Results 131 to 140 of about 22,861 (258)
Pyridine N‐oxides serve as photoinduced HAT catalysts to convert simple aldehydes into acyl radicals catalyzed by organophotocatalysts. Reacting these intermediates with alkynes opens aldehyde‐dependent pathways to densely functionalized pyrroles, substituted cyclopentanones, and indanones.
Saranya Vadakke Poikayil Sasi +2 more
wiley +1 more source
Arylation with Bismuthonium Salts [PDF]
Organobismuth reagents have been employed as electrophilic arylating agents since the 1980s, but both their synthesis and use in arylation reactions suffer from poor atom economy.
Maggi, Lorenzo
core +2 more sources
A general C─C cross‐coupling method employing earth‐abundant organoaluminium nucleophiles is enabled by electronically highly donating and sterically demanding ylide‐substituted phosphine (YPhos) ligands under Pd catalysis. This protocol represents an organoaluminium cross‐coupling that operates with a single catalyst system across all carbon ...
Nicolas Kaiser +3 more
wiley +1 more source
Nickel‐Catalyzed Reductive Cross‐Coupling of Xanthate Esters With Aryl and Alkenyl Iodides
A nickel‐catalyzed reductive cross‐coupling of xanthate esters and aryl/alkenyl iodides is reported without the need for separate activators for the xanthate esters. The reaction utilizes a relatively low catalyst loading. Diarylmethanes with a good functional group variety can thus be synthesized indirectly from the corresponding benzylic alcohols ...
Felix Vöhringer +4 more
wiley +1 more source
Aryl–Aryl Coupling on Semiconductor Surfaces
Prauzner-Bechcicki, Jakub +2 more
openaire +2 more sources
Copper-Catalyzed Oxidative Arylation of Heteroarenes under Mild Conditions Using Dioxygen as Sole ...
许兆青 +4 more
core
The synergic action of ascorbic acid and NHC^N ligands enables Au(I) oxidation with electron‐rich aryldiazonium salts. ABSTRACT The synergistic action of ascorbic acid and NHC^N ligands enables the challenging oxidation of Au(I) with electron‐rich aryldiazonium salts in the absence of a cocatalyst and/or irradiation. EPR, NMR, and x‐ray analyses reveal
Paula G. Cárdenas‐Cárdenas +7 more
wiley +1 more source
Recent Applications of Propylene Carbonate as a Solvent in Sustainable Organic Synthesis
This review evaluates propylene carbonate (PC) as a non‐toxic green solvent in organic synthesis, highlighting its performance in key reactions including cross‐couplings, asymmetric hydrogenations, peptide synthesis and biocatalysis. Across these processes, PC delivers yields comparable to conventional and alternative green solvents.
Laura G. Aguilar‐Sanchez +1 more
wiley +1 more source
Infrared Irradiation‐Assisted Sonogashira Cross‐Coupling Reaction
The Pd‐catalyzed Sonogashira cross‐coupling was developed under sustainable conditions using IR irradiation in water and a recyclable Pd/C catalyst. The protocol promotes efficient C(sp2)─C(sp) bond formation under mild conditions with low Pd loading (1 mol%), providing good to excellent yields for various aryl iodides and terminal alkynes.
Ambra M. Fiore +4 more
wiley +1 more source
An anomeric amide‐enabled divergent aldehyde functionalization sequence provides one‐pot access to unsymmetrical ureas, carbamates, thiocarbamates, thioesters, and amides. Key to this transformation is the formation of N‐Boc‐hydroxamate intermediates, which serve as platforms for orthogonal activation via Lossen‐type rearrangements, single‐electron ...
Jasper L. Tyler +6 more
wiley +1 more source

