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Assignment of the Absolute Configuration of Monofunctional Compounds by Double Derivatization

Josi M. Seco, Emilio Quiqoa, and Ricardo Riguera

in The Assignment of the Absolute Configuration by NMR using Chiral Derivatizing Agents: A Practical Guide

Published in print:
2015
Published Online:
November 2020
ISBN:
9780199996803
eISBN:
9780197563373
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199996803.003.0006
Subject:
Chemistry, Organic Chemistry

The assignment of secondary alcohols can be carried out by using one of several CDAs [13–15]. The most used and most reliable ones are MPA, 9-AMA, and MTPA [35–40]. Figure 3.1 shows their ... More


Assignment of the Absolute Configuration of Monofunctional Compounds by Single Derivatization

Josi M. Seco, Emilio Quiqoa, and Ricardo Riguera

in The Assignment of the Absolute Configuration by NMR using Chiral Derivatizing Agents: A Practical Guide

Published in print:
2015
Published Online:
November 2020
ISBN:
9780199996803
eISBN:
9780197563373
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199996803.003.0007
Subject:
Chemistry, Organic Chemistry

The procedures shown in Chapter 3 allow the determination of the absolute configuration of several classes of compounds (Chapter 1, Figure 1.18), but they require the preparation of two derivatives ... More


The Theoretical Basis for Assignment by NMR

Josi M. Seco, Emilio Quiqoa, and Ricardo Riguera

in The Assignment of the Absolute Configuration by NMR using Chiral Derivatizing Agents: A Practical Guide

Published in print:
2015
Published Online:
November 2020
ISBN:
9780199996803
eISBN:
9780197563373
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199996803.003.0004
Subject:
Chemistry, Organic Chemistry

The nuclear magnetic resonance (NMR) spectra of two enantiomers are identical. Thus, the first step in using NMR to distinguish between two enantiomers should be to produce different spectra that ... More


Practical Aspects of the Preparation of the Derivatives

Josi M. Seco, Emilio Quiqoa, and Ricardo Riguera

in The Assignment of the Absolute Configuration by NMR using Chiral Derivatizing Agents: A Practical Guide

Published in print:
2015
Published Online:
November 2020
ISBN:
9780199996803
eISBN:
9780197563373
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199996803.003.0005
Subject:
Chemistry, Organic Chemistry

Most of the NMR spectra shown in this book and in the literature have been recorded at 250 or 300 MHz, with a few being obtained at 500 MHz for 1H NMR (the equivalent for 13C NMR). No special pulse ... More


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