylides; 3.4.3.3 Reactions with Nitrile Oxides; 3.4.3.4 Reactions with Diazoalkanes; 3.4.3.5 Reactions with Other Dipoles; 3.4.4 Other Asymmetric Cycloadditions; 3.5 Asymmetric Processes Stereocontrolled by Remote Sulfoxides; 3.5.1 Nucleophilic Processes; 3.5.1.1 Reactions with Sulfinylated Electrophiles; 3.5.1.2 Reactions with Sulfinylated Nucleophiles3.6 Asymmetric Pummerer Reaction; References; 4 Synthesis and Applications of Chiral Dithioacetal Derivatives; 4.1 Introduction; 4.2 Lithiated Dithianes; 4.3 Alternative Methods; 4.4 Oxidation Methods for the Construction of Chiral Dithioacetal Derivatives and Applications in Synthesis; 4.5 Applications of Chiral Dithioacetal Derivatives in Natural Product and Biologically Active Compound Synthesis; 4.6 Summary; References; 5 Synthesis and Use of Chiral Sulfur Ylides; 5.1 Introduction; 5.1.1 Reactions of Sulfonium Ylides; 5.1.2 Methods of Preparation
• Sommario/riassunto: In this first book to gather the information on this hot topic otherwise widely spread throughout the literature, experienced editors and top international authors cover everything the reader needs -- from the synthesis of chiral organosulfur compounds to applications and catalysis: * Asymmetric synthesis of chiral sulfinates and sulfoxides* Synthesis and use of chiral dithioacetal derivatives, ylids, chiral sulfoximines and sulfinamides* Use of chiral sulfoxides as ligands in catalysis* Asymmetric reactions of alpha-sulfenyl, alpha-sulfinyl and alpha-sulfonyl carbanions.As

Von Pflanzen und Pflichten - Zum naturalistischen Ursprung des stoischen kathēkon

• Record Nr.: UNINA9910490712903321
• Autore: Lorenz Manuel
• Pubbl/distr/stampa: Basel, : Schwabe Verlag, 2020
• Descrizione fisica: 1 online resource
• Lingua di pubblicazione: Tedesco
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Sommario/riassunto: Diese Studie untersucht einen zentralen Begriff der antiken Ethik, der als Vorläufer des modernen Pflichtbegriffs Ideengeschichte geschrieben hat: das kathekon (lat. officium). Die Untersuchung zeigt, wie die frühen Stoiker, die diesen Begriff in die ethische Terminologie einführten, das kathekon philosophisch begründeten. Demzufolge ist ein kathekon eine Handlung, die es aus guten Gründen auszuführen gilt. Aber unter welchen Umständen ist eine solche Handlung gut begründet? Die Analyse kommt zu dem Ergebnis, dass als Massstab nicht in erster Linie die menschliche Vernunft gilt. Vielmehr ist der primäre Bezugspunkt für die Begründung die Natur, die alle Prozesse im Kosmos zweckmässig organisiert. Ein kathekon ist demnach eine Aktivität, mit der ein Lebewesen - ob Pflanze, Tier oder Mensch - dem teleologisch gedachten Willen der Natur Folge leistet.