Results 301 to 310 of about 37,334 (332)
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Boronic Acid‐Based Carbohydrate Sensing
Chemistry – An Asian Journal, 2015AbstractThe covalent boron–diol interaction enables elaborate design of boronic acid‐based saccharide sensors. Over the last decade, this research topic has been well developed thanks to the integration of boronic acid chemistry with a range of techniques, including supramolecular chemistry, materials chemistry, surface modification, and nanotechnology.
Wenlei Zhai +3 more
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Double Couplings of Dibromothiophenes Using Boronic Acids and Boronates
Synthesis, 2008One-pot double couplings of dibromothiophenes have been investigated. Standard Suzuki couplings work well for 2,4-dibromothiophene, but are much more sensitive to steric effects in the case of 2,3-dibromothiophene. By using the recently reported potassium borates, though, good yields for both dibromothiophene isomers can be achieved.
Samantha, Varello, Scott T, Handy
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Swapping boron acids for carbon acids
Science, 2017Organic Chemistry Carbon-bound boronic acids and their esters are widely used as coupling partners to make carbon-carbon bonds. More recently, these chemicals have garnered pharmaceutical interest in their own right. Li et al. report a versatile nickel-catalyzed process to replace carboxylic acids with boronate esters by using a phthalimide activator ...
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Dihydropyrimidinones containing boronic acids
Canadian Journal of Chemistry, 2005The addition of formylphenylboronic acid derivatives to urea and ethyl acetoacetate proceeds in the absence of an additional Lewis acid catalyst to give the corresponding dihydropyrimidinones (Biginelli products) in good yields. Novel boron-containing dihydropyrimidinones have been investigated for their ability to act as anticancer agents against the
Johanna M Blacquiere +6 more
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Australian Journal of Chemistry, 1965
The relative rates of iodinolysis of benzene-, thiophen-2-, and thiophen-3-boronic acids at 25° were found to be 1 : 700 : 104, or for thiophen-2- and thiophen-3-boronic acid 14 : 1. These values correlate reasonably well with data on protodetrimethylsilylation, and may be satisfactorily understood in terms of current molecular orbital theory.
RD Brown, AS Buchanan, AA Humffray
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The relative rates of iodinolysis of benzene-, thiophen-2-, and thiophen-3-boronic acids at 25° were found to be 1 : 700 : 104, or for thiophen-2- and thiophen-3-boronic acid 14 : 1. These values correlate reasonably well with data on protodetrimethylsilylation, and may be satisfactorily understood in terms of current molecular orbital theory.
RD Brown, AS Buchanan, AA Humffray
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2005
Preface. List of Authors. List of Abbreviations. 1 Structure, Properties, and Preparation Of Boronic Acid Derivatives. Overview of Their Reactions and Applications (D. G. Hall). 1.1 Introduction. 1.2 Structure and Properties of Boronic Acid Derivatives. 1.3 Synthesis of Boronic Acids and their Esters. 1.4 Isolation and Characterization. 1.5 Overview of
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Preface. List of Authors. List of Abbreviations. 1 Structure, Properties, and Preparation Of Boronic Acid Derivatives. Overview of Their Reactions and Applications (D. G. Hall). 1.1 Introduction. 1.2 Structure and Properties of Boronic Acid Derivatives. 1.3 Synthesis of Boronic Acids and their Esters. 1.4 Isolation and Characterization. 1.5 Overview of
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Serum cholinesterase inhibition by boronic acid
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1984Horse serum cholinesterase (acylcholine acylhydrolase, EC 3.1.1.8) was reversibly inhibited by a variety of alkyl- and areneboronic acids with Ki values ranging from 6.2 mM (methaneboronic acid) to 3.1 microM (diphenylboric acid). Binding to the enzyme was apparently at the active center, because inhibition obeyed competitive kinetics and because ...
C W, Garner, G H, Little, J W, Pelley
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2011
Introduction: Properties, Preparation, Overview of Application Metal-Catalyzed Borylation of C-X and C-H Bonds for the Synthesis of Boronic Esters Transition-Metal Catalyzed Sila- and Diborylation of Alkenes, Allenes, and Alkynes The Contemporary Suzuki-Miyaura Reaction Rhodium and Palladium-Catalyzed Asymmetric Conjugate Additions of Organoboronic ...
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Introduction: Properties, Preparation, Overview of Application Metal-Catalyzed Borylation of C-X and C-H Bonds for the Synthesis of Boronic Esters Transition-Metal Catalyzed Sila- and Diborylation of Alkenes, Allenes, and Alkynes The Contemporary Suzuki-Miyaura Reaction Rhodium and Palladium-Catalyzed Asymmetric Conjugate Additions of Organoboronic ...
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Boronic Acids in Molecular Self‐Assembly
Chemistry – An Asian Journal, 2008AbstractThe reversibility of boronic acid and diol interaction makes it an ideal candidate for the design of self‐assembled molecular structures. Reversibility is required to ensure that the thermodynamically most stable structure is formed. Reversibility also ensures that any errors produced during the assembly process are not permanent.
Norifumi, Fujita +2 more
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Sugar complexation to silicone boronic acids
Chemical Communications, 2013A new class of surface-active compounds based on the combination of silicones and boronic acids is described. The properties of the compounds can be tuned by manipulation of both the hydrophobic (silicone size and 3D structure) and hydrophilic components (by binding different saccharides to the boronic acid).
Michael A, Brook +4 more
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