Microwave-Assisted Suzuki Coupling Reactions with an Encapsulated Palladium Catalyst for Batch and Continuous-Flow Transformations
作者:Ian R. Baxendale、Charlotte M. Griffiths-Jones、Steven V. Ley、Geoffrey K. Tranmer
DOI:10.1002/chem.200501400
日期:2006.5.24
This article describes the design, optimisation and development of a Suzuki cross-coupling protocol mediated by an efficient palladium-encapsulated catalyst (Pd EnCat) under microwave irradiation. The methodology has been used in both batch mode for classical library preparation and in continuous-flow applications furnishing multigram quantities of material. Described is a method that uses direct focused
Heterocyclensynthesen mit MF/Al2O3-Basensystemen: 2-Arylbenzofurane and 2,3-Diarylisochinolin-1(2H)-one
作者:D. Hellwinkel、K. Göke
DOI:10.1055/s-1995-4057
日期:1995.9
Synthesis of Heterocycles with MF/Al 2 O 3 Base-Systems: 2-Arylbenzofuranes and 2,3-Diarylisoquinolin-1(2H)-ones2-Benzyloxybenzaldehydes, -acetophenones and -benzophenones substituted in the benzyl part with electron-withdrawing groups, cyclize easily to 2-arylbenzofuranes by using a standardized KF- or CsF-Al2O3 base system. An efficient one-pot synthesis for 2,3-diarylisoquinolin-1(2H)-ones is possible by reacting a variety of arene carbaldehyde anils with phthalides under the same reaction conditions.
Palladium-catalyzed tandem reaction of 2-hydroxyarylacetonitriles with sodium sulfinates: one-pot synthesis of 2-arylbenzofurans
作者:Jiuxi Chen、Jianjun Li、Weike Su
DOI:10.1039/c4ob00575a
日期:——
Palladium-catalyzed desulfinative addition and intramolecular annulation tandem reactions of 2-hydroxyarylacetonitriles with sodium sulfinates for one-pot synthesis of 2-arylbenzofurans.
Synthesis of benzofurans from terminal alkynes and iodophenols catalyzed by recyclable palladium nanoparticles supported on N,O-dual doped hierarchical porous carbon under copper- and ligand-free conditions
作者:Guijie Ji、Yanan Duan、Shaochun Zhang、Yong Yang
DOI:10.1016/j.cattod.2018.04.036
日期:2019.6
heterogeneous catalyst, consisting of Pd nanoparticlessupported on N,O-dual doped hierarchical porous carbon derived from naturally available and renewable biomass-bamboo shoots, which allows for highly efficient one-pot tandem reaction of o-iodophenols with terminalalkynes to synthesize biologically active 2-benzofuran derivatives under copper- and ligand-free conditions. The catalyst performed superior
Direct Arylation of Benzo[<i>b</i>]furan and Other Benzo-Fused Heterocycles
作者:Toan Dao-Huy、Maximilian Haider、Fabian Glatz、Michael Schnürch、Marko D. Mihovilovic
DOI:10.1002/ejoc.201403125
日期:2014.12
The directarylation of benzo[b]furan, benzo[b]thiophene, and indole has been studied by using aromatic bromides as the aryl source. The protocol employing common reagents and a Pd catalyst has led to the regioselective arylation of these heterocycles at the 2-position. A range of functional groups were tolerated, providing quick access to a variety of arylated benzo-fusedheterocycles that would be