Monitoring of reversible boronic acid–diol interactions by fluorine NMR spectroscopy in aqueous media

2015 ◽  
Vol 13 (33) ◽  
pp. 8817-8821 ◽  
Author(s):  
L. Iannazzo ◽  
E. Benedetti ◽  
M. Catala ◽  
M. Etheve-Quelquejeu ◽  
C. Tisné ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Convenient Method ◽  
Boronic Acid ◽  
Aqueous Media ◽  
Fluorine Nmr

A new convenient method for monitoring boronic acid–diol interactions in aqueous media based on 19F NMR spectroscopy with fluorinated boronic acid probes is described.

scholarly journals Real-time analysis of multiple anion mixtures in aqueous media using a single receptor

2015 ◽  
Vol 51 (22) ◽  
pp. 4666-4669 ◽  
Author(s):  
Vaclav Havel ◽  
Mirza Arfan Yawer ◽  
Vladimir Sindelar
Keyword(s):  
Nmr Spectroscopy ◽  
Real Time ◽  
Aqueous Media ◽  
Time Analysis ◽  
Qualitative And Quantitative ◽  
H Nmr ◽  
Real Time Analysis ◽  
Single Receptor

Bambusuril macrocycles allow qualitative and quantitative sensing of anion mixtures in water using 1H NMR spectroscopy.

Preparation and Properties of (Hydroxymethyl)boronic Acid and its Pinanediol Ester

2011 ◽  
Vol 64 (11) ◽  
pp. 1425 ◽  
Author(s):  
Donald S. Matteson
Keyword(s):  
Nmr Spectroscopy ◽  
Asymmetric Synthesis ◽  
Sodium Hydroxide ◽  
Isotope Effect ◽  
Boronic Acid ◽  
Efficient Route ◽  
The Stability ◽  
Hydrolysis Of

Hydrolysis of diisopropyl (bromomethyl)boronate followed by reaction with pinanediol provides an efficient route to pinanediol (hydroxymethyl)boronate (12), a useful intermediate for asymmetric synthesis. The stability of (hydroxymethyl)boronic acid (10) and its ester 12 have been examined by NMR spectroscopy. Heating for 1 h in acidic D2O does not degrade 10 and only affects the pinanediol moiety of 12. Base does not degrade 10 or 12 in several days at 20–25°C, but converts either to DCH2OD and CH3OD in a few h at 90–98°C, with a large H/D isotope effect. Pinanediol (bromomethyl)boronate with sodium hydroxide in D2O yields a gross mixture of products.

Copper(ii)-catalyzed protoboration of allenes in aqueous media and open air

2021 ◽  
Author(s):  
Russell F. Snead ◽  
Jan Nekvinda ◽  
Webster L. Santos
Keyword(s):  
Boronic Acid ◽  
Room Temperature ◽  
Aqueous Media ◽  
Boronic Acid Derivatives

A copper(ii)-catalyzed internal protoboration of monosubstituted allenes efficiently occurs in water at room temperature and open air to generate 1,1-disubstituted vinyl boronic acid derivatives.

Boronic Acid Based Peptidic Receptors for Pattern-Based Saccharide Sensing in Neutral Aqueous Media, an Application in Real-Life Samples

2007 ◽  
Vol 129 (44) ◽  
pp. 13575-13583 ◽  
Author(s):  
Nicola Y. Edwards ◽  
Thomas W. Sager ◽  
John T. McDevitt ◽  
Eric V. Anslyn
Keyword(s):  
Boronic Acid ◽  
Aqueous Media ◽  
Real Life

A photo-oxidation of croconic acid into oxalic acid

1995 ◽  
Vol 73 (8) ◽  
pp. 1298-1304 ◽  
Author(s):  
Paul-Louis Fabre ◽  
Paule Castan ◽  
Diane Deguenon ◽  
Nicole Paillous
Keyword(s):  
Nmr Spectroscopy ◽  
Oxalic Acid ◽  
Electrochemical Oxidation ◽  
Oxidation Process ◽  
Aqueous Media ◽  
Oxidation Products ◽  
Acid Oxidation ◽  
Experimental Conditions ◽  
Photo Oxidation ◽  
C Nmr

Croconic acid, H2C5O5, is readily oxidized. This may be attested by decolorization of the solutions and by observation of oxalic acid complexes. The oxidation products are identified by 13C NMR spectroscopy as oxalic and mesoxalic acids, and experimental conditions are specified. The oxidation process requires dioxygen and photons. In parallel, the electrochemical oxidation of croconic acid is studied in aqueous media and in acetonitrile. A potential–pH diagram is drawn. Keywords: croconic acid, oxalic acid, oxidation, electrochemistry, photochemistry.

scholarly journals Self‐organization Properties of a GPCR‐Binding Peptide with a Fluorinated Tail Studied by Fluorine NMR Spectroscopy

ChemBioChem ◽  
2020 ◽  
Author(s):  
Capucine Jourdain de Muizon ◽  
Sridévi M. Ramanoudjame ◽  
Lucie Esteoulle ◽  
Claude Ling ◽  
Germain Brou ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Self Organization ◽  
Binding Peptide ◽  
Fluorine Nmr

“On water” palladium catalyzed diastereoselective boronic acid addition to structurally diverse cyclopropane nitriles

2020 ◽  
Vol 18 (43) ◽  
pp. 8886-8898
Author(s):  
Dwaipayan Das ◽  
Prasun Mukherjee ◽  
Asish R. Das
Keyword(s):  
Boronic Acid ◽  
Aqueous Media ◽  
Catalytic Amount ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Arylboronic Acids ◽  
Acid Addition ◽  
Brönsted Acid ◽  
Diastereoselective Addition ◽  
Palladium Catalyzed

An efficient palladium catalyzed diastereoselective addition of arylboronic acids to complex spirocyclopropyl dinitriles is developed in the presence of a catalytic amount of DBSA as a Brønsted acid surfactant in aqueous media.

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