6339-93-1Relevant articles and documents
Photoinduced direct hydration of dipyridylacetylenes in acidic aqueous solution
Hao, Haijun,Li, Ya,Su, Zimu,Zhuang, Junpeng
, p. 7669 - 7672 (2020)
Photoinduced direct hydration of dipyridylacetylenes (DPAs) in acidic aqueous solution was achieved upon UV irradiation at room temperature. This is a catalyst-free reaction with moderate-to-good yields, and asymmetric dipyridylacetylenes afford the corresponding Markovnikov addition products.
Palladium-Catalyzed Direct α-C(sp3) Heteroarylation of Ketones under Microwave Irradiation
Quillen, Andrew,Nguyen, Quynh,Neiser, Matthew,Lindsay, Kara,Rosen, Alexander,Ramirez, Stephen,Costan, Stefana,Johnson, Nathan,Do, Thuy Donna,Rodriguez, Oscar,Rivera, Diego,Atesin, Abdurrahman,Ate?in, Tülay Aygan,Ma, Lili
, p. 7652 - 7663 (2019/05/22)
Heteroaryl compounds are valuable building blocks in medicinal chemistry and chemical industry. A palladium-catalyzed direct α-C(sp3) heteroarylation of ketones under microwave irradiation is developed and reported in this study. Under optimized condition
NOVEL PRECATALYST SCAFFOLDS FOR CROSS-COUPLING REACTIONS, AND METHODS OF MAKING AND USING SAME
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Page/Page column 62; 63; 64, (2016/05/02)
The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.
Design of a versatile and improved precatalyst scaffold for palladium-catalyzed cross-coupling: (η3-1-tBu-indenyl)2(μ-Cl)2Pd2
Melvin, Patrick R.,Nova, Ainara,Balcells, David,Dai, Wei,Hazari, Nilay,Hruszkewycz, Damian P.,Shah, Hemali P.,Tudge, Matthew T.
, p. 3680 - 3688 (2015/06/16)
We describe the development of (η3-1-tBu-indenyl)2(μ-Cl)2Pd2, a versatile precatalyst scaffold for Pd-catalyzed cross-coupling. Our new system is more active than commercially available (η3-cinnamyl)2(μ-Cl)2Pd2 and is compatible with a range of NHC and phosphine ligands. Precatalysts of the type (η3-1-tBu-indenyl)Pd(Cl)(L) can either be isolated through the reaction of (η3-1-tBu-indenyl)2(μ-Cl)2Pd2 with the appropriate ligand or generated in situ, which offers advantages for ligand screening. We show that the (η3-1-tBu-indenyl)2(μ-Cl)2Pd2 scaffold generates highly active systems for a number of challenging cross-coupling reactions. The reason for the improved catalytic activity of systems generated from the (η3-1-tBu-indenyl)2(μ-Cl)2Pd2 scaffold compared to (η3-cinnamyl)2(μ-Cl)2Pd2 is that inactive PdI dimers are not formed during catalysis.
Selective monoarylation of acetate esters and aryl methyl ketones using aryl chlorides
Biscoe, Mark R.,Buchwald, Stephen L.
supporting information; experimental part, p. 1773 - 1775 (2009/09/06)
Simple, efficient procedures for the monoarylation of acetate esters and aryl methyl ketones using aryl chlorides are presented. Previously, no general method was available to ensure the highly selective monoarylation of these classes of substrates using