Results 21 to 30 of about 47,675 (279)
Ruthenium-Catalyzed Cycloaddition of Alkynes and Organic Azides
, 2016 Cp*RuCl(PPh3)2 is an effective catalyst for the regioselective “fusion” of organic azides and terminal alkynes, producing 1,5-disubstituted 1,2,3-triazoles.
Xinguo Chen (295183) +7 more
core +5 more sources
Electrochemical Hydroboration of Alkynes [PDF]
Chemistry – A European Journal, 2021 Abstract Herein we reported the electrochemical hydroboration of alkynes by using B 2 Pin 2 as the boron source. This unprecedented reaction manifold was applied to a broad range of alkynes, giving the hydroboration products in good to
Maude Aelterman +3 more
openaire +2 more sources
Beilstein Journal of Organic Chemistry, 2019 An iodine-mediated hydration reaction of alkynes serves as a green alternative to metal-catalyzed procedures. Previous work has shown that this method works well with terminal alkynes on keto-functionalized scaffolds, including 1,3-dicarbonyls and their ...
Zachary Lee +8 more
doaj +1 more source
Chemoselective Biohydrogenation of Alkenes in the Presence of Alkynes for the Homologation of 2‐Alkynals/3‐Alkyn‐2‐ones into 4‐Alkynals/Alkynols [PDF]
Advanced Synthesis & Catalysis, 2019 AbstractThe chemoselective hydrogenation of alkenes in the presence of alkynes is a very challenging transformation to achieve with traditional chemical methods. The development of an effective procedure to perform this transformation would enrich the tool‐kit available to organic chemists for the development of useful synthetic routes, and the ...
Colombo D. +6 more
openaire +3 more sources
From Amines to Alkynes – Lighting the Way [PDF]
, 2018 We present a metal-free photoredox strategy for the formation of Csp3-Csp bonds from redox-activated primary amine derivatives. The developed reaction of 2,4,6-triphenylpyridiniu salts with alkynyl tosylates, leading to functionalized alkynes , is easily
Michał, Ociepa +2 more
core +1 more source
Recent Advances in the Addition of Amide/Sulfonamide Bonds to Alkynes
Molecules, 2019 The addition of amide/sulfonamide bonds to alkynes is not only one of the most important strategies for the direct functionalization of carbon–carbon triple bonds, but also a powerful tool for the downstream transformations of amides/sulfonamides ...
Fei Zhao +5 more
doaj +1 more source
Efficient Sonogashira Coupling Reaction Catalyzed by Copper (I) Iodide in the Presence of KF/Al2O3 [PDF]
شیمی کاربردی روز, 2009 We have developed a convenient and efficient method for coupling of aryl iodides and bromides with terminal alkynes. The protocol uses CuI as catalyst, 1, 10-phenanthroline as ligand, KF/Al2O3 as base and toluene as solvent.
Rahman Hosseinzadeh +2 more
doaj +1 more source
Reactions of Tetracyclone Molybdenum Complexes with Electrophilic Alkynes: Cyclopentadienone–Alkyne Coupling and Alkyne Coordination [PDF]
Organometallics, 2017 The reactions of the complexes [Mo(CO)2(η4-C4Ph4CO)2] and [Mo(CO)3(NCMe)(η4-C4Ph4CO)] with the alkynes dimethyl acetylenedicarboxylate (DMAD; RC≡CR where R = CO2Me) and methyl propiolate (RC≡CH) have been studied. In the case of DMAD, the initial product is the green carbonyl complex [Mo(CO)(RC≡CR)(η5,σ-C4Ph4COCR═CR)] (3), in which two alkyne molecules
Adams, H. +4 more
openaire +2 more sources
The Effect of N-Donor Ligands on the Reaction of Ruthenium Hydrides with 1-Alkynes
, 2016 Neutral ruthenium hydrides Ru(CO)ClH(L)(PPh3)2 bearing one N-donor ligand react with 1-alkynes at 23 °C to yield neutral alkenyl complexes Ru(CO)Cl(CHCHR)(L)(PPh3)2.
Antonio M. Echavarren (1299936) +5 more
core +1 more source
Iron-catalyzed formation of six-membered rings from alkyne
Green Synthesis and CatalysisIron compounds, exhibiting high catalytic behavior and excellent compatibility, have been considered as low-toxic, cheap, efficient, and green catalysts for many important organic transformations.
Hui Li +7 more
doaj +1 more source