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Protic solvents

Brian G. Cox

in Acids and Bases: Solvent Effects on Acid-Base Strength

Published in print:
2013
Published Online:
May 2013
ISBN:
9780199670512
eISBN:
9780199670512
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199670512.003.0005
Subject:
Physics, Condensed Matter Physics / Materials

Protic solvents have hydrogen bound directly to electronegative atoms, such as oxygen or nitrogen. They are characterized by their ability to form strong hydrogen bonds with suitable acceptors, ... More


High-Basicity Polar Aprotic Solvents

Brian G. Cox

in Acids and Bases: Solvent Effects on Acid-Base Strength

Published in print:
2013
Published Online:
May 2013
ISBN:
9780199670512
eISBN:
9780199670512
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199670512.003.0006
Subject:
Physics, Condensed Matter Physics / Materials

Basic polar aprotic solvents such as dimethylsulphoxide, dimethylformamide, and N-methylpyrrolidin-2-one are very poor at solvating anions, but interact strongly with cations and the proton in ... More


Low-Basicity and Low-Polarity Aprotic Solvents

Brian G. Cox

in Acids and Bases: Solvent Effects on Acid-Base Strength

Published in print:
2013
Published Online:
May 2013
ISBN:
9780199670512
eISBN:
9780199670512
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199670512.003.0007
Subject:
Physics, Condensed Matter Physics / Materials

Low-basicity and low-polarity aprotic solvents, including importantly acetonitrile and tetrahydrofuran, are poor at solvating both anions and cations. Dissociation constants are consequently very ... More


Acquisition and Interpretation of Liquid-state 1H NMR Spectra of Humic and Fulvic Acids

Jerry A. Leenheer and T. I. Noyes

in Nuclear Magnetic Resonance Spectroscopy in Environment Chemistry

Published in print:
1997
Published Online:
November 2020
ISBN:
9780195097511
eISBN:
9780197560853
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780195097511.003.0023
Subject:
Chemistry, Environmental Chemistry

Fourier Transform nuclear magnetic resonance (NMR) spectrometers have become available to many researchers studying humic substances over the last decade. ... 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 ... More


Exercises

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/9780199996803.003.0009
Subject:
Chemistry, Organic Chemistry

This chapter contains fifty exercises in the use of the methods described in the previous pages to the assignment of the absolute configuration of different ... More


27Al NMR Study of the Hydrolysis and Condensation of Organically Complexed Aluminum

Fabien Thomas and Armand Masion

in Nuclear Magnetic Resonance Spectroscopy in Environment Chemistry

Published in print:
1997
Published Online:
November 2020
ISBN:
9780195097511
eISBN:
9780197560853
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780195097511.003.0015
Subject:
Chemistry, Environmental Chemistry

Aluminum is the most abundant metal of the Earth’s crust, of which it represents approximately 8%, ranking after oxygen and silicon. It exists mainly as ... More


Flow Chemistry

Douglass F. Taber

in Organic Synthesis: State of the Art, 2013-2015

Published in print:
2017
Published Online:
November 2020
ISBN:
9780190646165
eISBN:
9780197559734
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190646165.003.0018
Subject:
Chemistry, Organic Chemistry

Arturo Macchi of the University of Ottawa and Dominique M. Roberge of Lonza sum­marized (Org. Process Res. Dev. 2014, 18, 1286) a “toolbox approach” for the evolution ... More


Antihistamines as Allergy Drugs

Jie Jack Li

in Blockbuster Drugs: The Rise and Fall of the Pharmaceutical Industry

Published in print:
2014
Published Online:
November 2020
ISBN:
9780199737680
eISBN:
9780197563014
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199737680.003.0007
Subject:
Chemistry, Medicinal Chemistry

Most blockbusters have at least one thing in common—they are all widely prescribed to treat common illnesses such as hypertension, high cholesterol, pain, ulcers, and ... More


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]. ... More


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