Gold catalysis for organic synthesis
نویسنده
چکیده
The past decade has witnessed a remarkable growth in the number of organic reactions that are catalyzed by homogeneous gold complexes. Many of the early reported reactions took advantage of the propensity of gold complexes to serve as excellent catalysts for reactions that proceed through π-activation of carbon–carbon multiple bonds. Subsequently, the reactivity paradigms available for gold complexes have proven to be almost limitless. The contributions from over 25 research groups from 13 countries underscore the growing importance of homogenous gold catalysis. More importantly, the papers in this Thematic Series highlight the remarkable breath of reactivity that can be accessed using homogenous gold complexes as catalysts; from catalysis of sigmatropic rearrangement, cycloaddition and cycloisomerization reactions, to applications in enantioselective catalysis, oxidative coupling and the total synthesis of natural products, and transformations of alkynes, allenes, alkenes and even C–H bonds. A true treasure chest of reactivity!
منابع مشابه
Gold catalysis for organic synthesis II
Many of the early examples of homogeneous gold-catalysis focused on the ability of cationic gold complexes to activate π-bonds towards attack of nucleophiles. This reactivity platform, examples of which can be found in this Thematic Series, continues to provide a fruitful basis for the discovery of important new transformations. This includes the development of a tandem or domino process that c...
متن کاملGold catalysis on immobilized substrates: a heteroannulation approach to the solid-supported synthesis of indoles.
A gold-catalyzed cyclization of immobilized 2-alkynylanilines was developed as the key step in the synthetic sequence for the preparation of 2-substituted indoles. These results demonstrate the potential of the unexplored combination of gold catalysis and solid-phase organic synthesis.
متن کاملActivation Strategies for Enhancement the Catalytic Activity of Gold Nanocatalysts
Recent advances in nanoscience have led to the development of numerous methodologiesfor controlled synthesis of mono dispersed nanoparticles and/or nanoclusters via surface stabilization by organic capping ligands. The application of these nanoparticles in catalysis and other fields often requires the removal of organic ligands. It is known that the removal of organic capping agents or or...
متن کاملGold catalysis: regio- and stereoselective total synthesis of xyloketals D and G and the related natural product alboatrin.
A new and efficient one-pot desilylation-gold-catalyzed cycloisomerization of alkynes containing a silyl-protected phenolic -OH and a free alcoholic -OH unit leads selectively to the formation of tetrahydrofuranobenzopyran ring system. This approach has been used for the regio- and stereoselective synthesis of xyloketal D, xyloketal G, and the related natural product alboatrin.
متن کاملWhen gold can do what iodine cannot do: A critical comparison
Gold catalysis has emerged as one of the most dynamic fields in organic synthesis. Only recently, more and more domino processes, for which gold pre-catalysts were found to be outstandingly effective, were paralleled by employing iodine electrophiles in place of gold compounds. This review highlights how, in certain cases, iodonium activation can match gold-catalyzed reactions to construct iden...
متن کامل