1.

Record Nr.

UNINA9910557988403321

Titolo

Disasters of Peace : An Exchange / / edited by Christof Heyns and Karin van Marle

Pubbl/distr/stampa

Pretoria, South Africa : , : Pretoria University Law Press (PULP), , 2005

Descrizione fisica

1 online resource (33 pages)

Collana

PULP FICTIONS ; ; Number 1

Disciplina

701.03

Soggetti

Art - Political aspects

Democracy - South Africa

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Sommario/riassunto

"During the last part of 2004 and first part of 2005, the Faculty of Law of the University of Pretoria moved to a new building on campus. The artworks at the new building sparked strong controversy in the Faculty. Two members of the Faculty, who found themselves to be in disagreement on some of the issues raised in this debate, set out their views during the Arts and Reconciliation Festival and Conference at the University of Pretoria in 16 March 2005. Reprinted here are edited versions of their papers."



2.

Record Nr.

UNINA9910827565403321

Titolo

Organoselenium chemistry : synthesis and reactions / / edited by Thomas Wirth

Pubbl/distr/stampa

Weinheim, : Wiley-VCH, c2012

ISBN

9783527641956

3527641955

9781283869881

1283869888

9783527641963

3527641963

9783527641949

3527641947

Edizione

[1st ed.]

Descrizione fisica

1 online resource (464 p.)

Altri autori (Persone)

WirthThomas <1964->

Disciplina

547.05724

Soggetti

Organoselenium compounds

Selenium compounds

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

Organoselenium Chemistry: Synthesis and Reactions; Contents; Preface; List of Contributors; 1: Electrophilic Selenium; 1.1 General Introduction; 1.1.1 Synthesis of Electrophilic Selenium Reagents; 1.1.2 Reactivity and Properties; 1.2 Addition Reactions to Double Bonds; 1.2.1 Addition Reaction Involving Oxygen-Centered Nucleophiles; 1.2.2 Addition Reaction Involving Nitrogen-Centered Nucleophiles; 1.2.3 Addition Reactions Involving Carbon-Centered Nucleophiles; 1.2.4 Addition Reaction Involving Chiral Nucleophiles or Chiral Substrates; 1.3 Selenocyclizations; 1.3.1 Oxygen Nucleophiles

1.3.2 Nitrogen Nucleophiles1.3.3 Competition between Oxygen and Nitrogen Nucleophiles; 1.3.4 Carbon Nucleophiles; 1.3.5 Double Cyclization Reactions; References; 2: Nucleophilic Selenium; 2.1 Introduction; 2.1.1 Development of Nucleophilic Selenium Reagents; 2.1.2 Examples of Recent Applications; 2.2 Properties of Selenols and Selenolates; 2.2.1 Electronegativity of Selenium; 2.2.2 Tautomerism of



Selenols; 2.2.3 Nucleophilicity of Selenolates; 2.3 Inorganic Nucleophilic Selenium Reagents; 2.3.1 Conventional Reagents; 2.3.2 New Reagents; 2.4 Organic Nucleophilic Selenium Reagents

2.4.1 Preparation 2.4.2 Structure; 2.4.3 Ammonium Selenolates (NH4+); 2.4.4 Selenolates of Group 1 Elements (Li, Na, K, and Cs); 2.4.5 Selenolates of Group 2 Elements (Mg, Ca, and Ba); 2.4.6 Selenolates of Group 3 Elements (Sm, Ce, Pr, Nb, and U); 2.4.7 Selenolates of Group 4 Elements (Ti, Zr, and Hf); 2.4.8 Selenolates of Group 5 Elements (V, Nb, and Ta); 2.4.9 Selenolates of Group 6 Elements (Mo and W); 2.4.10 Selenolates of Group 7 Elements (Mn and Re); 2.4.11 Selenolates of Group 8 Elements (Fe, Ru, and Os); 2.4.12 Selenolates of Group 9 Elements (Co, Rh, and Ir)

2.4.13 Selenolates of Group 10 Elements (Ni, Pd, and Pt)2.4.14 Selenolates of Group 11 Elements (Cu, Ag, and Au); 2.4.15 Selenolates of Group 12 Elements (Zn, Cd, and Hg); 2.4.16 Selenolates of Group 13 Elements (B, Al, Ga, and In); 2.4.17 Selenolates of Group 14 Elements (Si, Ge, Sn, and Pb); 2.4.18 Selenolates of Group 15 Elements (P, As, Sb, and Bi); References; 3: Selenium Compounds in Radical Reactions; 3.1 Homolytic Substitution at Selenium to Generate Radical Precursors; 3.1.1 Bimolecular SH2 Reactions: Synthetic Considerations; 3.1.1.1 Radical Reagents

3.1.2 Alkyl Radicals from Selenide Precursors 3.1.3 Acyl Radicals from Acyl Selenide Precursors; 3.1.4 Imidoyl Radicals from Imidoyl Selenides; 3.1.5 Other Radicals from Selenide Precursors; 3.2 Selenide Building Blocks; 3.3 Solid-Phase Synthesis; 3.4 Selenide Precursors in Radical Domino Reactions; 3.5 Homolytic Substitution at Selenium for the Synthesis of Se-Containing Products; 3.5.1 Intermolecular SH2 onto Se; 3.5.2 Intramolecular SH2: Cyclization onto Se; 3.6 Seleno Group Transfer onto Alkenes and Alkynes; 3.6.1 Seleno-Selenation; 3.6.2 Seleno-Sulfonation; 3.6.3 Seleno-Alkylation

3.7 PhSeH in Radical Reactions

Sommario/riassunto

Selenium-based methods in synthetic chemistry have developed rapidly over the past years and are now offering highly useful tools for organic synthesis. Filling the gap for a comprehensive handbook and ready reference, this book covers all modern developments within the field, including biochemical aspects. The chemistry chapters are organized according to the different reactivities of various selenium compounds and reagents, with each chapter dealing with a special reaction type. Also includes a table with 77Se NMR shifts to aid in practical problems.From the Contents