Journal ArticleDOI
Boronic Acid Accelerated Three-Component Reaction for the Synthesis of α-Sulfanyl-Substituted Indole-3-acetic Acids
TLDR
Boronic acid was used to accelerate a three-component reaction of indoles, thiols, and glyoxylic acids for the synthesis of α-sulfanyl-substituted indole-3-acetic acids.About:
This article is published in Organic Letters.The article was published on 2017-10-18. It has received 16 citations till now. The article focuses on the topics: Suzuki reaction & Carboxylic acid.read more
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Direct, Metal-free C(sp2 )-H Chalcogenation of Indoles and Imidazopyridines with Dichalcogenides Catalysed by KIO3.
Jamal Rafique,Sumbal Saba,Marcelo S. Franco,Luana Bettanin,Alex R. Schneider,Lais T. Silva,Antonio L. Braga +6 more
TL;DR: A greener protocol for the synthesis of 3-Se/S-indoles and imidazo[1,2-a]pyridines through direct C(sp2 )-H bond chalcogenation of heteroarenes with half molar equivalents of different dichalCogenides, using KIO3 as a non-toxic, easy-to-handle catalyst and a stoichiometric amount of glycerol.
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Boron‐Based Catalysts for C−C Bond‐Formation Reactions
TL;DR: This review presents recent developments of boron-based catalysts applied in the field of C-C bond-formation reactions, which are classified into four kinds on the basis of the type of Boron catalyst.
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Exploiting the Hydrogen-Bonding Capacity of Organoboronic Acids to Direct Covalent Bond Formation in the Solid State: Templation and Catalysis of the [2 + 2] Photodimerization
TL;DR: The ability of organoboronic acids to direct intermolecular [2 + 2] photodimerizations in the solid state is identified and dry grinding of the boronic acid and excess bpe reveal the acids to function as supramolecular catalysts.
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Boronic Acid Catalyzed Regioselective Aminolysis of 3,4-Epoxy Alcohols
TL;DR: In this article, a C-3 aminolysis of epoxy homoallylic alcohols has been accomplished, which was catalyzed by a commercially available boronic acid.
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Solvent and catalyst free ring expansion of indoles: a simple synthesis of highly functionalized benzazepines
TL;DR: It is described that the ring contraction of seven-membered benzazepines in the presence of KOtBu base at room temperature smoothly afforded the corresponding 3-alkenylated indole derivatives in very good yields.
References
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Selection of boron reagents for Suzuki-Miyaura coupling
TL;DR: This review analyses the seven main classes of boron reagent and evaluates the general physical and chemical properties of each class with special emphasis on the currently understood mechanisms of transmetalation.
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Catalytic amide formation from non-activated carboxylic acids and amines
TL;DR: A comprehensive overview of homogeneous and heterogeneous catalytic methods is presented, covering biocatalysts, Lewis acid catalysts based on boron and metals as well an assortment of other types of catalysts.
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