38527-58-1Relevant articles and documents
Black phosphorus as a metal-free, visible-light-active heterogeneous photoredox catalyst for the direct C-H arylation of heteroarenes
Kalay, Erbay,Kü?ükke?eci, Hüseyin,Kilic, Haydar,Metin, ?nder
supporting information, p. 5901 - 5904 (2020/06/04)
Black phosphorus (BP) is for the first time employed as a metal-free, heterogeneous photoredox catalyst for the direct C-H arylation of heteroarenes with aryl diazonium salts. The arylated heteroarenes are obtained in moderate to good yields under visible-light illumination, and the protocol is shown to be applicable for the scale-up synthesis.
Cycloisomerization of Conjugated Allenones into Furans under Mild Conditions Catalyzed by Ligandless Au Nanoparticles
Zorba, Leandros,Kidonakis, Marios,Saridakis, Iakovos,Stratakis, Manolis
, p. 5552 - 5555 (2019/08/01)
Au nanoparticles supported on TiO2 (1 mol %) catalyze the quantitative cycloisomerization of conjugated allenones into furans under very mild conditions. The reaction rate is accelerated by adding acetic acid (1 equiv), but the acid does not participate in the protodeauration step as in the corresponding Au(III)-catalyzed transformation. The process is purely heterogeneous, allowing thus the recycling and reuse of the catalyst effectively in several runs.
Transition-Metal-Free Heterobiaryl Synthesis via Aryne Coupling
Saied, Tarak,Demangeat, Catherine,Panossian, Armen,Leroux, Frédéric R.,Fort, Yves,Comoy, Corinne
supporting information, p. 5275 - 5284 (2019/03/27)
We disclose, for the first time, an efficient route for the construction of various heterobiaryl backbones in fair to excellent yields using the Aryne coupling methodology. This study outlined the remarkable effect of external chelating ligands and salt additives on the heterocyclic partner reactivity in the aryne coupling reaction.