Michinori Oki

The Chemistry of Rotational Isomers (eBook, PDF)

• Format: PDF

Produktbeschreibung

Rotation about the Carbon-Carbon single bond is generally regarded to be unrestricted. About 50 years ago, rotational isomers were found to exhibit optical activity: substituted biphenyl derivatives. However, the author has investigated other classes of compounds that have stable rotational isomers at room temperature. These compounds can serve as models for studying very weak intermolecular interactions, that are difficult to observe. Even diastereotopic groups show different chemical reactivity. From the contents: The "Free Rotation Concept" - Rotamer Populations - Barriers to Rotation - Reactivity of Rotational Isomers.

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Produktdetails

• Verlag: Springer Berlin Heidelberg
• Seitenzahl: 172
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9783642510243
• Artikelnr.: 53137247

Autorenporträt

Organic chemical compounds exhibiting atropisomerism are important substances for investigating intermolecular interactions. They also demonstrate very interesting anomalities in reactivity of diastereotopic groups. This monograph is of particular interest to physical and to synthetic organic chemists. The author has investigated two particular classes of compounds that have stable rotational isomers at room temperature.

Inhaltsangabe

1 Introduction.- 1.1 The "Free Rotation" Concept.- 1.2 Recognition of Rotational Isomers.- 1.3 Atropisomers.- 1.4 Isolation of Rotational Isomers.- 1.5 Concepts That Need Modification.- 1.6 References.- 2 Rotamer Populations.- 2.1 Estimation of Rotamer Populations.- 2.2 Factors That Affect Rotamer Populations.- 2.3 Information on Molecular Interactions Obtained from Rotamer Populations.- 2.4 References.- 3 Barriers to Rotation.- 3.1 Estimation of Barriers to Rotation.- 3.2 High Barriers to Rotation in the 9-Arylfluorene Series.- 3.3 High Barriers to Rotation in 9-Substituted Triptycene Series.- 3.4 High Barriers to Rotation in Miscellaneous Compounds.- 3.5 References.- 4 Reactivity of Rotational Isomers.- 4.1 Reactivity of 9-Arylfluorenes.- 4.2 Reactivity of Substituted Triptycenes.- 4.3 References.